Direct insertion type LED car lamp

Abstract

The utility model discloses a direct-insertion type LED car lamp which comprises a shell, light-transmitting openings are symmetrically formed in the left side and the right side of the shell, a containing cavity is formed in the middle of the shell, a first air outlet which is communicated with the containing cavity and faces the light-transmitting openings is formed in the shell, and a second air outlet which is communicated with the containing cavity is formed in the rear end of the shell; the copper substrate is arranged in the shell in a front-back extending mode and located between the two light-transmitting openings, and the left side and the right side of the copper substrate are each provided with at least one LED light source exposed to the two light-transmitting openings; the driving plate is arranged in the accommodating cavity; the centrifugal fan is obliquely arranged in the containing cavity and located between the driving plate and the copper substrate, and the centrifugal fan and the copper substrate are electrically connected with the driving plate; the first air outlet and the second air outlet are located at the air outlet end of the centrifugal fan, and the shell is further provided with an air inlet communicated with the containing cavity and located at the air inlet end of the centrifugal fan. According to the utility model, the inclined centrifugal fan is arranged at the middle part of the shell, so that the copper substrate and the driving plate can be blown and cooled at the same time, and the cooling effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle lamps, and particularly relates to a direct plug-in LED vehicle lamp. Background Art

[0002] The direct plug-in LED vehicle lamp has the characteristics of low voltage, uniform light emission, long service life, instant lighting and the ability to emit neutral light. Compared with the halogen lamp and high-intensity discharge lamp (HID), which are the mainstream light sources of current vehicle lamps, it has relatively better advantages. With high driving safety, LEDs have been widely used in vehicle lamps.

[0003] However, the LED chips used in LED lamps generate a large amount of heat during operation. Once the temperature of the LED chips is too high, the LED chips are prone to burnout, which affects the service life of the direct plug-in LED vehicle lamp. The direct plug-in LED vehicle lamps on the market usually add a cooling fan inside the lamp to dissipate heat from the lamp.

[0004] A kind of existing direct plug-in LED vehicle lamp includes a housing. Inside the housing, there are a first cavity, a second cavity and a third cavity that are vertically and sequentially connected from top to bottom. A cooling fan is arranged in the first cavity, an LED chip assembly is arranged in the second cavity, and a power supply assembly is arranged in the third cavity. Four first air outlets arranged circumferentially are provided on the peripheral wall of the first cavity, and two second air outlets are provided on the bottom wall of the first cavity. These air outlets all blow the wind towards the external housing of the lamp and the externally exposed LED chips to dissipate heat from the outside of the lamp. Although it can achieve a certain heat dissipation effect, the heat dissipation effect is poor. In addition, the cooling fan and the power supply assembly are arranged at the front and rear ends respectively, and the connection between the two requires wiring and designing a wiring structure inside the housing, which increases the complexity of the overall structure and the processing difficulty, and is not convenient for the layout of the copper substrate in the middle part. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the existing technical defects and provide a direct plug-in LED vehicle lamp. By arranging an inclined centrifugal fan in the middle of the housing, it can simultaneously blow and dissipate heat from the copper substrates and the driving boards at the front and rear ends, improving the heat dissipation effect.

[0006] To solve the above technical problems, the utility model provides a direct plug-in LED vehicle lamp, including:

[0007] A housing, symmetric light-transmitting openings are provided on the left and right sides of the housing, a cavity is provided in the middle of the housing, a first air outlet communicating with the cavity and facing the light-transmitting opening is provided on the housing, and a plurality of second air outlets communicating with the cavity are provided at the rear end of the housing;

[0008] A copper substrate is disposed within the housing and extends longitudinally between two light-transmitting openings. At least one LED light source is provided on each of the left and right sides of the copper substrate and is exposed at the two light-transmitting openings respectively.

[0009] A driving board is disposed within the cavity and is electrically connected to the copper substrate.

[0010] A centrifugal fan is disposed obliquely within the cavity between the driving board and the copper substrate for blowing air towards the copper substrate and the driving board. The centrifugal fan is electrically connected to the driving board. The first air outlet and the second air outlet are located at the air outlet end of the centrifugal fan. A plurality of air inlets communicating with the cavity are further provided on the housing at the air inlet end of the centrifugal fan.

