CN201434300Y

CN201434300Y - LED headlamp of vehicle

Info

Publication number: CN201434300Y
Application number: CN2009200601510U
Authority: CN
Inventors: 钟弘毅; 刘敏
Original assignee: Guangzhou Guangri Electricity Facilities Co Ltd
Current assignee: Guangzhou Guangri Electricity Facilities Co Ltd
Priority date: 2009-07-09
Filing date: 2009-07-09
Publication date: 2010-03-31
Anticipated expiration: 2019-07-09

Abstract

The utility model discloses an LED Headlamp of a vehicle, which comprises a single LED light source, a drive device used for driving the operation of the LED light source, a secondary optical part anda radiator. The secondary optical part is covered on the radiator, and the single LED light source is arranged in the optical center in the secondary optical part and also on the top surface of the radiator. With the single LED light source, the utility model has the advantages of reasonable structure and convenient assembly. With the radiator for heat dissipation, the utility model has the advantages of good effect of heat dissipation, long service life, energy conservation, environmental protection and good light distribution performance.

Description

A kind of LED car headlamp

Technical field

The utility model relates to the automobile headlamp lighting technical field, particularly relates to a kind of car headlamp that adopts single LEDs as light emitting source.

Background technology

Irradiation source before the car headlamp of prior art generally adopts Halogen lamp LED or gas-discharge lamp as automobile, above-mentioned two kinds of lamp kinds are in the process of lighting and using for a long time, can continue to external world's heat radiation heat, cause the temperature in the headlight light fixture very high, easily light fixture is caused certain negative effect, and above-mentioned two kinds of lamp kinds when using power higher, the power consumption in the automobile is more, make that the fuel consumption of automobile is very big, be unfavorable for environmental protection.

Along with LED The Application of Technology and popularization, advantages such as its low energy consumption, the life-span is long, response speed is fast, colour rendering is good replace the idea that energy consumption is big, the life-span is short, the response time is slow of conventional lamp (as tengsten lamp, fluorescent lamp) and are more and more accepted by people, most of people to LED be applied in environmental protection that automobile headlamp produces, effect such as energy-conservation weighs up, it seems for a long time, it is demands of social development that the LED technology is applied in the automobile headlamp field, and the LED lamp is that the ideal that replaces existing car headlamp conventional light source is selected.

But high-power LED lamp can be emitted a large amount of heat in the course of the work, if heat can not in time distribute, just can cause the LED die temperature to rise rapidly, the rising of temperature will cause LED components and parts changes of properties and decay, even loses efficacy; The decay of LED performance, and then reduced the light distribution effect that LED automobile headlamp secondary optics is handled, influenced the security of car steering.

Summary of the invention

The purpose of this utility model is to overcome prior art and adopts great power LED to gather too much heat easily, reduce LED service life, influence the problem of light distribution effect in the LED car headlamp light fixture, a kind of automobile headlamp that adopts single LEDs as light emitting source is provided, and through secondary optics processing, radiating treatment, satisfy the instructions for use of LED automobile headlamp performance, popularize the car headlamp of energy-saving and environmental protection type light source led as light emitting source.

For realizing above purpose, the utility model has been taked following technical scheme: a kind of LED car headlamp, comprise single LEDs light emitting source and drive drive unit, secondary optics part, the radiator of this LED light emitting source work, this secondary optics partly covers on the described radiator, and described single LEDs light emitting source is arranged on the end face of the interior photocentre place of secondary optics part, radiator.

Single LEDs light emitting source is upwards luminous after being powered by universal drive device, after light reflection is partly handled with refraction through secondary optics, effective illumination is mapped to car headlamp illumination rules and regulations zone, reach the requirement of automobile headlamp luminous intensity distribution performance, owing to only taked single LEDs light emitting source, be equipped with radiator simultaneously for its heat radiation, can have reduced the temperature in the light fixture greatly, guaranteed the service life of LED lamp.

Described radiator comprises radiator body, be laid in the blade inserting lamination of radiator body side surface, be arranged on the hot radical seat on radiator body top, and described single LEDs light emitting source is arranged on this hot radical seat.The radiator body side surface adopts laminated structure, and the hot radical seat is connected with radiator body, and the heat that produces in the time of single LEDs light emitting source can better being worked distributes.

On described hot radical seat, offer groove, also include heat pipe, it is interior and concordant with described hot radical seating face that this heat pipe one end is placed in this groove, and the other end inserts in the radiator body in described radiator body side bending back, and the bottom surface of described single LEDs light emitting source contacts with described heat pipe.Heat pipe one end is connected with the hot radical seat, and the other end is connected with radiator body, not only makes things convenient for it that hot radical seat and radiator body are fixed, and the heat that produces on the hot radical seat can be passed to fast the radiator body heat radiation; When single LEDs light emitting source is installed in hot radical seat basal plane; closely contact with heat pipe; the heat transferred surrounding medium that heat pipe can be produced the work of single LEDs light emitting source more timely; reduce the temperature in the car headlamp tool; improve the service life of light fixture; bonding LEDs light emitting source makes the LED automobile headlamp reach the requirement of lamp luminous intensity distribution performance in conjunction with the optimal design of secondary optics parts on the basis of Normal Environmental Temperature work.

