CN106594627A - LED (Light-emitting Diode) automobile light and preparation method thereof - Google Patents
LED (Light-emitting Diode) automobile light and preparation method thereof Download PDFInfo
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- CN106594627A CN106594627A CN201611261702.0A CN201611261702A CN106594627A CN 106594627 A CN106594627 A CN 106594627A CN 201611261702 A CN201611261702 A CN 201611261702A CN 106594627 A CN106594627 A CN 106594627A
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- heat
- light source
- led
- heat conduction
- car lamp
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Classifications
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- 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
- F21S45/42—Forced cooling
- F21S45/43—Forced cooling using gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
- F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
-
- 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
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention provides an LED (Light-emitting Diode) automobile light and a preparation method thereof. The automobile light comprises a metal heat pipe with a light source installation section and a heat conduction section, LED light sources arranged on the light source installation section, and a heat radiator comprising a metal radiator and a thermal conductive plastic isolator, wherein the metal radiator and the heat conduction section form thermal connection; and the thermal conductive plastic isolator covers the heat conduction section so as to separate the heat conduction section from outside air. The LED automobile light provided by the invention has the advantages of excellent heat radiation performance and long service life.
Description
Technical field
The present invention relates to a kind of LED car lamp and preparation method thereof；Wherein, the LED car lamp is used as the photograph of vehicle-mounted illuminating lamp tool
Mingguang City source.
Background technology
Compared with traditional lighting source, LED light source has low life-span length, power consumption, small volume, response is fast, design spirit
The advantages of living, control flexible.With the continuous progressive and requirements at the higher level of the people to energy saving environmental protection product of LED technology, using LED
Car light is continuously increased as the on-vehicle lamp of lighting source, and it is applied on a large scale automotive lighting and has become inexorable trend.
It is well known that because the service life and luminous efficiency of LED light source are closely related with its operating temperature, therefore heat dispersion is good
One of bad key factor for becoming restriction LED car lamp performance.
Chinese patent literature CN201210259563.3 discloses a kind of LED automobile headlamp, including：LED, located at substrate
On；Heat conduction member, is strip, and substrate is fixed on one end of heat conduction member, and heat conduction member is filled with low-boiling point liquid；Radiating
Component, including heat-dissipating cylinder and fin, heat-dissipating cylinder offers the through hole for housing heat conduction member, and heat-dissipating cylinder is away from the substrate
The surrounding of one end is fixed with fin.The LED automobile headlamp is using the low-boiling point liquid circulating transfer LED in heat conduction member
The heat of generation to rear end recycles radiating component to shed heat.
Chinese patent literature CN201520080331.0 discloses a kind of automotive LED headlamp with heat pipe heat radiation, including
Fin-shaped lamp socket, lamp panel, heat pipe and the fan installed in fin-shaped lamp socket bottom；Wherein, fin-shaped lamp socket includes multiple radiating fins,
Lamp panel is arranged on the top of fin-shaped lamp socket, is provided with a groove at the top of fin-shaped lamp socket, one end of heat pipe insert in the groove and with
Radiating fin is contacted, and the other end of heat pipe is exposed outside and to be welded with a copper base, and copper base is provided with LED light source.By fin
The combination of shape lamp socket, heat pipe and copper base, radiates to the heat that LED light source is produced.
Chinese patent literature CN201620407547.8 discloses a kind of New LED headlight, and it includes radiator, card
Seat, LED lamp panel, electric wire, electric wire is electrically connected with LED lamp panel, and LED lamp panel outside is enclosed with heat pipe, and heat pipe is overcoating to be stamped instead
Light cup, reflector is fixedly connected by deck with radiator；Radiator includes housing, fan, connection end, and wind is provided with housing
Fan, connection end is hollow cylindrical structure, and heat pipe lower end is placed in connection end, and deck is fixedly connected with connection end.As can be seen here,
The LED headlamp realizes radiating by the combination of heat pipe, radiator and fan.
Above-mentioned patent documentation discloses using the combination of heat pipe and radiator (radiating component) to realize quick heat radiating.By
Typically it is prepared from by the metal of such as copper in tube body of heat pipe, therefore its outer surface is easily aoxidized, and is particularly in height
During warm radiating state.Tube surface oxidation can cause it to significantly increase with the thermal resistance between radiator (radiating component), and then make
The heat dispersion rapid decrease of LED car lamp is obtained, the service life and stability of LED car lamp is had a strong impact on.However, above-mentioned patent text
Do not recognize that heat pipe outer surface aoxidizes brought heat dispersion rapid decrease problem in offering.
