CN212204382U

CN212204382U - LED automobile headlamp

Info

Publication number: CN212204382U
Application number: CN202021026899.1U
Authority: CN
Inventors: 唐焕雷
Original assignee: Yueqing Youtong Flexible Connection Co ltd
Current assignee: Yueqing Youtong Flexible Connection Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-12-22
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a LED automobile headlamp relates to the technical field of automotive lighting accessory, and its technical scheme main points include the circuit board, set up the LED lamp pearl in the circuit board both sides, it places the hole to open on the circuit board, be provided with the heat pipe that is located place hole department on the circuit board, the heat pipe with be connected with the radiator, the utility model discloses have the effect that reduces the thickness of circuit board, improves the intensity that the head-light illuminated the degree.

Description

LED automobile headlamp

Technical Field

The utility model relates to a technical field of automotive lighting accessory, more specifically say, it relates to a LED automotive headlamp.

Background

Automotive headlamps are used to illuminate roads and objects in front of an automobile. More specifically, light emitted from the LED lamp is reflected by the reflector and illuminates the front of the automobile. And the judgment standard of the intensity of the lighting degree of the automobile headlamp is as follows: a point is taken at a distance in front of the car and the illumination intensity at that point is detected. Factors influencing the intensity of the illumination degree include the illumination intensity of the LED lamp, the thickness of the circuit board where the LED lamp is located, and the like.

At the center of the prior art, a chinese patent document with an authorization publication number of CN208154371U discloses a high-efficiency heat dissipation device for a high-power LED automotive headlamp, which comprises two PCB boards, two LED lamp beads, a heat pipe, a heat sink, and the like, wherein one LED lamp bead is welded on one PCB board, and the heat pipe is located between the two PCB boards, the heat pipe has a good heat conduction performance, and can quickly conduct heat generated by the LED lamp bead to the heat sink, thereby protecting the LED lamp bead.

However, the arrangement of the LED automotive headlamp can cause the thickness of the whole circuit board to be increased, the distance between two LED lamps is increased, the intensity of the illumination degree of the automotive headlamp is reduced, and improvement is still needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a LED automobile headlamp has the effect that reduces the thickness of circuit board, improves the intensity that the head-light shines the degree.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a LED automobile headlamp, includes the circuit board, sets up the LED lamp pearl in the circuit board both sides, it places the hole to open on the circuit board, be provided with the heat pipe that is located the place hole department on the circuit board, the heat pipe with be connected with the radiator.

Through adopting above-mentioned technical scheme, the thickness of circuit board need not be limited to the heat pipe again, and the thickness that can accomplish to be less than the heat pipe of circuit board thickness, reduction circuit board thickness that can the at utmost, the spotlight effect of later stage reflector is better, has improved the intensity of head-light illumination degree.

The present invention can be further configured as follows in a preferred embodiment: and the heat pipe is welded and fixed with the circuit board.

Through adopting above-mentioned technical scheme, welded fastening's stability is strong, and adopts soldering tin welding back, and heat conductivility is strong.

The present invention can be further configured as follows in a preferred embodiment: the radiator comprises a connecting part and a plurality of radiating fins; one end of the heat pipe is fixedly connected with the connecting part, the connecting part is provided with an insertion groove, one end of the circuit board is fixedly connected in the insertion groove, and one end of each of the radiating fins is integrally connected with the connecting part.

By adopting the technical scheme, heat is conducted to the connecting part through the heat pipe, then the heat is dissipated through the radiating fin, one end of the circuit board is inserted into the insertion groove, and the circuit board stabilizing effect is achieved.

The present invention can be further configured as follows in a preferred embodiment: the heat pipe, the circuit board and the connecting part are welded and fixed.

Through adopting above-mentioned technical scheme, strengthened the relative stability between the three, still have good heat conduction effect simultaneously.

The present invention can be further configured as follows in a preferred embodiment: the radiator is an aluminum piece.

By adopting the technical scheme, the radiating device has good radiating performance.