[0011] Further, a first plug interface is provided on the driving board. A plugging arm extending from the rear end of the copper substrate is inserted into the first plug interface. A plurality of first solder joints are provided on the surface of the driving board, and a plurality of second solder joints corresponding to the first solder joints one by one are provided on the side surface of the copper substrate for welded connection.

[0012] Further, the through-hole type LED headlight further includes a power connector located at the rear end of the housing to enclose the cavity, and the power connector is electrically connected to the driving board.

[0013] Further, three metal inserts penetrating the power connector from front to back are provided on the power connector. Three second plug interfaces are further provided on the driving board. The inner ends of the three metal inserts are respectively inserted into the three second plug interfaces and fixed by welding.

[0014] Further, two LED light sources are provided on each of the left and right sides of the copper substrate and are distributed front and back. The two LED light sources on one side are exposed in the same light-transmitting opening.

[0015] Further, a light-shielding cover is provided at the light-transmitting opening and is suspended in front of one of the LED light sources. An light-emitting opening is formed between one side of the light-shielding cover and the housing.

[0016] Further, the housing includes a left half-shell and a right half-shell fixed by screws. A cavity for accommodating the centrifugal fan and the driving board is formed between the left half-shell and the right half-shell. The copper substrate is disposed between the left half-shell and the right half-shell, and one side of the front end of the copper substrate is exposed outside the housing. A light-transmitting opening is penetrated through the front ends of the left half-shell and the right half-shell. First air outlets, second air outlets and air inlets symmetrically arranged are provided on both the left half-shell and the right half-shell.

[0017] Further, planes that are inclined front and back are provided in the middle of the left half-shell and the right half-shell. A first air outlet facing the light-transmitting opening penetrates through the rear side of the plane, and at least one first air inlet that communicates with the cavity and is located at the air inlet end of the centrifugal fan penetrates through the front side of the plane.

[0018] Further, at least one second air inlet that communicates with the cavity and is located at the air inlet end of the centrifugal fan is provided on the front side of both the left half-shell and the right half-shell, and at least one third air outlet that communicates with the cavity and is located at the air outlet end of the centrifugal fan is provided on the rear side of both the left half-shell and the right half-shell.

[0019] Further, a chuck protrudes radially on the outer periphery of the rear end of the housing. A stop ring platform also protrudes on the outer periphery of the chuck. At least one positioning ear is further formed on the outer periphery of the stop ring platform. A groove is formed between the rear end of the chuck and the housing. The second air inlet and the third air outlet are located at the front end of the chuck, and the second air outlet is located at the rear end of the chuck.

[0020] The utility model has the following beneficial effects:

[0021] In the utility model, by providing a cavity in the middle of the housing and arranging an inclined centrifugal fan in the cavity, and using the principle that the centrifugal fan blows air in all directions, it can blow towards the copper substrate at the front end and the driving board at the rear end at the same time, and the air blown towards the front and rear ends can flow out of the housing through the first air outlet and the second air outlet. After cooperating with the air inlets on the housing, the air circulation inside and outside the cavity can be realized. Moreover, the air blown out through the first air outlet can blow towards the LED light source to synchronously blow and dissipate heat from the LED light source. Therefore, the above structure improves the heat dissipation effect of the through-hole LED headlight.

[0022] Secondly, by using the first air outlet, the second air outlet, the third air outlet, the first air inlet and the second air inlet arranged at different positions on the housing, when the air circulates inside and outside the cavity, it will flow around the outer surface of the housing to form a surrounding wind, which expands the contact area between the air and the housing and further improves the heat dissipation effect.

