CN205065549U

CN205065549U - LED vehicle headlamp

Info

Publication number: CN205065549U
Application number: CN201520869983.2U
Authority: CN
Inventors: 焦栋青
Original assignee: Xi'an Ruilaite Automotive Technology Co Ltd
Current assignee: Xi'an Ruilaite Automotive Technology Co Ltd
Priority date: 2015-11-03
Filing date: 2015-11-03
Publication date: 2016-03-02
Anticipated expiration: 2025-11-03

Abstract

The utility model discloses a LED vehicle headlamp, including lamp housing, first lens and second lens, being provided with the focusing ring on the lamp housing, being fixed with first lens on the focusing ring, the 2nd lens fixation is on the support, and the support passes through the pillar to be installed on lamp housing bottom, is fixed with the circuit board on the lamp housing bottom, and the welding is gone up to the neat face of circuit has light screen and two sets of LED cell cube, and back welding has the red copper piece of heat conduction, and red copper piece and lamp body afterbody form a seal chamber within a definite time, the last heat abstractor that is connected with of seal chamber, and the light screen lies in between two sets of LED cell cubes. Constituteing two lens composition through first convex lens and second convex lens and penetrating the converging beam directly, cooperate the light screen formation of image of a horizontal setting, it is good not only to make light assemble, has also obtained good smooth type broken line for the optical efficiency further improves, has still realized the combination of far and near light simultaneously. And owing to set up red copper piece heat conduction structure, consequently reduced the thermal resistance of LED chip, improved the optical efficiency.

Description

A kind of LED headlight for vehicle

Technical field

The utility model relates to LED, is specifically related to a kind of LED headlight for vehicle.

Background technology

In the last few years, LED illumination was as a kind of novel green light source, and just in fast development, its advantage such as energy-saving high light-effect and environmental protection, progressively will replace conventional light source, was well verified in public way illumination at domestic lighting at present.

Automobile industry is as a huge system, its illuminator also can grow up with scientific and technological progress, current Foreign Automobile giants develop LED headlamp in throwing huge fund, and put on market at some high-end vehicle Small Amounts, but vapour LED headlight for vehicle faces some technical barriers, single-chip power is difficult to do greatly, and multi-chip combination just faces the problem that light is assembled, car light projection light type is the most important parameter of car bulb, and this directly has influence on Exploration on Train Operation Safety; In light type convergence, current employing be mostly method is reflective and special-shaped resin lens, these two kinds all undesirable in light convergence, and simple lens (xenon lamp adopt convergence) is undesirable especially for LED multi-point source, also has a stubborn problem to be exactly the heat dissipation problem of LED.

Can thermal resistance be exactly the capacity of heat transmission hindering the heat that sends of LED chip pass to rapidly cooling system, certainly more low better, thermal resistance is also the direct factor affecting LED light efficiency and power, the good thermal resistance solving chip, just may play the advantage of LED specular removal, automobile is due to its mobility and limited space, can not with very large radiator, the heat radiation even if having ready conditions, very not low thermal resistance, also LED chip can be caused overheated, and the lost of life is even burnt, and therefore wants the heat radiation of good solution LED.

Utility model content

The utility model, in order to solve the problems of the technologies described above, provide a kind of LED headlight for vehicle, reduces the thermal resistance of LED chip, improve output intensity and light efficiency rate, neither affect opponent vehicle safety, make again driver oneself have good illumination, the ingenious distance-light that realizes switches.

The utility model is achieved through the following technical solutions:

A kind of LED headlight for vehicle, comprises lamp housing, the first lens and the second lens; Lamp housing is provided with focusing ring, focusing ring is fixed with the first lens, second lens are fixed on support, support is installed on bottom lamp housing by pillar, is fixed with circuit board on bottom lamp housing, circuit board front is welded with shadow shield and two groups of LED unit bodies, the back side is welded with the red copper block of heat conduction, form a seal chamber between red copper block and lamp housing afterbody, seal chamber is connected with heat abstractor, shadow shield is between two groups of LED unit bodies.

Described circuit board front is welded with dipped beam LED chip and distance light LED chip, has been horizontally disposed with shadow shield between dipped beam LED chip and distance light LED chip, dipped beam LED chip is above shadow shield, and distance light LED chip is below shadow shield.

