CN109488999A - A kind of automobile LED headlight of natural cooling heat dissipation - Google Patents
A kind of automobile LED headlight of natural cooling heat dissipation Download PDFInfo
- Publication number
- CN109488999A CN109488999A CN201811651407.5A CN201811651407A CN109488999A CN 109488999 A CN109488999 A CN 109488999A CN 201811651407 A CN201811651407 A CN 201811651407A CN 109488999 A CN109488999 A CN 109488999A
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- Prior art keywords
- heat dissipation
- substrate
- shell
- connector
- heat
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A kind of automobile LED headlight of natural cooling heat dissipation, including shell, pedestal, the first connector and the second connector are fixedly connected at the top of the bottom of the shell and pedestal.This kind invention design is reasonable, the heat dissipation of automobile LED headlight is very suitable to use, by being provided with shell and substrate, and under the cooperation of heat-conducting layer, it can effectively improve heat conduction amount and heat dissipation capacity, by being provided with thermally conductive tail and thermal conductive belt, and under the cooperation of substrate, heat is passed to thermal conductive belt by thermally conductive tail by substrate, it is radiated by thermal conductive belt, it can be convenient and further radiated to LED lamp bead, by being provided with heat dissipation box heat dissipating layer, and under the cooperation of ventilation slot and ventilating duct, when inside heat transfer to heat dissipation box, high efficiency and heat radiation can be carried out by heat dissipating layer, air is entered by ventilating duct again, it is discharged out of ventilation slot, or from being aerated heat dissipation between ventilation slot, realize air force heat dissipation, effectively improve the service life of LED lamp bead, it is suitble to be widely popularized.
Description
Technical field
The present invention relates to automobile LED headlight technical field, in particular to a kind of automobile LED headlight of natural cooling heat dissipation.
Background technique
LED automobile lamp refers to that interior outer light source is all made of LED technology, is used to external and interior lighting.Exterior lighting equipment
It is related to thermoae limit and EMC problem, while there are also many complicated standards of unloading load testing.LED can be widely used in LED automobile lamp
Auto lamp builds environment inside car, is 50,000 hours with the service life, LED's is firm in structure, it is not easy to and it is affected by vibration, it used
Light output brightness will not be decreased obviously in journey.LED automobile lamp is suitable for the various illumination applications of automotive electronics, including headlight
(high beam and dipped headlight), fog lamp, taillight, brake lamp, turn signal lamp, day driving lamp, courtesy light, instrument panel lamp, board
Illuminator, vehicle door lamp, room light lamp, side-marker lamp, navigation, entertainment systems, backlight and indicator light etc., but existing automobile
LED headlight is all using fan cooling when in use, and volume is big, and installation trouble, heat dissipation effect is poor, influences headlight service life.
Summary of the invention
The main purpose of the present invention is to provide a kind of automobile LED headlights of natural cooling heat dissipation, can effectively solve to carry on the back
The problems in scape technology.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of automobile LED headlight of natural cooling heat dissipation, including shell, pedestal, the first connector and the second connector, institute
It states and is fixedly connected at the top of the bottom and pedestal of shell, through there is bolt, the inside of the shell is set for the outer surface of the shell
It is equipped with substrate, the shell and substrate pass through bolted-on, be fixedly connected with LED lamp bead, the shell at the top of the substrate
Heat-conducting layer is fixedly connected between substrate, one end of the substrate is fixedly connected through pedestal with thermally conductive tail, the thermally conductive tail
Bottom be provided with fixing groove, the outer surface of the thermally conductive tail is fixedly connected with the second connector, the one of second connector
End outer surface is provided with external screw thread, and one end of first connector is internally provided with internal screw thread, and the one of first connector
End is connect by internal screw thread with external screw thread spiral with one end of the second connector, and the other end of first connector is fixedly connected
There is heat dissipation box, the inside middle-end of the heat dissipation box is provided with ventilating duct, and the outer surface of the heat dissipation box is provided with ventilation slot, described
The bottom of heat dissipation box is fixedly connected with backplane level, and the inner wall surface of the heat dissipation box is provided with heat dissipating layer, the fixing groove it is interior
Portion is fixedly connected with one end of thermal conductive belt, and the other end of the thermal conductive belt runs through ventilating duct.
Further, the material of the shell is 6063 aircraft aluminums, and the top of the shell is hatch frame, the shell
The outer surface of body is provided with corrosion-resistant coating, and the outer surface of the shell is shiny surface.
