CN103256543A

CN103256543A - Automotive LED headlamp

Info

Publication number: CN103256543A
Application number: CN2013101565300A
Authority: CN
Inventors: 张臻; 郭炎炎
Original assignee: ZHEJIANG SHENDU LIGHTING CO Ltd
Current assignee: Guangdong Hua Bo Intellectual Property Operation Co ltd; Zhongshan ideal Lighting Co.,Ltd.
Priority date: 2013-05-02
Filing date: 2013-05-02
Publication date: 2013-08-21
Anticipated expiration: 2033-05-02
Also published as: CN103256543B

Abstract

The invention discloses an automotive LED headlamp, and belongs to the field of automotive lighting. The automotive LED headlamp comprises an LED light source part, a base and a lampshade. The lampshade comprises a reflecting cover and a light-transmitting cover. The LED light source part comprises a base board, a first light source and a second light source, wherein the first light source is arranged on the front side of the base board, the second light source is arranged on the back side of the base board, and a wire hole is formed in the center of the base board. The base comprises a metal radiator, one end of the base is fixedly arranged on the back of the base board, and the other end of the base is connected with a three-phase plug. A radiating block is connected on the bottom of the reflecting cover, a three-phase socket is arranged inside the radiating block, and the three-phase socket is connected with the three-phase plug. A reflecting mirror is arranged between the reflecting cover and the radiating block, and the reflecting mirror is arranged slantingly. The positive electrode and the negative electrode of the first light source on the front side of the base board and the positive electrode and the negative electrode of the second light source on the back side of the base board are connected to the three-phase plug through wires, and the first light source and the second light source share one negative electrode of the three-phase plug. The automotive LED headlamp has the advantages that lighting effect is high, the sizes of the light sources are small, heat is dissipated fast, the service life is long, and distance light and dipped light are switched conveniently.

Description

A kind of LED car headlamp

Technical field

The present invention relates to a kind of LED car headlamp, belong to the automotive lighting field.

Background technology

In the present automotive lighting field, car headlamp adopts Halogen lamp LED, discharge lamp etc. as light source usually, the shortcoming of this class headlamp is: the temperature of lighting in the back light chamber is very high, approximately to 130 °-160 °, the dipped beam baffle plate of its use generally will be selected resistant to elevated temperatures metal material for use, and the light source volume is big, is not easy to layout and the design of various device.

For example, traditional tungsten halogen lamp bubble, its power is 55W-100W, colour temperature is 3000K, and brightness is 900-3000LM, and light efficiency is 10-15LM/W, lighting the life-span continuously is 300-500 hour, and the shortcoming of this light source has: power is big, light efficiency is low, the life-span is short, colour temperature is single.

Again for example, the gas-discharge lamp of no filament, its power are 35W; colour temperature is 4000-12000K, and brightness is 1500-3500LM, and light efficiency is 30-60LM/W; sustainable work 3000 hours, the shortcoming of this light source has: starting current is big, startup has surge voltage, needs ballast protection.

Summary of the invention

Technical problem to be solved by this invention is to overcome the problems referred to above, and a kind of LED car headlamp is provided, its light efficiency height, and the light source volume is little, long service life, and distance light, dipped beam easy switching.

Technical scheme of the present invention is:

A kind of LED car headlamp, comprise led light source parts, fixing described led light source parts pedestal, be installed in the lampshade of led light source parts and pedestal periphery, described lampshade comprises reflection shield and is installed in the diffuser of reflection shield front end, it is characterized in that:

Described led light source parts comprise substrate, and described substrate front side is equipped with light source No. one, and the back side is equipped with light source No. two, and the center of substrate has a cable-through hole;

Described pedestal is made up of metal heat sink, and an end of pedestal is fixed on the center of substrate back, and the other end is connected with 3-phase plug;

The bottom of described reflection shield is connected with radiating block, in the described radiating block three-phase socket is set, described three-phase socket is connected with the 3-phase plug of pedestal one end, also is provided with speculum between reflection shield and the radiating block, angle between the described mirror tilt setting, itself and substrate is 30 °-75 °.

The both positive and negative polarity of light source of described substrate front side and No. two light sources at the back side is connected on the 3-phase plug by lead respectively, and light source and No. two light sources share the negative pole of 3-phase plugs.

As preferably, a described light source comprises several led chip and shell lens, and a described led chip is fixed on the front of substrate, and annular array is distributed in around the cable-through hole, described shell lens bottom is fixed on the front of substrate, and in a led chip is wrapped in.

As preferably, described No. two light sources comprise several No. two led chips and encapsulation silica gel, described No. two led chips are fixed on the back side of substrate, and annular array is distributed in around the cable-through hole, inner ring and the outer ring of No. two led chip array rings respectively are provided with reflector, and described encapsulation monolithic silica gel is wrapped in outside No. two led chips and the reflector.

As preferably, the both positive and negative polarity of light source of described substrate front side and No. two light sources at the back side is connected on the 3-phase plug by lead respectively, and light source and No. two light sources share the negative pole of 3-phase plugs.

As preferably, front portion and the bottom in the described reflection shield outside respectively are equipped with a fixed disk.