The present invention can be further configured as follows in a preferred embodiment: the circuit board includes:

the middle layer is positioned in the middle of the circuit board;

two first insulating layers are arranged and are respectively positioned on two sides of the middle layer;

the circuit layers are provided with two LED lamp beads which are respectively and electrically connected with the two LED lamp beads so as to electrify the LED lamp beads;

and the two second insulating layers are arranged and respectively cover the two circuit layers.

Through adopting above-mentioned technical scheme, the main part only has an intermediate level, and the intermediate level plays main support effect, and two LED lamp pearls weld respectively in the both sides of same main part, when guaranteeing the support intensity of circuit board, the thickness of the reduction circuit board that can try hard to try, the intensity of the degree of lighting up of improvement head-light.

The present invention can be further configured as follows in a preferred embodiment: the intermediate layer is a copper layer.

By adopting the technical scheme, the heat pipe is easy to weld and fix with the heat pipe, and has good heat conductivity.

The present invention can be further configured as follows in a preferred embodiment: still including first protective cover and second visor, first protective cover and second visor cover respectively and bolted connection is fixed in the both sides of heat pipe.

Through adopting above-mentioned technical scheme, the setting of first visor and second visor plays the effect of protection to the heat pipe.

The present invention can be further configured as follows in a preferred embodiment: the first protective cover and the second protective cover are sleeved with connecting ring pieces.

Through adopting above-mentioned technical scheme, further strengthen the stability of first visor and second visor.

To sum up, the utility model discloses with the heat pipe welding in the place hole department of circuit board, the heat pipe does not lead to the fact the influence to the thickness of circuit board, also can not lead to the fact the influence to the interval between two LED lamp pearls, can reduce the thickness of circuit board, spotlight effect is better, improves the intensity that the head-light shines up the degree.

Drawings

Fig. 1 is a partial structural schematic diagram of the present invention;

FIG. 2 is an exploded view of the present invention with the connecting ring hidden;

fig. 3 is a schematic structural diagram of the present invention;

fig. 4 is a schematic partial position cross-sectional view of the circuit board of the present invention.

Reference numerals: 1. a circuit board; 2. LED lamp beads; 3. a heat sink; 4. placing holes; 5. a heat pipe; 6. a connecting portion; 7. a heat sink; 8. inserting the groove; 9. a first protective cover; 10. a second protective cover; 11. mounting holes; 12. a thread groove; 13. a connecting ring member; 14. an intermediate layer; 15. a first insulating layer; 16. a circuit layer; 17. a second insulating layer.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1 and 2, the LED automotive headlamp disclosed in this embodiment includes a circuit board 1, LED lamp beads 2 welded and fixed on two sides of the circuit board 1, and a heat sink 3 connected to the circuit board 1. The circuit board 1 is provided with placing holes 4 penetrating through two sides of the circuit board 1, the circuit board 1 is fixedly welded with heat pipes 5 located in the placing holes 4, and one ends, far away from the LED lamp beads 2, of the heat pipes 5 are connected with the radiator 3. The heat that LED lamp pearl 2 produced passes through heat pipe 5 and transmits 3 departments of radiator fast, and radiator 3 dispels the heat.

Referring to fig. 1, the heat sink 3 includes a connection portion 6 and a plurality of fins 7, and one ends of the plurality of fins 7 are integrally connected to the connection portion 6. An insertion groove 8 is formed in the connecting portion 6, and one end of the circuit board 1 and one end, far away from the LED lamp beads 2, of the heat pipe 5 are inserted into the insertion groove 8. The heat pipe 5, the circuit board 1 and the connecting part 6 are fixed by welding, so that the relative stability among the heat pipe, the circuit board and the connecting part is enhanced, and a good heat conduction effect is achieved. It should be mentioned that the heat sink 3 is made of aluminum, and has good heat dissipation performance.

Referring to fig. 2, the heat pipe module further includes a first protection cover 9 and a second protection cover 10, wherein the first protection cover 9 and the second protection cover 10 are respectively covered on two sides of the circuit board 1 and the heat pipe 5 and are fixed by bolts. More specifically, first visor 9 is gone up to open has mounting hole 11, and second visor 10 is gone up to open has thread groove 12, and first visor 9 closes the back with second visor 10 lid, and bolt insert behind the mounting hole 11 with thread groove 12 threaded connection, through screwing up the bolt alright realize first visor 9 and second visor 10 be connected fixedly. The arrangement of the first protection cover 9 and the second protection cover 10 protects the heat pipe 5.