Further, the material of the substrate is copper base, and the substrate is square structure, and the substrate is relative to shell
Body is detachable structure, and the top LED lamp bead position of the substrate is corresponding with the top opening position of shell, the substrate
Outer surface is provided with radiation aluminium column, and the radiation aluminium outer surface of column on the substrate is the polishing silver-plated structure of mirror surface.
Further, the material of the heat-conducting layer be heat-conducting silicone grease, the heat-conducting layer with a thickness of between substrate and shell
Gap, the heat-conducting layer be elongate configuration.
Further, the material of the thermal conductive belt is red copper, and gapless between the thermal conductive belt and fixing groove is described thermally conductive
Band is double-layer folding structure, and there are five the thermal conductive belt settings.
Further, the thermally conductive tail is albronze material, and the thermally conductive tail is cylindrical structure, the thermally conductive tail
Diameter is greater than the width of substrate.
Further, the heat dissipation box is O-shaped boring structure, and the heat dissipation box is integral type with the first connector
Structure, the material of the heat dissipation box are polyethylene.
Further, the material of the heat dissipating layer be nanometer thermal dispersant coatings, the heat dissipating layer with a thickness of 1mm-3.9mm.
Further, the material of the backplane level is ceramics, and the plate layer is detachable structure, institute relative to heat dissipation box
State heat dissipation box with a thickness of 1.5cm-3.2cm.
Further, the pedestal is an integral structure with the second connector, and the material of the pedestal is polyethylene.
Compared with prior art, the invention has the following beneficial effects: this kind invention designs rationally, easy to use, very
It is suitble to the heat dissipation of automobile LED headlight to use, by being provided with the compounding practice mode of shell and substrate, and in the cooperation of heat-conducting layer
Under, it can effectively improve heat conduction amount and heat dissipation capacity, by being provided with thermally conductive tail and thermal conductive belt, and under the cooperation of substrate, substrate
Heat is passed into thermal conductive belt by thermally conductive tail, is radiated by thermal conductive belt, be can be convenient and LED lamp bead is further dissipated
Heat, by being provided with heat dissipation box heat dissipating layer, and under the cooperation of ventilation slot and ventilating duct, inside heat transfer to heat dissipation box
When, high efficiency and heat radiation can be carried out by heat dissipating layer, then air is entered by ventilating duct, be discharged out of ventilation slot, or from ventilation slot
Between be aerated heat dissipation, realize air force heat dissipation, effectively improve the service life of LED lamp bead, install simple and convenient, be suitble to
It is widely popularized.
Detailed description of the invention
Fig. 1 is overall structure of the present invention.
Fig. 2 is heat dissipation box schematic cross-sectional view of the present invention.
Fig. 3 is the whole thermally conductive attachment structure schematic diagram of the present invention.
Fig. 4 is the thermally conductive tail bottom substance schematic diagram of the present invention.
Fig. 5 is heat dissipation box bottom substance schematic diagram of the present invention.
In figure: 1, shell；2, substrate；3, pedestal；4, the first connector；5, heat dissipation box；6, thermal conductive belt；7, ventilation slot；8,
Second connector；9, heat-conducting layer；10, LED lamp bead；11, heat dissipating layer；12, fixing groove；13, ventilating duct；14, external screw thread；15, interior
Screw thread；16, thermally conductive tail；17, backplane level；18, bolt.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Embodiment 1
As shown in Figure 1, a kind of automobile LED headlight of natural cooling heat dissipation, including shell 1, pedestal 3,4 and of the first connector
The bottom of second connector 8, the shell 1 is fixedly connected with the top of pedestal 3, and the outer surface of the shell 1, which is run through, bolt
18, the shell 1 is internally provided with substrate 2, and the shell 1 is bolted with substrate 2 by bolt 18, the top of the substrate 2
It is fixedly connected with LED lamp bead 10, heat-conducting layer 9 is fixedly connected between the shell 1 and substrate 2, one end of the substrate 2 is run through
Pedestal 3 is fixedly connected with thermally conductive tail 16, and the bottom of the thermally conductive tail 16 is provided with fixing groove 12, the outer surface of the thermally conductive tail 16
It is fixedly connected with the second connector 8, one end outer surface of second connector 8 is provided with external screw thread 14, first connection
First 4 one end is internally provided with internal screw thread 15, and one end of first connector 4 and one end of the second connector 8 pass through interior spiral shell