Described shadow shield leading edge is provided with camber line, and the light beam that dipped beam LED chip and distance light LED chip send is via the imaging of shadow shield leading edge camber line.

Described heat abstractor comprises liquid circulation water pipe and circulating water pipe, lamp housing is provided with the liquid circulation water pipe and circulating water pipe that are connected with seal chamber, the outside water pump of liquid circulation water pipe and circulating water pipe and cooling water tank.

It is the heater part of LED unit body in the middle of bottom described LED unit body, heater part both sides are equipped with electrode, heater part is directly welded on the boss of red copper block by solder side, red copper block boss is inlayed on circuit boards, electrode then with welding circuit board, the red copper block back side contacts with the recirculated cooling water in seal chamber.

Compared with prior art, the utility model has following useful technique effect:

The utility model forms double lens by the first convex lens and the second convex lens and combines direct projection converging beam, coordinate the shadow shield imaging of a horizontal setting, not only make light assemble good, also make light efficiency rate improve further, also achieve the combination of two light (distance-light) simultaneously.And due to the convergence of double lens combination direct beam, thus reduce light loss, improve output intensity.Meanwhile, due to the special-shaped shadow shield of horizontal setting, good light type broken line is therefore obtained, neither affect opponent vehicle safety, make again driver oneself have good illumination, realize cleverly distance-light switch, this to steering vehicle and opposite vehicle meeting particularly important.In addition, owing to arranging red copper block conductive structure, because this reducing the thermal resistance of LED chip, improve light efficiency rate.

Accompanying drawing explanation

The LED headlight for vehicle sectional structure schematic diagram one that Fig. 1 provides for the utility model;

The LED headlight for vehicle sectional structure schematic diagram two that Fig. 2 provides for the utility model;

LED headlight partial enlarged drawing in the LED headlight for vehicle that Fig. 3 provides for the utility model.

Wherein, 1 is lamp housing; 2 is the first lens; 3 is the second lens; 4 is support; 5 is pillar; 6 is dipped beam LED chip; 7 is shadow shield; 8 is distance light LED chip; 9 is circuit board; 10 is liquid circulation water pipe; 11 is red copper block; 12 is seal chamber; 13 is focusing ring; 14 is circulating water pipe; 15 is heater part; 16 is electrode; 17 is solder side.

Detailed description of the invention

Below in conjunction with specific embodiment, the utility model is described in further detail, described in be to explanation of the present utility model instead of restriction.

See Fig. 1 to Fig. 3, a kind of LED headlight for vehicle, comprises lamp housing 1, first lens 2 and the second lens 3, lamp housing 1 is provided with focusing ring 13, focusing ring 13 is fixed with the first lens 2, second lens 3 are fixed on support 4, support 4 is installed on bottom lamp housing 1 by pillar 5, circuit board 9 is fixed with on bottom lamp housing 1, described circuit board 9 front is welded with dipped beam LED chip 6 and distance light LED chip 8, shadow shield 7 has been horizontally disposed with between dipped beam LED chip 6 and distance light LED chip 8, dipped beam LED chip 6 is positioned at above shadow shield 7, distance light LED chip 8 is positioned at below shadow shield 7, described shadow shield 7 leading edge is provided with camber line, the light beam that dipped beam LED chip 6 and distance light LED chip 8 send is via the imaging of shadow shield 7 leading edge camber line, circuit board 9 back side is welded with the red copper block 11 of heat conduction, forms a seal chamber 12, seal chamber 12 is connected with heat abstractor between red copper block 11 and lamp housing 1 afterbody.

Wherein, described heat abstractor comprises liquid circulation water pipe 10 and circulating water pipe 14, lamp housing 1 is provided with the liquid circulation water pipe 10 and circulating water pipe 14 that are connected with seal chamber 12, liquid circulation water pipe 10 and the outside water pump of circulating water pipe 14 and cooling water tank.

Concrete, it is the heater part 15 of LED unit body in the middle of bottom described LED unit body, heater part 15 both sides are equipped with electrode 16, heater part 15 is directly welded on the boss of red copper block 11 by solder side 17, red copper block 11 boss is embedded on circuit board 9,16, electrode welds 17 with circuit board 9, and red copper block 11 back side contacts with the recirculated cooling water in seal chamber 12.