[0023] Additional aspects and advantages of the utility model will be given in part in the following description, and these will become obvious from the following description, or can be understood through the practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the utility model, form a part of this application, and do not constitute an improper limitation to the utility model. In the drawings:

[0025] Figure 1 It is a schematic diagram of the through-hole LED headlight in the embodiment;

[0026] Figure 2 Schematic diagram of another perspective of the through-hole LED headlight in the embodiment;

[0027] Figure 3 Cross-sectional view of the through-hole LED headlight in the embodiment;

[0028] Figure 4 Schematic diagram of the through-hole LED headlight after removing the right housing in the embodiment;

[0029] Figure 5 For Figure 4 Schematic diagram of another perspective;

[0030] Figure 6 Schematic diagram of the left housing in the embodiment;

[0031] Figure 7 Schematic diagram of another perspective of the left housing in the embodiment;

[0032] Figure 8 Schematic diagram of the assembled copper substrate, drive board and power plug in the embodiment;

[0033] Figure 9 Schematic diagram of the copper substrate in the embodiment;

[0034] Figure 10 Schematic diagram of another perspective of the copper substrate in the embodiment;

[0035] Figure 11 Schematic diagram of the drive board in the embodiment;

[0036] Figure 12 Schematic diagram of another perspective of the drive board in the embodiment. Detailed implementation manners

[0037] In order to more fully understand the technical content of the present invention, the present invention will be further introduced and described below in conjunction with the drawings and specific embodiments; it should be noted that in the text, descriptions such as "first" and "second" are used to distinguish different components, etc., and do not represent a sequence, nor are "first" and "second" limited to different types.

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0039] Embodiment

[0040] AsFigures 1 to 12 As shown in the figure, the surface-mounted LED headlamp of this embodiment includes a housing composed of a left half-shell 1 and a right half-shell 2, a copper substrate 3, a centrifugal fan 4, and a driving board 5. The copper substrate 3 is clamped between the left half-shell 1 and the right half-shell 2 and extends along the front and back of the housing. At least one LED light source 31 is symmetrically arranged on both sides of the front end of the copper substrate 3. Through holes corresponding to the LED light sources 31 are provided on both the left half-shell 1 and the right half-shell 2 to expose the LED light sources 31, forming a double-sided light-emitting structure. The LED light sources 31 on the copper substrate 3 are used to form the high beam and / or low beam of the vehicle; a cavity 11 is formed between the left half-shell 1 and the right half-shell 2 to accommodate the rear end of the copper substrate 3. The driving board 5 is arranged in the cavity 11 and located at the rear end of the housing; the centrifugal fan 4 is obliquely arranged in the cavity 11 in the front-back direction and located between the driving board 5 and the copper substrate 3 to blow air towards the copper substrate at the front end and the driving board at the rear end simultaneously, with good heat dissipation effect, and the axis of the centrifugal fan coincides with the intersection line between the left half-shell and the right half-shell; the driving board 5 is electrically connected to the copper substrate 3 and the centrifugal fan respectively to control the working states of the copper substrate 3 and the centrifugal fan 5 respectively; first air outlets 12 communicating with the cavity 11 and facing the through holes 10 are provided on both the left half-shell 1 and the right half-shell 2. The air blown out through the first air outlets can blow towards the LED light sources 31 to cool the LED light sources 31 by blowing air synchronously; a plurality of second air outlets 13 communicating with the cavity 11 are provided at the rear ends of the left half-shell 1 and the right half-shell 2, so that the air blown to the rear driving board 5 can flow out through the second air outlets 13, improving the fluidity of the internal and external air. And the first air outlets 12 and the second air outlets 13 are located at the air outlet end of the centrifugal fan 4; a plurality of air inlets communicating with the cavity 11 and located at the air inlet end of the centrifugal fan 4 are provided on both the left half-shell 1 and the right half-shell 2. The cooperation between the air inlets and the air outlets can realize the air circulation flow inside and outside the cavity, and the above structure effectively improves the heat dissipation effect.

[0041] In one embodiment, as Figures 8 to 12 shown, a first socket 51 is provided on the driving board 5. A plugging arm 32 inserted into the first socket 51 is provided at the rear end of the copper substrate 3 after bypassing the centrifugal fan. A plurality of first welding points 52 are provided on the surface of the driving board 5, and a plurality of second welding points 33 corresponding to the first welding points 52 one by one are provided on the side surface of the copper substrate 3. That is, after the copper substrate 3 and the driving board 5 are plugged, the welding points on both are welded and fixed one by one to realize the connection between the two. This method of replacing wire connection simplifies the overall connection structure and is convenient for assembly.

[0042] Preferably, as Figures 8 to 12 shown, two third welding points 53 electrically connected to the centrifugal fan 4 are also provided on the driving board 5.