Line 15 is connect with 14 spiral of external screw thread, and the other end of first connector 4 is fixedly connected with heat dissipation box 5, the heat dissipation box 5
Internal middle-end is provided with ventilating duct 13, and the outer surface of the heat dissipation box 5 is provided with ventilation slot 7, and the bottom of the heat dissipation box 5 is fixed
It is connected with backplane level 17, the inner wall surface of the heat dissipation box 5 is provided with heat dissipating layer 11, and the inside of the fixing groove 12 is fixedly connected
There is one end of thermal conductive belt 6, the other end of the thermal conductive belt 6 runs through ventilating duct 13, and the material of the shell 1 is 6063 aviation aluminium
The top of material, the shell 1 is hatch frame, and the outer surface of the shell 1 is provided with corrosion-resistant coating, the appearance of the shell 1
Face is shiny surface, and the material of the substrate 2 is copper base, and the substrate 2 is square structure, and the substrate 2 is relative to shell 1
10 position of top LED lamp bead for detachable structure, the substrate 2 is corresponding with the top opening position of shell 1, works as LED light
It when pearl 10 is using heat is generated, is radiated first by shell 1, after-heat is transmitted to thermally conductive tail 16, heat by substrate 2
It is further radiated by the thermal conductive belt 6 that thermally conductive 16 bottom of tail connects, will be dissipated by the first connector 4 and the second connector 8
Hot box 5 is connected to thermally conductive 16 bottom of tail, can carry out high efficiency and heat radiation by the heat dissipating layer 11 inside heat dissipation box 5, then by ventilating duct
13 enter air, are discharged out of ventilation slot 7, or from heat dissipation is aerated between ventilation slot 7, realizes air force heat dissipation, have
Effect improves the service life of LED lamp bead 10.
Embodiment 2
As shown in figure 3, a kind of automobile LED headlight of natural cooling heat dissipation, including shell 1, pedestal 3,4 and of the first connector
The bottom of second connector 8, the shell 1 is fixedly connected with the top of pedestal 3, and the outer surface of the shell 1, which is run through, bolt
18, the shell 1 is internally provided with substrate 2, and the shell 1 is bolted with substrate 2 by bolt 18, the top of the substrate 2
It is fixedly connected with LED lamp bead 10, heat-conducting layer 9 is fixedly connected between the shell 1 and substrate 2, one end of the substrate 2 is run through
Pedestal 3 is fixedly connected with thermally conductive tail 16, and the bottom of the thermally conductive tail 16 is provided with fixing groove 12, the outer surface of the thermally conductive tail 16
It is fixedly connected with the second connector 8, one end outer surface of second connector 8 is provided with external screw thread 14, first connection
First 4 one end is internally provided with internal screw thread 15, and one end of first connector 4 and one end of the second connector 8 pass through interior spiral shell
Line 15 is connect with 14 spiral of external screw thread, and the other end of first connector 4 is fixedly connected with heat dissipation box 5, the heat dissipation box 5
Internal middle-end is provided with ventilating duct 13, and the outer surface of the heat dissipation box 5 is provided with ventilation slot 7, and the bottom of the heat dissipation box 5 is fixed
It is connected with backplane level 17, the inner wall surface of the heat dissipation box 5 is provided with heat dissipating layer 11, and the inside of the fixing groove 12 is fixedly connected
There is one end of thermal conductive belt 6, the other end of the thermal conductive belt 6 runs through ventilating duct 13, and the material of the thermal conductive belt 6 is red copper, described
Gapless between thermal conductive belt 6 and fixing groove 12, the thermal conductive belt 6 are double-layer folding structure, and there are five the settings of thermal conductive belt 6,
By thermal conductive belt 6 and the close blind-mate of fixing groove 12, heat conduction rate can be improved, thermal conductive belt 6 is arranged to double-layer folding knot
Structure can increase heat dissipation area, improve heat dissipation effect, and the thermally conductive tail 16 is albronze material, and the thermally conductive tail 16 is circle
Column construction, the diameter of the thermally conductive tail 16 are greater than the width of substrate 2, can by the way that thermally conductive tail 16 is used albronze material
To improve heat-conducting effect, the diameter of thermally conductive tail 16 is greater than the width of substrate 2, increases thermal conductive contact area, will be hot by substrate 2
Amount passes to thermally conductive tail 16, then transfers heat to thermal conductive belt 6 by thermally conductive tail 16, is directly radiated by thermal conductive belt 6.
