CN109812770A - Radiator, radiator, optical system and LED headlamp - Google Patents
Radiator, radiator, optical system and LED headlamp Download PDFInfo
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- CN109812770A CN109812770A CN201910148893.7A CN201910148893A CN109812770A CN 109812770 A CN109812770 A CN 109812770A CN 201910148893 A CN201910148893 A CN 201910148893A CN 109812770 A CN109812770 A CN 109812770A
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 74
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- 238000007664 blowing Methods 0.000 abstract description 3
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- 238000005286 illumination Methods 0.000 description 6
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- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- -1 tungsten halogen Chemical class 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
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- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 241001133184 Colletotrichum agaves Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a kind of radiator, radiator, optical system and LED headlamps.Radiator of the invention can be avoided in the cavity where dust and partial heat directly to be blown back to LED chip, so as to avoid the situation for leading to heat dissipation effect difference due to the refluence because of partial heat, it also avoids the introducing of dust simultaneously and reduces light, and situations such as LED chip is interfered, and then while improving heat dissipation effect, the service life of LED headlamp is also extended；Wherein radiator design so that, when bottom fan is to the vertical radiating fin and lateral heat dissipation fin for blowing radiator, heat is taken away along lateral air duct and vertical air duct, by LED chip control at lower temperature, substantial capability reduces light decay and extends in service life.Optical system of the invention is cooperated using the reflector and lens of free form surface, so that it is in rectangle, the oval light type of bottom section that light source emergent ray, which forms top area,.
Description
Technical field
The present invention relates to technical field of LED illumination, have and are related to radiator, the radiator of a kind of LED headlamp, base
In the optical system and LED headlamp of LED chip.
Background technique
Car headlamp generally includes dipped beam and distance light, wherein dipped beam is alternatively referred to as passing beam, and lower beam headlamp provides
The distribution of light is designed to provide for enough forward directions and side lighting, and the light of other road user eyes is directed toward in limitation, with control
Dazzle processed, referring to Fig. 1, also, international Economic Commission for Europe defines that must have one above passing beam sharp and asymmetric
"cut-off"line, in the driver's eye for the automobile for preventing a large amount of light from projecting front truck or coming head-on.Therefore, it is shone before dipped beam
Lamp is suitable for the case where there are other vehicles in front.Wherein, distance light is alternatively referred to as main beam, drives light beam or full light beam, distance light
Headlamp provides bright center and weights light distribution, without especially controlling the light towards other road user eyes, referring to
Fig. 2.Therefore, high beam headlamp is only suitable only for being used alone on road, because the dazzle that they are generated will disperse other driving
The attention of member.
Currently, most of automobile headlamps use traditional light source, such as tungsten halogen lamp or xenon lamp, but conventional light source (such as tungsten halogen lamp
Or xenon lamp) the automobile headlamp service life it is short, damaged vulnerable to shock and vibration, so that high failure rate, and traditional lamp source
Power consumption is higher.In addition, traditional light source is mostly tungsten halogen lamp or xenon lamp, i.e. light source is shone with spherical chart case, therefore, usually also
Need the optical device of such as reflector and lens combination come capture and using high percentage light.