The content of the invention
For the deficiencies in the prior art, the first object of the present invention is to provide one kind and can in a long time keep good heat radiating
The LED car lamp of performance.
It is a further object of the present invention to provide a kind of preparation method of above-mentioned LED car lamp.
In order to realize the first object of the present invention, a first aspect of the present invention provides a kind of LED car lamp, and it includes：
Metal heat pipe, with light source construction section and heat conduction section；
LED light source, is arranged on light source construction section；
Radiator, including metallic heat dissipating part and heat-conducting plastic slider；Wherein, metallic heat dissipating part forms heat even with heat conduction section
Connect, heat-conducting plastic slider cladding heat conduction section, to intercept the contact between heat conduction section and extraneous air.
Usually, the main component of heat-conducting plastic generally includes matrix material and filler；Wherein, matrix material can be adopted
PPS, PA6/PA66, LCP, TPE, PC, PP, PPA, PEEK etc., filler can be using graphite, fibrous high heat conduction carbon dust, scale
Shape high heat conduction carbon dust, AlN powder, SiC powder, Al2O3Powder etc..In the present invention, existing any heat-conducting plastic can be adopted.
For example, the heat-conducting plastic of heat conductivity >=5W/m.k can be adopted；It is preferred that using heat conductivity >=10W/m.k, more preferably
Using the heat-conducting plastic of heat conductivity >=20W/m.k.
In above-mentioned technical proposal, the contact between heat conduction section and extraneous air is intercepted by heat-conducting plastic slider, with
Prevent from or reduce heat pipe for thermal conductivity section outer surface to aoxidize so that remain good heat between heat conduction section and metallic heat dissipating part
Connection such that it is able to keep the excellent heat dispersion performance of LED car lamp in a long time.Simultaneously as heat-conducting plastic slider sheet
Body also has preferable heat conductivility, therefore itself can simultaneously play a part of radiator, so as to the radiating to LED car lamp
Play potentiation.
In addition, for body is for the heat pipe of copper, it generally has certain flexibility, is susceptible under external force
Deformation.In above-mentioned technical proposal, heat-conducting plastic slider cladding heat conduction section, additionally it is possible to which opposite heat tube plays mechanical protection effect, prevents
Only the position of LED light source is caused to change because heat pipe for thermal conductivity section is deformed upon under external force, to guarantee to work as LED cars
When lamp is assembled to light fixture, LED light source is in correct installation site.
A kind of specific embodiment of the invention a, part for heat conduction section is wound in and is formed in metallic heat dissipating part appearance
The helicla flute in face, heat-conducting plastic slider is set to coated metal radiator.In this specific embodiment, coated metal radiating
The heat-conducting plastic slider of body can play main radiating to use such that it is able to mitigate the weight of radiator and LED car lamp.
In above-mentioned technical proposal, a part for heat conduction section is wound in the helicla flute for being formed in heat dissipation metal external surface, this
Sample is advantageous in that the contact area that can increase between metallic heat dissipating part and heat conduction section, reduces thermal resistance therebetween, so as to enter
One step strengthens the heat dispersion of LED car lamp.In addition, so can also be directly by the use of metallic heat dissipating part as the bending die of heat pipe
Tool, solves release problems when heat pipe bends so that the preparation technology of LED car lamp is simplified.
Used as a kind of preferred implementation of the present invention, metallic heat dissipating part is formed with inner air convection passage, heat-conducting plastic
Slider is formed with the outer air convection channel being connected with inner air convection passage, so that metallic heat dissipating part and heat-conducting plastic
Slider rapidly carries out heat convection with air.
Used as another preferred implementation of the present invention, heat-conducting plastic slider includes that being formed in the multiple of its outer surface dissipates
Hot fin, and heat-conducting plastic isolation is provided with vivo radiator fan, so as to further enhance the heat dispersion of LED car lamp.
Another specific embodiment of the invention, metallic heat dissipating part includes that multi-disc is laminated and spaced metal dissipates
Backing, at least a portion of heat conduction section is inserted in the central through hole of metallic heat dissipating part；The central through hole and metal fin phase
It is mutually vertical, and the gap between heat conduction slider filling heat conduction section and central through hole.