Embodiment 3
As shown in Fig. 2, a kind of automobile LED headlight of natural cooling heat dissipation, including shell 1, pedestal 3,4 and of the first connector
The bottom of second connector 8, the shell 1 is fixedly connected with the top of pedestal 3, and the outer surface of the shell 1, which is run through, bolt
18, the shell 1 is internally provided with substrate 2, and the shell 1 is bolted with substrate 2 by bolt 18, the top of the substrate 2
It is fixedly connected with LED lamp bead 10, heat-conducting layer 9 is fixedly connected between the shell 1 and substrate 2, one end of the substrate 2 is run through
Pedestal 3 is fixedly connected with thermally conductive tail 16, and the bottom of the thermally conductive tail 16 is provided with fixing groove 12, the outer surface of the thermally conductive tail 16
It is fixedly connected with the second connector 8, one end outer surface of second connector 8 is provided with external screw thread 14, first connection
First 4 one end is internally provided with internal screw thread 15, and one end of first connector 4 and one end of the second connector 8 pass through interior spiral shell
Line 15 is connect with 14 spiral of external screw thread, and the other end of first connector 4 is fixedly connected with heat dissipation box 5, the heat dissipation box 5
Internal middle-end is provided with ventilating duct 13, and the outer surface of the heat dissipation box 5 is provided with ventilation slot 7, and the bottom of the heat dissipation box 5 is fixed
It is connected with backplane level 17, the inner wall surface of the heat dissipation box 5 is provided with heat dissipating layer 11, and the inside of the fixing groove 12 is fixedly connected
There is one end of thermal conductive belt 6, the other end of the thermal conductive belt 6 runs through ventilating duct 13, and the heat dissipation box 5 is O-shaped boring structure,
The heat dissipation box 5 is an integral structure with the first connector 4, and the material of the heat dissipation box 5 is polyethylene, by by heat dissipation box
5 are arranged to O-shaped, can enter in order to air, realize air force heat dissipation, and the material of the heat dissipating layer 11 is nanometer heat-radiation coating
Layer, the heat dissipating layer 11 with a thickness of 1mm-3.9mm, by the way that heat dissipating layer 11 is used nanometer thermal dispersant coatings, accelerate heat dissipation, can be with
Realize that natural cooling effect can carry out efficiently when heat is transmitted to 5 inside of heat dissipation box by thermally conductive tail 16 by heat dissipating layer 11
Heat dissipation, then air is entered by ventilating duct 13, it is discharged out of ventilation slot 7, or from heat dissipation is aerated between ventilation slot 7, realize
Air force heat dissipation, effectively improves the service life of LED lamp bead 10.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of automobile LED headlight of natural cooling heat dissipation, including shell (1), pedestal (3), the first connector (4) and second connect
Connector (8), it is characterised in that: be fixedly connected at the top of the bottom of the shell (1) and pedestal (3), the appearance of the shell (1)
Through having bolt (18), the shell (1) is internally provided with substrate (2) in face, and the shell (1) and substrate (2) pass through bolt
(18) it bolts, is fixedly connected with LED lamp bead (10) at the top of the substrate (2), it is fixed between the shell (1) and substrate (2)
It is connected with heat-conducting layer (9), one end of the substrate (2) is fixedly connected through pedestal (3) with thermally conductive tail (16), the thermally conductive tail
(16) bottom is provided with fixing groove (12), and the outer surface of the thermally conductive tail (16) is fixedly connected with the second connector (8), described
One end outer surface of second connector (8) is provided with external screw thread (14), and one end of first connector (4) is internally provided with interior
Screw thread (15), one end of first connector (4) and the one end of the second connector (8) pass through internal screw thread (15) and external screw thread
(14) spiral connects, and the other end of first connector (4) is fixedly connected with heat dissipation box (5), the inside of the heat dissipation box (5)
Middle-end is provided with ventilating duct (13), and the outer surface of the heat dissipation box (5) is provided with ventilation slot (7), the bottom of the heat dissipation box (5)
It is fixedly connected with backplane level (17), the inner wall surface of the heat dissipation box (5) is provided with heat dissipating layer (11), the fixing groove (12)
Inside is fixedly connected with one end of thermal conductive belt (6), and the other end of the thermal conductive belt (6) runs through ventilating duct (13).
2. a kind of automobile LED headlight of natural cooling heat dissipation according to claim 1, it is characterised in that: the shell (1)
Material be 6063 aircraft aluminums, the top of the shell (1) is hatch frame, and the outer surface of the shell (1) is provided with anti-
Corrosion layer, the outer surface of the shell (1) are shiny surface.