[0043] In one embodiment, as Figures 1 to 12As shown, the through-hole type LED headlight further includes a power connector 6 located at the rear end of the housing for closing the cavity 11. The power connector 6 is electrically connected to the driving board 5 and is used for connecting to the vehicle power supply and control signals. The power connector is preferably a three-pin plug, that is, three metal inserts 61 that are distributed in a triangle and penetrate through it from front to back are provided on the power connector 6. The three metal inserts are used for connecting to the positive and negative electrodes and the signal line of the vehicle circuit respectively. Three second jacks 54 are also provided on the driving board 5. The inner ends of the three metal inserts 61 are respectively inserted into the three second jacks 54 and fixed by welding.

[0044] In one embodiment, as Figures 11 to 12 shown, two LED light sources 31 distributed front and back are provided on both sides of the copper substrate 3. The two LED light sources 31 on one side are exposed in the same light-transmitting opening 10, and the two LED light sources 31 distributed front and back are respectively used to achieve the purpose of high beam and low beam illumination.

[0045] Preferably, as Figures 1 to 7 shown, in order to achieve low beam illumination, a light-shielding cover 21 that is suspended in front of one of the LED light sources 31 is provided at the light-transmitting opening 10. Only an outlet opening is formed between one side of the light-shielding cover 21 and the housing, so that the light-emitting direction of the blocked LED light source 31 can only face the opening direction (i.e., the outlet opening) of the light-shielding cover 21. Furthermore, by controlling the light-emitting direction and cooperating with the reflector on the vehicle, the angle of the light emitted outward is realized, and the purpose of low beam illumination is achieved.

[0046] Preferably, as Figures 1 to 7 shown, flat surfaces 22 that are inclined from the rear side to the front side are provided in the middle of the left half shell 1 and the right half shell 2. A first air outlet 12 facing the light-transmitting opening 10 is provided through the rear side of the flat surface 22, and two first air inlets 14 that are communicated with the cavity 11 and are located at the air inlet end of the centrifugal fan 4 are provided through the front side of the flat surface 22. Thus, the air blown out by the centrifugal fan towards the front end of the housing first blows out through the first air outlet 12 and then flows to the LED light source 31 to blow and dissipate heat from the LED light source 31. Then, the blown air (i.e., the wind) enters the cavity 11 through the first air inlets 14 under the suction of the centrifugal fan 4, so that an internal and external air circulation flow structure is formed on both sides of the front end of the housing.

[0047] Preferably, as Figures 1 to 7As shown in the figure, a second air inlet 15 communicating with the cavity 11 and located at the air inlet end of the centrifugal fan 4 is provided on the front side of both the left half shell 1 and the right half shell 2. The second air inlet 15 is located between the first air inlet 14 and the second air outlet 12. At least one third air outlet 16 communicating with the cavity 11 and located at the air outlet end of the centrifugal fan 4 is provided on the rear side of both the left half shell 1 and the right half shell 2. The third air outlet 16 is located between the first air outlet 12 and the second air outlet 13. At this time, the air diffused around by the centrifugal fan during operation can also flow to the rear end and the rear side of the housing through the second air outlet 13 and the third air outlet 16 and then flow out of the housing. Then, the air flowing out from the second air outlet 13 and the third air outlet 16 can enter the cavity 11 through the first air inlet 14 and the second air inlet 15. Through the layout of surrounding the front, middle and rear of multiple air outlets and air inlets, the air flowing inside and outside circulates around the outer surface of the housing, forming a surrounding wind, which expands the contact area between the air and the housing and further improves the heat dissipation effect.

[0048] In one embodiment, as Figures 1 to 3 shown, a chuck 23 is radially protruded on the outer periphery of the rear end of the housing. A stop ring platform 24 is further protruded on the outer periphery of the chuck 23. At least one positioning ear 25 is further formed on the outer periphery of the stop ring platform 24, which is convenient for positioning and assembling the LED headlight on the vehicle; a groove 26 is formed between the rear end of the chuck 23 and the housing. The second air inlet 15 and the third air outlet 16 are located at the front end of the chuck 23. The second air outlet 13 is located at the rear end of the chuck 23. A plurality of notches 27 are further recessed on the outer periphery of the stop ring platform 24 for the air flow at the front and rear ends of the chuck.