In above-mentioned technical proposal, stacking and interval setting between multi-disc metal fin so that metallic heat dissipating part has non-
Often big area of dissipation, can be fully contacted with air and carry out quick heat radiating.In addition, heat conduction slider filling heat conduction section is with
Gap between heart through hole, can effectively reduce the thermal resistance between metallic heat dissipating part and heat conduction section, so that shape therebetween
Into more preferably thermally coupled.
Preferably, LED car lamp also includes being arranged on the radiator fan of metallic heat dissipating part sidepiece, and the radiator fan dissipates with metal
Backing is arranged mutual vertically.It is such to be advantageous in that, in the space that cooling air-flow can be between metal fin fully and
Rapidly flow, to take away heat rapidly.
In the LED car lamp of the present invention, light source construction section can have one or more light source mounting surfaces.For example, light
Source construction section has two and is oppositely arranged and towards contrary light source mounting surface, on two light source mounting surfaces LED light is provided with
Source, to realize that the wide-angle of LED car lamp goes out light.
Yet another embodiment of the invention, heat-conducting plastic slider has deck installation portion, deck installation portion
On be arranged with deck for being installed to LED car lamp on light fixture.
Still another embodiment of the invention, heat-conducting plastic isolation is provided with vivo what is electrically connected with LED light source
Drive circuit board, the drive circuit board receives foreign current and foreign current is converted to the low pressure for being suitable for LED light source work
Electric current.Drive circuit board is arranged on into heat-conducting plastic isolation in vivo, the miniaturization of LED car lamp is not only contributed to and is simplified its knot
Structure, but also drive circuit board can be played a protective role using heat-conducting plastic slider.
In order to realize another object of the present invention, another aspect provides and a kind of prepare above-mentioned LED car lamp
Method, comprises the steps：
Metal heat pipe is provided, the metal heat pipe has light source construction section and heat conduction section；
LED light source is installed on light source construction section；
Metal heat pipe is assembled on metallic heat dissipating part so that heat conduction section forms heat conduction and is connected with metallic heat dissipating part；
The heat-conducting plastic slider of cladding heat conduction section is formed using mold injection, with intercept heat conduction section and extraneous air it
Between contact.
In above-mentioned technical proposal, the heat-conducting plastic slider of cladding heat conduction section is formed using mold injection, so that
Heat-conducting plastic slider can be between filler metal radiator and heat conduction section gap.Due to the heat conduction system of heat-conducting plastic slider
Number is much larger than the heat conductivity of air, therefore the gap filling heat-conducting plastic isolation physical ability between metallic heat dissipating part and heat conduction section
Enough thermal resistances for reducing therebetween, so that forming more preferably thermally coupled between metallic heat dissipating part and heat conduction section.
In order to more clearly illustrate the objects, technical solutions and advantages of the present invention, below in conjunction with the accompanying drawings and specific embodiment party
The present invention is described in further detail for formula.
Description of the drawings
Fig. 1 is the axonometric chart of LED car lamp embodiment 1 of the present invention；
Fig. 2 is the structure decomposition figure of LED car lamp embodiment 1 of the present invention；
Fig. 3 is assembling assumption diagram of the LED car lamp embodiment 1 of the present invention before injection；
Fig. 4 is the axonometric chart of LED car lamp embodiment 2 of the present invention；
Fig. 5 is the structure decomposition figure of LED car lamp embodiment 2 of the present invention；
Fig. 6 is the structure chart of metallic heat dissipating part in LED car lamp embodiment 2 of the present invention；
Fig. 7 is assembling assumption diagram of the LED car lamp embodiment 2 of the present invention before injection；
Fig. 8 is another assembling assumption diagram of the LED car lamp embodiment 2 of the present invention before injection；
Fig. 9 is the structure chart that heat-conducting plastic isolates body portion in LED car lamp embodiment 2 of the present invention；
Figure 10 is the axonometric chart of LED car lamp embodiment 3 of the present invention.
Specific embodiment
Embodiment 1
Fig. 1 to 3 shows the structure of the LED car lamp as the embodiment of the present invention 1.Referring to shown in Fig. 1 and 2, the LED car lamp
With the metal heat pipe 10 including light source construction section 11 and heat conduction section 12；Wherein, it is arranged with cylindricality cap on light source construction section 11
112, and light source construction section 11 have two be oppositely arranged and towards contrary light source mounting surface 111, two light source mounting surfaces 111
On be provided with the LED light source 20 for exposing to cap 112.LED light source 20 includes the heat conduction base being welded on light source mounting surface 111
The LED light-emitting component 22 of plate 21 and the multiple such as LED lamp beads or LED chip that are arranged on heat-conducting substrate 21.In the present embodiment,
Heat-conducting substrate 21 is ceramic base circuit board；Easy to understand, heat-conducting substrate can also be other circuit boards such as metal-based circuit board.