Operation principle of the present utility model:

The light beam that LED sends is via the imaging of shadow shield 7 leading edge camber line, combined by the first lens 2 and the second lens 3 and assemble LED light bundle, focus is positioned at beyond 5 meters, headlight front, obtain obvious outputting cutting linear light type, a set of high efficiency optical convergence system is formed between three, dipped beam LED chip 6 is positioned at above shadow shield 7, and distance light LED chip 8 is positioned at below shadow shield 7, completes light assemble by the camber line in shadow shield forward position.First lens 2 are fixed on focusing ring 13, focal length can be finely tuned, second lens 3 are fixed on support 4, bottom pillar 5 installation and lamp housing, the length of pillar 5 determines the distance of back focal length, the red copper block of shadow shield, LED chip, heat conduction is together welded on circuit board 9, be fixed on bottom lamp housing 1 again, red copper block 11 and lamp housing 1 afterbody form a seal chamber 12, cooling fluid is entered by liquid circulation water pipe 10, circulating water pipe 14 exports, and outside connects water circulating pump and cooling water tank, completes circulation cooling.

There is the very guarantee of low thermal resistance, LED chip just can be made to have given play to due light efficiency, therefore the heat that LED sends mainly is conducted by the middle part at the LED chip back side, red copper block directly contacts with recirculated cooling water behind, so just the thermal resistance of LED chip is dropped to minimum, than current copper base and aluminium base thermal resistance also much lower.

By entrucking test result, the large lamplight type of this LED and brightness all exceed foreign high-end vehicle xenon headlight.

It should be noted that, the type parameter index performance of the lens in foregoing description itself is not at limited range.Water circulating pump and cooling water tank and cooling fluid be not in limited range.The kind form performance brand of LED unit body is not in limited range.Light output broken line shape is different according to each national standard difference, not at limited range.

More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. a LED headlight for vehicle, is characterized in that, comprises lamp housing (1), the first lens (2) and the second lens (3), lamp housing (1) is provided with focusing ring (13), focusing ring (13) is fixed with the first lens (2), second lens (3) are fixed on support (4), support (4) is installed on lamp housing (1) bottom by pillar (5), bottom is fixed with circuit board (9) to lamp housing (1), circuit board (9) front is welded with shadow shield (7) and two groups of LED unit bodies, the back side is welded with the red copper block (11) of heat conduction, a seal chamber (12) is formed between red copper block (11) and lamp housing (1) afterbody, (12) are connected with heat abstractor to seal chamber, shadow shield (7) is between two groups of LED unit bodies.

2. LED headlight for vehicle according to claim 1, it is characterized in that, described circuit board (9) front is welded with dipped beam LED chip (6) and distance light LED chip (8), shadow shield (7) has been horizontally disposed with between dipped beam LED chip (6) and distance light LED chip (8), dipped beam LED chip (6) is positioned at shadow shield (7) top, and distance light LED chip (8) is positioned at shadow shield (7) below.

3. LED headlight for vehicle according to claim 1 and 2, it is characterized in that, described shadow shield (7) leading edge is provided with camber line, and the light beam that dipped beam LED chip (6) and distance light LED chip (8) send is via the imaging of shadow shield (7) leading edge camber line.

4. LED headlight for vehicle according to claim 1, it is characterized in that, described heat abstractor comprises liquid circulation water pipe (10) and circulating water pipe (14), lamp housing (1) is provided with the liquid circulation water pipe (10) and circulating water pipe (14) that are connected with seal chamber (12), liquid circulation water pipe (10) and circulating water pipe (14) outside water pump and cooling water tank.

5. LED headlight for vehicle according to claim 1, it is characterized in that, it is the heater part (15) of LED unit body in the middle of bottom described LED unit body, heater part (15) both sides are equipped with electrode (16), heater part (15) is directly welded on the boss of red copper block (11) by solder side (17), red copper block (11) boss is embedded on circuit board (9), electrode (16) then welds (17) with circuit board (9), red copper block (11) back side contacts with the recirculated cooling water in seal chamber (12).