The invention has the beneficial effects as follows:

1, the led light source parts comprise led light source of front light source and No. two led light sources of back side light source, and the brightness of front light source can reach 1500LM, and power only is 15W, light efficiency can reach 100LM/W, the brightness of back side light source can reach 2000LM, and power only is 20W, and light efficiency can reach 100LM/W;

2, the both positive and negative polarity owing to front light source and back side light source is connected on the 3-phase plug, and shared negative pole, by regulating the selection output of 3-phase plug, namely can reach selectively positive luminous or back side illuminated of light source;

3, owing to the setting of reflection shield and speculum, when the light source luminescent of front, whole lamp can send the light of direct projection forward, satisfies the light demand of long-distance light; When the light source luminescent of the back side, the light that forms after the reflection of light by speculum and reflection shield presents divergent state, can satisfy the light demand of dim head lights, has realized the requirement of distance light, dipped beam easy switching thus;

4, because pedestal firmly is fixed on the led light source parts, the heat that light source produces can be derived by pedestal rapidly, has increased the service life of light source greatly.

Description of drawings

Fig. 1 is sectional structure schematic diagram of the present invention.

Fig. 2 is the sectional structure schematic diagram of lampshade among the present invention.

Fig. 3 is the sectional structure schematic diagram of led light source parts among the present invention.

Fig. 4 is the Facad structure schematic diagram of led light source parts among the present invention.

Fig. 5 is the structure schematic diagram of led light source parts among the present invention.

The specific embodiment

Now the present invention is further illustrated by reference to the accompanying drawings:

As Fig. 1-shown in Figure 5, a kind of LED car headlamp comprises led light source parts 1, pedestal 2 and lampshade 3, and led light source parts 1 are fixed on the pedestal 2, lampshade 3 is installed in the periphery of led light source parts 1 and pedestal 2, and lampshade 3 comprises reflection shield 301 and is installed in the diffuser 302 of reflection shield 301 front ends.

Led light source parts 1 comprise substrate 101, a light source and No. two light sources, and No. one light source is installed in substrate 101 fronts, and No. two light source is installed in substrate 101 back sides, and the center of substrate 101 has a cable-through hole 102.Wherein, No. one light source comprises several led chip 103 and shell lens 104, a led chip 103 is fixed on the front of substrate 101, and annular array is distributed in around the cable-through hole 102, shell lens 104 bottoms are fixed on the front of substrate 101, and in a led chip 103 is wrapped in; No. two light source comprises several No. two led chips 105 and encapsulation silica gel 106, No. two led chips 105 are fixed on the back side of substrate 101, and annular array is distributed in around the cable-through hole 102, inner ring and the outer ring of No. two led chip 105 array rings respectively are provided with reflector 107, and encapsulation silica gel 106 integral body are wrapped in outside No. two led chips 105 and the reflector 107.

Pedestal 2 is for having the metal heat sink of heat sinking function, this pedestal 2 has heat radiation and crosses the line function, one end of pedestal 2 is fixed on the center at substrate 101 back sides, the heat that light source produces can promptly be derived by pedestal 2, increased the service life of light source greatly, the other end of pedestal 2 is connected with 3-phase plug 5.The both positive and negative polarity of light source in substrate 2 fronts and No. two light sources at the back side is connected on the 3-phase plug 5 by lead respectively, and shared negative pole, lead one end is connected on the light source, and the other end passes the cable-through hole 102 at substrate 101 centers, passes pedestal 2 again and is connected on the 3-phase plug 5.By regulating the selection output of 3-phase plug 5, namely can reach selectively positive luminous or back side illuminated of light source.

The bottom of reflection shield 301 is connected with radiating block 4, in the radiating block 4 three-phase socket is set, and three-phase socket is connected with the 3-phase plug 5 of pedestal 2 one ends.In addition, also be provided with speculum 303 between reflection shield 301 and the radiating block 4, speculum 303 is obliquely installed, and the angle between itself and the substrate 101 is 30 °-75 °.The front portion in reflection shield 301 outsides and bottom also respectively are equipped with a fixed disk 6, are used for headlamp is fixedly mounted on the relevant position of vehicle body.

When the light source luminescent in front, whole lamp can send the light of direct projection forward, and light is comparatively concentrated, and brightness is bigger, can shine distant objects, satisfies the light demand of long-distance light; When No. two light source luminescents at the back side, the light that forms after the reflection of light by speculum and reflection shield presents divergent state, object in can shining nearby in a big way satisfies the light demand of dim head lights, realized the function of distance light, dipped beam easy switching thus.

Claims

1. LED car headlamp, comprise led light source parts, fixing described led light source parts pedestal, be installed in the lampshade of led light source parts and pedestal periphery, described lampshade comprises reflection shield and is installed in the diffuser of reflection shield front end, it is characterized in that:

The bottom of described reflection shield is connected with radiating block, in the described radiating block three-phase socket is set, described three-phase socket is connected with the 3-phase plug of pedestal one end, also is provided with speculum between reflection shield and the radiating block, angle between the described mirror tilt setting, itself and substrate is 30 °-75 °;

2. a kind of LED car headlamp according to claim 1, it is characterized in that: a described light source comprises several led chip and shell lens, a described led chip is fixed on the front of substrate, and annular array is distributed in around the cable-through hole, described shell lens bottom is fixed on the front of substrate, and in a led chip is wrapped in.

3. a kind of LED car headlamp according to claim 1 and 2, it is characterized in that: described No. two light sources comprise several No. two led chips and encapsulation silica gel, described No. two led chips are fixed on the back side of substrate, and annular array is distributed in around the cable-through hole, inner ring and the outer ring of No. two led chip array rings respectively are provided with reflector, and described encapsulation monolithic silica gel is wrapped in outside No. two led chips and the reflector.

4. a kind of LED car headlamp according to claim 1 is characterized in that: front portion and the bottom in the described reflection shield outside respectively are equipped with a fixed disk.