Wherein, LED light-emitting component 22 includes the first LED light-emitting component 221 and the second LED light-emitting component 222.First LED
Light-emitting component 221 is configured to be engaged with reflective member 23, and reflective member 23 is formed as with vertical similar to bowl-shape three-dimensional
Body structure, with control the first LED light-emitting component 221 optical range and angle are gone out.For example, the first LED light-emitting component 221 is sent
Light can be reflected by reflective member 23, so as to provide dipped beam for on-vehicle lamp；Second LED light-emitting component 222 can be used
In providing distance light for on-vehicle lamp.Although first LED light-emitting component 221 being illustrate only in figure and the 2nd LED lighting
Element 222, it is understood that the first LED light-emitting component 221 and/or the second LED light-emitting component 222 can also be multiple.
As shown in Figures 1 to 3, radiator 30 includes metallic heat dissipating part 31 and heat-conducting plastic slider 32.Metallic heat dissipating part 31
It is formed as a generally cylindrical, its outer surface is formed with helicla flute 311, is centrally formed with inner air convection passage 312；Heat conduction section 12
A part be wound in helicla flute 311, to interfix with metallic heat dissipating part 31 and form thermally coupled.Heat-conducting plastic slider 32
It is set to coated metal radiator 31 and coats heat conduction section 12, intercepts the contact between heat conduction section 12 and extraneous air.This reality
In applying example, heat-conducting plastic slider 32 can play main thermolysis.
Referring to Fig. 1 and 2, heat-conducting plastic slider 32 includes being formed in its outer surface and perpendicular to many of light source construction section 11
Individual radiating fin 321, and it is formed with the outer air convection channel (invisible in figure) being connected with inner air convection passage 312.
Wherein, radiator fan 40 is arranged at the inner chamber 322 of heat-conducting plastic slider 32, and the wind of hollow out is provided with the opening of inner chamber 322
Fan cover lid 41.In addition, heat-conducting plastic slider 32 also has deck installation portion 323, it is arranged with deck installation portion 323 for inciting somebody to action
LED car lamp is installed to the deck 50 on light fixture.
LED car lamp also includes the drive circuit board 60 being arranged in heat-conducting plastic slider 32, and drive circuit board 60 is distinguished
Electrically connect with LED light source 20 and outer lead 70, receive foreign current and foreign current is converted to is suitable for the work of LED light source 20
The low-tension current of work.
The preparation method of LED car lamp comprises the steps in embodiment 1：A part for heat conduction section 12 is twisted and is dissipated in metal
The helicla flute 311 of hot body 31 so that heat pipe 10 interfixes with metallic heat dissipating part 31；To be driven using means such as bonding, welding
Circuit board 60 is fixed in the heat conduction section 12 of heat pipe 10；Then, assembly as illustrated in FIG. 3 is placed in injection mold,
Heat-conducting plastic slider 32 is formed using mold injection, and is caused the cladding heat conduction of heat-conducting plastic slider 32 section 12 and is driven electricity
Road plate 60, while the gap between filler metal radiator 31 and heat conduction section 12.It should be readily apparent to one skilled in the art that LED cars
The assembling of lamp miscellaneous part can be carried out by the means known by those skilled in the art, therefore be will not be described here.
Embodiment 2
Fig. 4 to 9 shows the structure of the LED car lamp as the embodiment of the present invention 2.Referring to shown in Fig. 4 to 9, the LED car lamp
With the metal heat pipe 100 including light source construction section 101 and heat conduction section 102；Wherein, it is arranged with cylindricality on light source construction section 101
Cap 103, and light source construction section 101 there are two to be oppositely arranged and towards contrary light source mounting surface 1011, two light source peaces
The LED light source 120 for exposing to cap 103 is provided with dress face 1011.LED light source 120 includes being welded on light source mounting surface
Heat-conducting substrate 121 on 1011 and the reflective member 123 being arranged on heat-conducting substrate 121 and multiple LED light-emitting components 122.