And light emitting diode (LED) has the longer service life than conventional light source, and very hard due to its solid-state structure
Gu in addition, they are shone with the pattern of near hemispherical, for example, light is in an axis due to the reflecting element at the LED die back side
On from about -90 degree to+90 degree transmitting, this make LED become automobile headlamp ideal chose.Therefore, gradually it has been proposed that LED
Headlamp, and in order to reach desired intensity, the quantity of LED illumination module can be close to 10 modules for low beam mode, and 12
A module is used for high beam mode, and each module also needs individual thermal management module.This allows for that big volume is needed
Package illumination module, correspondingly, as the expectation of headlamp requires to be continuously increased, packaging volume requires also to increase.This is resulted in
Additional space requirement in vehicle increases, this is undesirable.On the other hand, the LED headlamp of automobile in use can
Heat is generated, traditional heat dissipating method is using two kinds of radiating modes of active heat removal and passive heat dissipation.Active heat removal relies primarily on
Heat pipe, liquid cooling or fan are realized, wherein the heat dissipation higher cost of heat pipe, heat dissipation area is smaller, and operating environment requirements are high, rapid wear
It is bad；And the principle of liquid cooling is that coolant liquid takes away heat by liquid circulation under the action of pump, workpiece volume is larger, to lamp
Body space requirement is high, and cost is also higher；The effect of simple fan cooling is poor and noise is larger.Passive heat dissipation is by one
The biggish aluminum base of surface area realizes the heat transmitting between pedestal and air, and same heat dissipation effect is poor.Currently, relatively mostly use
It is the mode that fan is combined with radiator, i.e., is installed on a heat sink LED chip by heat-conducting glue, then in radiator
Fan is arranged in tail portion/rear side.However, due to the effect of fan, directly dust and partial heat are passed through on radiator when work
The heat dissipation channel in space is blown back in the cavity where LED chip where being directed toward LED chip, poor so as to cause heat dissipation effect, no
The service life for only influencing LED headlamp, simultaneously because the introducing of dust interferes LED chip, such as shut out the light from
And making brightness and light intensity inadequate, this is just needed using high-power LED chip, if increasing the power of LED chip, naturally also
The power consumption of headlamp is increased, the heat generated is also increased by.
Summary of the invention
For the above technical problems, the present invention provides a kind of radiator of LED headlamp.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of radiator of LED headlamp, including radiator, and it is mounted on the fan of the radiator bottom,
Wherein, the bottom of the radiator and rear side are respectively arranged with lateral air duct and vertical air duct, and the fan is located at the transverse direction
The lower section in air duct, or the lower section positioned at the lateral air duct and the vertical air duct.
Wherein, the radiator includes heat sink body, and the heat sink body bottom is set side by side with multiple along its length
Vertical radiating fin, and lateral air duct is formed between two neighboring vertical radiating fin；And/or the rear side of the heat sink body
Multiple lateral heat dissipation fins are set side by side with along the width direction of the heat sink body, and between two neighboring lateral heat dissipation fin
Form vertical air duct.
Further, the lateral heat dissipation fin is set in qually spaced in the rear side of the heat sink body；And/or it is described perpendicular
The heat sink body bottom is set in qually spaced in radiating fin.
Further, positioned at the heat sink body installation side at least one vertical radiating fin bottom be provided with to
Few two fan mounting holes, the bottom for being located at least one lateral heat dissipation fin of the heat sink body two sides is respectively arranged
There is at least one fan mounting holes；
Further, correspond on the lateral heat dissipation fin and the vertical radiating fin position of the fan to
Upper recess, so that the accommodation space for accommodating the fan is formed, so that the transverse direction air duct is connected with the vertical air duct,
And form accommodation space for accommodating the fan；Alternatively, the vertical radiating fin bottom corresponds to the position of the fan
It sets and is recessed upwards to form the accommodation space for accommodating the fan.
Further, the thickness on rear side of the heat sink body with two vertical radiating fins of installation side is greater than it
The thickness of its vertical radiating fin；And/or be provided with fan mounting holes the lateral heat dissipation fin thickness be greater than other cross
To the thickness of radiating fin.
Further, heat sink body upper surface front end is provided with the circuit board for being integrated with single LED chip, and institute
It states and is evenly arranged with heat dissipation column between the two sides and rear side and the transverse fin of circuit board.
The present invention also provides a kind of radiator of LED headlamp, bottom and rear side are respectively arranged with lateral air duct
(112) and vertical air duct (114), and the lateral air duct (112) is connected with the vertical air duct (114).
The present invention also provides a kind of LED headlamps comprising above-mentioned radiator.
The present invention also provides a kind of optical systems based on free form surface comprising a LED light source, an inner surface are certainly
By the reflector and a lens of curved surface, wherein the light of the LED light source transmitting is after reflector reflection and described in warp
It is in rectangle, the oval light type in bottom that top is formed after lens transmission.