3. a kind of automobile LED headlight of natural cooling heat dissipation according to claim 1, it is characterised in that: the substrate (2)
Material be copper base, the substrate (2) is square structure, the substrate (2) relative to shell (1) be detachable structure,
Top LED lamp bead (10) position of the substrate (2) is corresponding with the top opening position of shell (1), outside the substrate (2)
Surface is provided with radiation aluminium column, and the radiation aluminium outer surface of column on the substrate (2) is the polishing silver-plated structure of mirror surface.
4. a kind of automobile LED headlight of natural cooling heat dissipation according to claim 1, it is characterised in that: the heat-conducting layer
(9) material be heat-conducting silicone grease, the heat-conducting layer (9) with a thickness of the gap between substrate (2) and shell (1), it is described thermally conductive
Layer (9) is elongate configuration.
5. a kind of automobile LED headlight of natural cooling heat dissipation according to claim 1, it is characterised in that: the thermal conductive belt
(6) material is red copper, and gapless between the thermal conductive belt (6) and fixing groove (12), the thermal conductive belt (6) is double-layer folding knot
Structure, there are five thermal conductive belt (6) settings.
6. a kind of automobile LED headlight of natural cooling heat dissipation according to claim 1, it is characterised in that: the thermally conductive tail
It (16) is albronze material, the thermally conductive tail (16) is cylindrical structure, and the diameter of the thermally conductive tail (16) is greater than substrate (2)
Width.
7. a kind of automobile LED headlight of natural cooling heat dissipation according to claim 1, it is characterised in that: the heat dissipation box
It (5) is O-shaped boring structure, the heat dissipation box (5) is an integral structure with the first connector (4), the heat dissipation box (5)
Material be polyethylene.
8. a kind of automobile LED headlight of natural cooling heat dissipation according to claim 1, it is characterised in that: the heat dissipating layer
(11) material be nanometer thermal dispersant coatings, the heat dissipating layer (11) with a thickness of 1mm-3.9mm.
9. a kind of automobile LED headlight of natural cooling heat dissipation according to claim 1, it is characterised in that: the backplane level
(17) material is ceramics, and the plate layer (17) is detachable structure, the thickness of the heat dissipation box (5) relative to heat dissipation box (5)
Degree is 1.5cm-3.2cm.
10. a kind of automobile LED headlight of natural cooling heat dissipation according to claim 1, it is characterised in that: the pedestal
(3) it is an integral structure with the second connector (8), the material of the pedestal (3) is polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811651407.5A CN109488999B (en) | 2018-12-31 | 2018-12-31 | Natural cooling radiating car LED headlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811651407.5A CN109488999B (en) | 2018-12-31 | 2018-12-31 | Natural cooling radiating car LED headlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109488999A true CN109488999A (en) | 2019-03-19 |
| CN109488999B CN109488999B (en) | 2021-09-07 |
Family
ID=65713639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811651407.5A Active CN109488999B (en) | 2018-12-31 | 2018-12-31 | Natural cooling radiating car LED headlight |
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| Country | Link |
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| CN (1) | CN109488999B (en) |
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| CN206496291U (en) * | 2017-01-16 | 2017-09-15 | 广州市睿星汽车配件有限公司 | A kind of car headlamp |
| US20180163940A1 (en) * | 2016-12-12 | 2018-06-14 | Koito Manufacturing Co., Ltd. | Vehicular headlamp |
| CN207990524U (en) * | 2018-03-15 | 2018-10-19 | 李承士 | Automobile-used solid state light source light bulb |
| CN108870314A (en) * | 2018-07-02 | 2018-11-23 | 深圳大道半导体有限公司 | Car headlight device |
| CN208139168U (en) * | 2018-04-13 | 2018-11-23 | 惠州市澳斯丁智能光电科技有限公司 | A kind of heat radiating type automobile LED headlight |
-
2018
- 2018-12-31 CN CN201811651407.5A patent/CN109488999B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205504776U (en) * | 2016-03-30 | 2016-08-24 | 广州市诺思赛光电科技有限公司 | LED car lamp with installation cover |
| CN205956993U (en) * | 2016-08-25 | 2017-02-15 | 广州阿笛隆科技有限公司 | LED (light -emitting diode) headlight |
| US20180163940A1 (en) * | 2016-12-12 | 2018-06-14 | Koito Manufacturing Co., Ltd. | Vehicular headlamp |
| CN206496291U (en) * | 2017-01-16 | 2017-09-15 | 广州市睿星汽车配件有限公司 | A kind of car headlamp |
| CN207990524U (en) * | 2018-03-15 | 2018-10-19 | 李承士 | Automobile-used solid state light source light bulb |
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| Publication number | Publication date |
|---|---|
| CN109488999B (en) | 2021-09-07 |
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