Referring to fig. 2 and 3, the first protective cap 9 and the second protective cap 10 are sleeved with a connecting ring 13 to further enhance the stability of the first protective cap 9 and the second protective cap 10.

Referring to fig. 4, fig. 4 is a partial cross-sectional view of the circuit board 1, wherein the circuit board 1 includes an intermediate layer 14, two first insulating layers 15, two circuit layers 16, and two second insulating layers 17. Wherein the intermediate layer 14 is located at an intermediate position of the wiring board 1. Two first insulating layers 15 are located on either side of the intermediate layer 14. The two circuit layers 16 are respectively electrically connected with the two LED lamp beads 2 to electrify the LED lamp beads 2. The second insulating layers 17 cover the two wiring layers 16, respectively. It should be noted that after the heat pipe 5 is soldered on the circuit board 1, no conduction exists between the two circuit boards 1. The main part of circuit board 1 only has an intermediate level 14, and intermediate level 14 plays main supporting effect, and two LED lamp pearls 2 weld respectively in the both sides of same main part, when guaranteeing circuit board 1's support intensity, the thickness of shrink circuit board 1 that can be as far as possible improves the intensity that the head-light illuminated the degree. The intermediate layer 14 is made of copper, is easily welded and fixed with the heat pipe 5, and has good heat conductivity.

The main effects are as follows:

with the welding of heat pipe 5 in 4 departments of placing of circuit board 1, heat pipe 5 does not lead to the fact the influence to the thickness of circuit board 1, also can not lead to the fact the influence to the interval between two LED lamp pearls 2, the thickness of circuit board 1 need not be limited to heat pipe 5 again, the thickness that can accomplish to be less than heat pipe 5 of the thickness of circuit board 1, the thickness that can the at utmost reduces circuit board 1, the spotlight effect of later stage reflector is better, the intensity of the head-light degree of illuminating has been improved.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a LED automotive headlamp, characterized by: the LED lamp is characterized by comprising a circuit board (1) and LED lamp beads (2) arranged on two sides of the circuit board (1), wherein a placing hole (4) is formed in the circuit board (1), a heat pipe (5) located at the placing hole (4) is arranged on the circuit board (1), and the heat pipe (5) is connected with a radiator (3).

2. The LED automotive headlamp of claim 1, wherein: the heat pipe (5) is welded and fixed with the circuit board (1).

3. The LED automotive headlamp of claim 1, wherein: the radiator (3) comprises a connecting part (6) and a plurality of radiating fins (7); heat pipe (5) one end with connecting portion (6) fixed connection, it has insertion groove (8) to open on connecting portion (6), circuit board (1) one end fixed connection is in insertion groove (8), a plurality of the one end of fin (7) all is connected with connecting portion (6) an organic whole.

4. An LED vehicle headlamp according to claim 3 wherein: the heat pipe (5), the circuit board (1) and the connecting part (6) are fixed in a welding mode.

5. The LED automotive headlamp of claim 1, wherein: the radiator (3) is an aluminum piece.

6. The LED automotive headlamp of claim 1, wherein: the circuit board (1) comprises:

an intermediate layer (14) located in the middle of the wiring board (1);

two first insulating layers (15) which are arranged and are respectively positioned at two sides of the middle layer (14);

the circuit layers (16) are arranged and are respectively and electrically connected with the two LED lamp beads (2) so as to electrify the LED lamp beads (2);

and two second insulating layers (17) which are arranged and respectively cover the two circuit layers (16).

7. The LED automotive headlamp of claim 6, wherein: the intermediate layer (14) is a copper layer.

8. The LED automotive headlamp of claim 1, wherein: still including first visor (9) and second visor (10), first visor (9) and second visor (10) cover respectively in the both sides of heat pipe (5) and bolted connection is fixed.

9. An LED vehicle headlamp according to claim 8 wherein: the first protective cover (9) and the second protective cover (10) are sleeved with a connecting ring piece (13).