Described secondary optics locates to be semi-calyciform speculum, lens and light barrier directly over partly including and being positioned at single LEDs light emitting source, described light barrier is arranged at the end of described hot radical seat, the opening part of speculum, described lens are connected with described light barrier by accessory holder, and wear for light over against the opening of speculum and to penetrate.Single LEDs light emitting source is upwards luminous after being powered by universal drive device, and is after light barrier filters veiling glare that effective light is regional to the automotive regulation regulation through lens lighting by the reflection of half cup shape mirror mirror, reaches the requirement of automobile headlamp luminous intensity distribution performance; In the utility model; lens are not directly to be connected with light barrier; it also includes an accessory holder; this accessory holder is connected on the end of hot radical seat with light barrier earlier; lens are to be assemblied on the accessory holder by the bonding form of close-fitting, and this assembling mode can effectively be protected the lens difficult drop-off.

The utility model compared with prior art, have following advantage: the utility model LED automobile headlamp has adopted single LEDs light emitting source, therefore more reasonable structure, assembling are convenient, heat radiation by radiator, make and long, the energy-conserving and environment-protective of good heat dissipation effect, life-span of this LED headlamp have luminous intensity distribution performance preferably.

Description of drawings

Fig. 1 is an overall structure schematic diagram of the present utility model;

Fig. 2 is a decomposition texture schematic diagram of the present utility model;

Fig. 3 is the combined secondary optics part-structure of a utility model schematic diagram;

Fig. 4 is a heat spreader structures schematic diagram of the present utility model;

Fig. 5 is the utility model generalized section;

The single LEDs light emitting source of description of reference numerals: 1-, 2-secondary optics part, 21-speculum, the 211-metallic channel, 22-lens, 23-light barrier, the 24-accessory holder, 3-radiator, 31-radiator body, 32-blade inserting lamination, 33-hot radical seat, 34-heat pipe, the 35-groove, the 4-drive unit, 5, connect electric wire, 6, mounting hole site.

The specific embodiment

Below in conjunction with the drawings and specific embodiments content of the present utility model is described in further details.

Embodiment:

See also Fig. 1, Fig. 2 and shown in Figure 5, a kind of LED car headlamp, include single LEDs light emitting source 1, drive unit 4, drive unit 4 is devices of a kind of driving LED work of using always, drive unit 4 is electrically connected with single LEDs light emitting source 1 by connecting electric wire 5, also include secondary optics part 2, radiator 3, this secondary optics part 2 covers on the described radiator 3, and single LEDs light emitting source 1 is arranged on the end face of photocentre place in the secondary optics part 2, radiator 3.

Please shown in Figure 4 in conjunction with consulting, radiator 3 comprises radiator body 31, be laid in the blade inserting lamination 32 of radiator body 31 sides, be arranged on the hot radical seat 33 on radiator body 31 tops, and single LEDs light emitting source 1 is arranged on this hot radical seat 33.On the basal plane of hot radical seat 33 and side is provided with a plurality of mounting hole site 6, it is used for installing single LEDs light emitting source 1, speculum 21 and lens 22 and light barrier 23, on hot radical seat 33, offer groove 35, also include heat pipe 34, it is interior and concordant with hot radical seat 33 surfaces that these heat pipe 34 1 ends are placed in this groove 35, the other end inserts in the radiator body 31 in radiator body 31 sides bending back, above-mentioned single LEDs light emitting source 1 assembles with the basal plane of hot radical seat 33, also closely contacts with heat pipe 34 simultaneously.

Please described in conjunction with consulting Fig. 3, secondary optics part 2 locates to be semi-calyciform speculum 21, lens 22 and light barrier 23 directly over including and being positioned at single LEDs light emitting source 1, light barrier 23 is arranged at the end of hot radical seat 33, the opening part of speculum 21, lens 22 are connected with light barrier 23 by accessory holder 24, and over against the opening of speculum 21.All install according to the automobile photometric standards installation site of speculum, light barrier and lens, afterbody at speculum 21 is provided with metallic channel 211, in the time of directly over speculum 21 covers on single LEDs light emitting source 1, the connection electric wire 5 of this LED light emitting source 1 is drawn by this metallic channel 211 and is electrically connected to drive unit 4.

Above-listed detailed description is at the specifying of the utility model possible embodiments, and this embodiment is not in order to limiting claim of the present utility model, does not allly break away from the equivalence that the utility model does and implements or change, all should be contained in the claim of this case.

Claims

1, a kind of LED car headlamp, it is characterized in that: comprise single LEDs light emitting source (1) and drive drive unit (4), secondary optics part (2), the radiator (3) that this LED light emitting source (1) is worked, this secondary optics part (2) covers on the described radiator (3), and described single LEDs light emitting source (1) is arranged on the end face of the interior photocentre place of secondary optics part (2), radiator (3).

2, LED car headlamp as claimed in claim 1, it is characterized in that: described radiator (3) comprises radiator body (31), be laid in the blade inserting lamination (32) of radiator body (31) side, be arranged on the hot radical seat (33) on radiator body (31) top, and described single LEDs light emitting source (1) is arranged on this hot radical seat (33).

3, LED car headlamp as claimed in claim 2, it is characterized in that: on described hot radical seat (33), offer groove (35), also include heat pipe (34), it is interior and concordant with described hot radical seat (33) surface that these heat pipe (34) one ends are placed in this groove (35), the other end inserts in the radiator body (31) in described radiator body (31) side bending back, and the bottom surface of described single LEDs light emitting source (1) contacts with described heat pipe (34).

4, LED car headlamp as claimed in claim 3, it is characterized in that: described secondary optics part (2) locates to be semi-calyciform speculum (21), lens (22) and light barrier (23) directly over including and being positioned at single LEDs light emitting source (1), described light barrier (23) is arranged at the end of described hot radical seat (33), the opening part of speculum (21), described lens (22) are connected with described light barrier (23) by accessory holder (24), and wear for light over against the opening of speculum (21) and to penetrate.