Based on above-mentioned optical system, the present invention also provides the LED headlamps of another comprising above-mentioned heat dissipation
Device, light source module and reflector, lens, the light source module are the circuit board for being integrated with a LED chip, the reflector
Inner surface be free form surface, the circuit board is fixed on the front end of the radiator, and the reflector is covered on the electricity
Above the plate of road, and the normal orientation of the light source module light-emitting surface and the reference for installation plane of reflector (3) are in 90 °, so that institute
It states the light of LED chip transmitting and forms top in rectangle, bottom after reflector reflection and after lens transmission
Oval light type pattern.
The invention has the beneficial effects that:
Radiator and radiator of the invention, has the advantage that
1) its bottom by the way that fan to be arranged in radiator avoids when fan is set up directly on radiator tail portion,
Dust and partial heat are directly blown back into LED chip institute by the heat dissipation channel in space where being directed toward LED chip on radiator
Cavity in, so as to avoid the situation of heat dissipation effect difference is caused due to the refluence because of partial heat, while also avoiding dust
Introducing and reduce light, and to LED chip interfere situations such as, and then improve heat dissipation effect while, before also extending LED
The service life of illuminator.
2) it is equipped with the fan in bottom by the way that lateral air duct and vertical air duct is arranged, thus when operating, fan
Air is sucked from all quarter, to the vertical radiating fin and lateral heat dissipation fin for blowing radiator, along lateral air duct and vertically
Heat is taken away in air duct, so that radiator and the fever of LED are reduced, by LED chip control at lower temperature, so that preceding
Illuminator can work normally in the failure of fan-free or fan, and substantial capability reduces light decay and extends
In service life.
Optical system and headlamp of the invention, has the advantage that
1) it is somebody's turn to do the design based on freeform optics system, improves light utilization efficiency, so that only needing using low-power
Single LED chip can also reach national distance light design standard, and brightness is high, and refracted light is evenly distributed；
2) due to the unique design of reflector, so that reflector size is far smaller than the size of existing various reflectors,
Which provides bigger heat dissipation areas；
3) since reflector size reduces, so that under certain focal length, distance between lens, i.e. lens and LED chip
Reduce, further such that the overall dimensions of headlamp reduce, easily facilitates installation, also provide more heat-dissipating spaces；
4) due to the increase of heat dissipation area, so that corresponding radiator can be designed, thus while improving heat dissipation effect,
Also the service life of LED headlamp is extended.
Detailed description of the invention
Fig. 1 is to reflect that headlamp outgoing light type forms the light type schematic diagram of dipped beam on road surface；
Fig. 2 is to reflect that headlamp outgoing light type forms the light type schematic diagram of distance light on road surface；
Fig. 3 is a kind of structural upright schematic diagram of an embodiment of the radiator of LED headlamp of the invention；
Fig. 4 is the right view of radiator in Fig. 3；
Fig. 5 is the bottom view of radiator in Fig. 3；
Fig. 6 is a kind of structural upright schematic diagram of an embodiment of LED headlamp of the invention；
Fig. 7 is to reflect the optical system exit light in this Fig. 6 in LED headlamp in the distance light light type figure of perpendicular；
Fig. 8 is the perspective view of the explosion for reflecting LED headlamp in Fig. 6；
Fig. 9 is the schematic diagram in high beam mode for reflecting the darkening mechanism of LED headlamp in Fig. 8；
Figure 10 is to reflect that the darkening mechanism of LED headlamp in Fig. 8 is in the schematic diagram of low beam mode；
Figure 11 is dipped beam light type figure of the optical system exit light in reflection figure LED headlamp in perpendicular；
Figure 12 is the structural schematic diagram for reflecting the darkening mechanism of LED headlamp in Fig. 8；
The schematic diagram that Figure 13 matches for push rod in the darkening mechanism in Figure 12 with connector；
Figure 14 is the partial enlarged view of Figure 12.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Herein, " preceding " can be defined as light from the direction that the light of car headlamp issues, and "upper" can be defined
For the direction that light emits upwards, " rear " can be defined as the opposite direction that light issues direction from the light of car headlamp；" bottom
Portion " can be defined as the direction that light emits downwards." front end " used herein, " top ", " upper surface " and " bottom " are made
The corresponding reference for the orientation for being car headlamp on vehicle.Term " upward " and " downward " can be used relative to ground.More
Specifically, term " upward " can be used for describing perpendicular to ground and far from the vector on ground；And term " downward " can be used for describing
Perpendicular to ground and it is directed toward the vector on ground；Normal is perpendicular to the vector on the surface on such as ground, and specifically, normal can be by
Being defined relative to plane is +/- 90 degree.