Radiator 130 includes metallic heat dissipating part 131 and heat-conducting plastic slider 132.Metallic heat dissipating part 131 includes multi-slice
Folded and spaced metal fin 1311, at least a portion of heat conduction section 102 is inserted in the center of metallic heat dissipating part 131 and leads to
In hole 1312；Central through hole 1312 is mutually perpendicular to metal fin 1311.Positioned at the convex slot of the sidepiece of metallic heat dissipating part 131
Radiator fan 140 is provided with 1314, radiator fan 140 is arranged mutual vertically with metal fin 1311, and by hollow out
Fan cover 141 is covered.
Heat-conducting plastic slider 132 is set to coat heat conduction section 102, to intercept between heat conduction section 102 and extraneous air
Contact.With reference to shown in Fig. 4 and 9, heat-conducting plastic slider 132 includes base portion 1321, pars intermedia 1322 and deck installation portion
1323；Wherein, base portion 1321 is formed in side of the metallic heat dissipating part 131 away from LED light source 120；Pars intermedia 1322 and metal
Mutually it is embedded between radiator 131, to coat the part that heat conduction section 102 is plugged in central through hole 1312；Deck installation portion
1323 are formed in metallic heat dissipating part 131 is arranged with for by LED cars on the side of LED light source 120, deck installation portion 1323
Lamp is installed to the deck 150 on light fixture.
LED car lamp also includes the drive circuit board 160 being arranged in heat-conducting plastic slider 132,160 points of drive circuit board
Do not electrically connect with LED light source 120 and outer lead 170, receive foreign current and foreign current is converted to is suitable for LED light source
The low-tension current of 120 work.
Fig. 6 is the structure chart of metallic heat dissipating part 131, and Fig. 7 and 8 is package assembly of the present embodiment LED car lamp before injection
Figure.The preparation method of LED car lamp in embodiment 2 is described with reference to Fig. 6 to 8, and the structure to radiator 130 makees further
Describe in detail.
Referring to shown in Fig. 6-8, before injection, first the center that a part for heat conduction section 102 is inserted in metallic heat dissipating part is led to
In hole 1312, and heat pipe 100 and metallic heat dissipating part are caused using the interference fit between heat conduction section 102 and central through hole 1312
131 interfix, then the drive circuit board 160 electrically connected with LED light source 120 and outer lead 170 is placed to into convex slot
In 1314 and it is made near heat conduction section 102；Then, detachable piece moulding inlaying is installed between metal fin 1311 (in figure
It is not shown), piece moulding inlaying is used to limit the profile of the pars intermedia 1322 of heat-conducting plastic slider 132 in injection moulding process；Then,
In again assembly (piece moulding inlaying not shown in figure) as shown in FIG. 7 and 8 being placed into into injection mold, the shape using mold injection
Into heat-conducting plastic slider 132, and cause the cladding heat conduction of heat-conducting plastic slider 132 section 102 and drive circuit board 160.Injection
After completing, piece moulding inlaying is taken out.
As shown in Figures 6 and 7, metallic heat dissipating part 131 is formed with two symmetrical point at it near the position of central through hole 1312
Cloth and through the fluid passage 1313 of metallic heat dissipating part 131, plastic liquid can be flowed by fluid passage 1313 during injection, from
And fill the receiving space limited by piece moulding inlaying and form pars intermedia 1322, it means that plastic liquid can fill heat conduction section
Gap between 102 and central through hole 1312 (namely and metallic heat dissipating part 131 between) is (although heat conduction Duan102He centers are logical
Form interference fit between hole 1312, but because of central through hole 1312 and irregular complete cylindrical hole, therefore heat conduction Duan102He centers
Gap presence is had between through hole 1312) and coat the part that heat conduction section 102 is inserted in central through hole 1312.Meanwhile, heat conduction section
102 base portions 1321 and deck installation portion 1323 of the part by heat-conducting plastic slider 132 for not being inserted in central through hole 1312
Coated.Certainly, due to the restriction of plastic liquid mobility, the gap between heat conduction section 102 and central through hole 1312 is probably
It is partially filled with.
As shown in figure 9, the heat-conducting plastic slider 132 formed after injection wraps up whole heat conduction section 102, to intercept heat conduction
Contact between body and extraneous air.It should be noted that the pars intermedia 1322 and metallic heat dissipating part of heat-conducting plastic slider 132
Mutually it is embedded between 131, but mid portion 1322 is not filled up completely with the whole space between metal fin 1311.For
For the sake of simplicity, the structure of pars intermedia 1322 is shown schematically only expressed in Fig. 9, and omit and metallic heat dissipating part 131 is shown.