[0049] In one embodiment, one side of the front end of the copper substrate is exposed outside the housing, which is convenient for heat dissipation.

[0050] In other embodiments, the left half shell and the right half shell are fixed by a plurality of screws.

[0051] In other embodiments, the LED light source is composed of a plurality of arranged LED lamp beads.

[0052] In other embodiments, the copper substrate is the LED lamp board.

[0053] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, according to the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A direct-insert type LED headlight, characterized in that, Comprising: A housing, on the left and right sides of which there are symmetrically arranged light-transmitting openings, in the middle of which there is a cavity, on which there is a first air outlet communicating with the cavity and facing the light-transmitting opening, and at the rear end of which there are a number of second air outlets communicating with the cavity; A copper substrate, which extends front and back and is arranged inside the housing and between the two light-transmitting openings, and on the left and right sides of which there are at least one LED light source respectively exposed at the two light-transmitting openings; A driving board, arranged in the cavity, and electrically connected to the copper substrate; A centrifugal fan, obliquely arranged in the cavity and between the driving board and the copper substrate for blowing air towards the copper substrate and the driving board, and electrically connected to the driving board; the first air outlet and the second air outlet are located at the air outlet end of the centrifugal fan, and there are also a number of air inlets on the housing communicating with the cavity and located at the air inlet end of the centrifugal fan.

2. The direct-insert type LED headlamp according to claim 1, wherein, There is a first socket on the driving board, and a plugging arm extending from the rear end of the copper substrate is inserted into the first socket. There are a number of first solder joints on the surface of the driving board, and a number of second solder joints corresponding to the first solder joints one by one are welded on the side of the copper substrate.

3. The surface-mounted LED headlamp according to claim 2, wherein It also includes a power connector located at the rear end of the housing to enclose the cavity, and the power connector is electrically connected to the driving board.

4. The plug-in LED headlamp according to claim 3, wherein There are three metal inserts penetrating through the power connector from front to back, and there are also three second sockets on the driving board. The inner ends of the three metal inserts are respectively inserted into the three second sockets and fixed by welding.

5. The direct-insert type LED headlamp according to claim 4, wherein, On the left and right sides of the copper substrate, there are two LED light sources distributed front and back, and the two LED light sources on one side are exposed in the same light-transmitting opening.

6. The direct-insert LED headlamp according to claim 5, wherein At the light-transmitting opening, there is a light-shielding cover suspended in front of one of the LED light sources, and there is a light-emitting opening formed between one side of the light-shielding cover and the housing.

7. The direct-insert type LED headlamp according to any one of claims 1-6, characterized in that, The housing includes a left half-shell and a right half-shell fixed by screws. A cavity for accommodating the centrifugal fan and the driving board is formed between the left half-shell and the right half-shell. The copper substrate is arranged between the left half-shell and the right half-shell, and the front side of one end of the copper substrate is exposed outside the housing; there is a light-transmitting opening penetrating through the front ends of the left half-shell and the right half-shell, and the left half-shell and the right half-shell are both provided with symmetrically arranged first air outlets, second air outlets and air inlets.

8. The direct-insert type LED headlamp according to claim 7, wherein, In the middle of the left half-shell and the right half-shell, there are both front and back obliquely arranged planes. The first air outlet facing the light-transmitting opening penetrates through the rear side of the plane, and at least one first air inlet communicating with the cavity and located at the air inlet end of the centrifugal fan penetrates through the front side of the plane.

9. The through-hole LED headlamp according to claim 8, characterized in that, On the front sides of the left half-shell and the right half-shell, there are at least one second air inlet communicating with the cavity and located at the air inlet end of the centrifugal fan, and on the rear sides of the left half-shell and the right half-shell, there are at least one third air outlet communicating with the cavity and located at the air outlet end of the centrifugal fan.

10. The direct-insert type LED headlamp according to claim 9, characterized in that, A chuck is radially protruded on the outer periphery of the rear end of the housing. A stop ring platform is further protruded on the outer periphery of the chuck. At least one positioning ear is further formed on the outer periphery of the stop ring platform. A groove is formed between the rear end of the chuck and the housing. The second air inlet and the third air outlet are located at the front end of the chuck. The second air outlet is located at the rear end of the chuck.

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