The present invention avoids fan being set up directly on radiator tail portion by the way that fan to be arranged in the bottom of radiator
When, dust and partial heat are directly blown back into LED chip by the heat dissipation channel in space where being directed toward LED chip on radiator
In the space at place, so as to avoid the situation of heat dissipation effect difference is caused due to the refluence because of partial heat, while ash is also avoided
The introducing of dirt and reduce light, and to LED chip interfere situations such as, and then improve heat dissipation effect while, also extend LED
The service life of headlamp.
The present invention by setting side by side along its length (i.e. X-direction in Fig. 3) in 110 bottom of heat sink body of radiator
Multiple vertical radiating fins 111 are equipped with, so that lateral air duct 112 is formed between two neighboring vertical radiating fin 111, and position
Width direction (the i.e. Fig. 3 of (i.e. the side of the mounting base far from LED chip) along the heat sink body 110 on rear side of the heat sink body
Middle Y direction), multiple lateral heat dissipation fins 113 are set side by side with, thus the shape between two neighboring lateral heat dissipation fin 113
At vertical air duct 114, by respectively at the bottom at least one the vertical radiating fin 111 for being located at the heat sink body 110 installation side
Portion, vertically 111 width direction of radiating fin is provided at least two fan mounting holes, and left and right ends on rear side of the heat sink body
The bottom of at least one vertical radiating fin 113 be also each provided at least one fan mounting holes so that fan can pass through
The fixation members such as screw are fixed on radiator bottom, and therefore, when opening the fan, which sucks air from all quarter,
To the vertical radiating fin and lateral heat dissipation fin for blowing radiator, heat is taken away along lateral air duct and vertical air duct, to drop
The low fever of radiator and LED, by LED chip control at lower temperature, substantial capability reduces light decay and prolongs
It has grown in service life.
The present invention is improved light utilization efficiency, is obtained by the cooperation between the unique reflector of design structure and lens
The novel light type pattern that brightness is high, refracted light is evenly distributed, so that can reach using the single LED chip of low-power
National standard, and since single LED chip can be used, and reflector size is small, so that heat sink body bottom is anti-without adding
Emitter, the distance between the reflector of upper surface and radiating fin also increase, so that the heat dissipation area of headlamp entirety increases
Greatly, and then vertical air duct can be set in heat sink body bottom, while heat dissipation column can be uniformly arranged in the upper surface of heat sink body,
Further improve heat dissipation effect.
It is detailed to the carry out such as radiator of the invention, optical system and headlamp below with reference to specific embodiment and attached drawing
Thin explanation.
Embodiment one
It is a kind of structural upright signal of an embodiment of the radiator of LED headlamp of the invention referring to Fig. 3
Figure, specifically, the radiator of the present embodiment, including radiator 11 and fan 12, and the fan 12 is located at the radiator 11
Bottom.
Referring to Fig. 3, in the present embodiment, which includes heat sink body 110, and the rear side of the heat sink body 110 is (i.e.
Side far from installation pedestal 6) (i.e. Y direction in Fig. 3) is equidistant etc. in the width direction is set side by side with multiple lateral heat dissipations
Fin 113, and vertical air duct 114 is formed between two neighboring lateral heat dissipation fin 113.Specifically, 110 bottom of heat sink body
Left and right ends, and be respectively arranged with support leg close to rear side (i.e. the side of the installation pedestal 6 far from LED headlamp) position
118；And 110 upper surface of heat sink body, and the position of rear side is provided with support plate 115, the width of the support plate 115 is small
In or equal to the heat sink body width, and equally spacedly set side by side in the support plate 115 along the width direction of heat sink body 110
Be equipped with multiple lateral heat dissipation fins 113 (i.e. the lateral heat dissipation fin 113 in the height direction 115 top of self-supporting slab to downward
Stretch, and its bottom is concordant with the bottom of vertical radiating fin 111), and formed between two neighboring lateral heat dissipation fin 113 vertical
Air duct 114.