It should be readily apparent to one skilled in the art that the assembling of LED car lamp miscellaneous part can pass through this area in the present embodiment
Means known by technical staff are carried out, therefore be will not be described here.In addition, the part that the present embodiment is not described in detail is referred to
Embodiment 1.
In the other embodiment of the present invention, the cap being set on light source construction section can be formed in mold injection；
That is, heat-conducting plastic slider and cap can be formed as one by mold injection, to simplify the preparation stream of LED car lamp
Journey and cost.In addition, injection formed cap can be better protected from or reduces coated by it heat pipe outer surface generation oxygen
Change.
Embodiment 3
Figure 10 is the axonometric chart of LED car lamp embodiment 3 of the present invention.As shown in Figure 10, the difference of the present embodiment and embodiment 2
Essentially consist in：The LED car lamp of the present embodiment does not include radiator fan.
Although depicting the present invention above by preferred embodiment, but it is to be understood that, those of ordinary skill in the art
In the invention scope without departing from the present invention, all equal improvement made according to the present invention should be the invention scope institute of the present invention
Cover.
Claims (10)
1. a kind of LED car lamp, including：
Metal heat pipe, with light source construction section and heat conduction section；
LED light source, is arranged on described light source construction section；
Radiator, including metallic heat dissipating part and heat-conducting plastic slider；Wherein, the metallic heat dissipating part is formed with the heat conduction section
Thermally coupled, the heat-conducting plastic slider coats the heat conduction section, to intercept the contact between the heat conduction section and extraneous air.
2. LED car lamp as claimed in claim 1, wherein, a part for the heat conduction section is wound in and is formed in the metal and dissipates
The helicla flute of hot external surface, the heat-conducting plastic slider is set to wrap up the metallic heat dissipating part.
3. LED car lamp as claimed in claim 2, wherein, the metallic heat dissipating part is formed with inner air convection passage, described to lead
Thermoplastic materialss slider is formed with the outer air convection channel being connected with the inner air convection passage.
4. LED car lamp as claimed in claim 2, wherein, the heat-conducting plastic slider includes being formed in many of its outer surface
Individual radiating fin, and heat-conducting plastic isolation is provided with vivo radiator fan.
5. LED car lamp as claimed in claim 1, wherein, the metallic heat dissipating part includes that multi-disc is laminated and spaced gold
Category fin, at least a portion of the heat conduction section is inserted in the central through hole of the metallic heat dissipating part；The central through hole
It is mutually perpendicular to the metal fin, and between the heat conduction slider is filled between the heat conduction section and the central through hole
Gap.
6. LED car lamp as claimed in claim 5, described also including the radiator fan for being arranged on the metallic heat dissipating part sidepiece
Radiator fan is arranged mutual vertically with the metal fin.
7. LED car lamp as claimed in claim 1, wherein, the light source construction section there are two to be oppositely arranged and towards contrary
Light source mounting surface, be provided with LED light source on two light source mounting surfaces.
8. LED car lamp as claimed in claim 1, wherein, the heat-conducting plastic slider has deck installation portion, the deck
The deck for being installed to the LED car lamp on light fixture is arranged with installation portion.
9. LED car lamp as claimed in claim 1, wherein, the heat-conducting plastic isolation is provided with vivo and LED light source electricity
The drive circuit board of connection, the drive circuit board receives foreign current and is converted to the foreign current and is suitable for described
The low-tension current of LED light source work.
10. a kind of method for preparing LED car lamp described in any one of claim 1 to 9, comprises the steps：
Metal heat pipe is provided, the metal heat pipe has light source construction section and heat conduction section；
LED light source is installed on described light source construction section；
The metal heat pipe is assembled on metallic heat dissipating part so that the heat conduction section forms heat conduction and connects with the metallic heat dissipating part
Connect；
The heat-conducting plastic slider for coating the heat conduction section is formed using mold injection, it is empty to intercept the heat conduction section and outside
Contact between gas.
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| CN201611261702.0A CN106594627A (en) | 2016-12-30 | 2016-12-30 | LED (Light-emitting Diode) automobile light and preparation method thereof |
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| CN201611261702.0A CN106594627A (en) | 2016-12-30 | 2016-12-30 | LED (Light-emitting Diode) automobile light and preparation method thereof |
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