Referring to fig. 4, in the present embodiment, 110 bottom of heat sink body of the radiator 11 (i.e. X-axis in Fig. 4 along its length
Direction) multiple vertical radiating fins 111 are equally spacedly set side by side with, and formed between two neighboring vertical radiating fin 111
Lateral air duct 112.
Referring to Fig. 5, in the present embodiment, it is located at the heat sink body 110 and side (one i.e. far from lateral heat dissipation fin 113 is installed
End, be usually connected with the installation pedestal 6 of LED headlamp) first vertical radiating fin 111 bottom, along its width side
To setting, there are two fan mounting holes (mounting hole can also be arranged on other vertical radiating fins or heat sink body certainly),
And the left and right sides of the vertical radiating fin 111 of 110 rear side (i.e. close to one end of lateral heat dissipation fin 113) of heat sink body,
The bottom of penultimate lateral heat dissipation fin 113, being also each provided with a fan mounting holes (can also be by the fan mounting holes
Be arranged on heat sink body), and the mounting hole on this two vertical radiating fins 111 of the left and right sides respectively with vertical radiating fin
Two mounting holes of on piece are corresponding one by one respectively.
In the present embodiment, for the ease of installing fan, positioned at the last one vertical radiating fin of 110 rear side of heat sink body
Piece 111 and positioned at heat sink body 110 install side first vertical radiating fin 111 (be provided with the vertical of fan mounting holes
Radiating fin) thickness be greater than other vertical radiating fins thickness；And it is provided with two of the left and right sides of fan mounting holes
The thickness of lateral heat dissipation fin 113 is then greater than the thickness of other lateral heat dissipation fins.Certainly, which can also be according to practical need
It asks, is mounted on other vertical radiating fins 111 and lateral heat dissipation fin 113.
In the present embodiment, in order to further increase heat dissipation performance, the electricity of 110 upper surface of heat sink body (i.e. top surface)
Also uniformly distributed thermal column 116 around road plate 22, referring to fig. 4.
In order to further improve heat dissipation performance, in the present embodiment, each vertical radiating fin 111 and each lateral heat dissipation
Position part on fin 113 corresponding to fan 12 is recessed upwards, to be dissipated by multiple vertical radiating fins 111 and multiple transverse directions
Recess on hot fin 113 forms the accommodation space for accommodating fan, and since multiple vertical radiating fins 111 are recessed, so that
Lateral air duct is connected with the accommodation space with vertical air duct, correspondingly, but also the transverse direction air duct passes through with vertical air duct
The accommodation space is connected, and the transverse direction when fan 12 to be mounted in the accommodation space, in addition to being located at its 12 top of fan
Outside air duct 112, lateral air duct 112 is still around in the left and right sides of the fan 12, after vertical air duct 114 is centered around the fan 12
Side (side i.e. far from LED headlamp mounting base) referring to figs. 2 and 3 so that when fan 12 work when, the air of sucking
It is directly entered lateral air duct 112 and vertical air duct 114 around the accommodation space.
In one embodiment, the middle part of vertical radiating fin is recessed upwards, so that each vertical radiating fin is in
The concave set, then the two side walls of the concave are then respectively placed in the left and right sides (the i.e. lateral air duct not only position of fan
The two sides of fan are also located at the top of fan), correspondingly, lateral heat dissipation fin is close to the front end portion of vertical radiating fin
Recess upwards, then the rear end part of the lateral heat dissipation fin is then located at the rear side of fan (i.e. vertical air duct is not only located at even more
Top is also located at the rear side of fan), so that the accommodation space that can accommodate fan is formed with vertical radiating fin, referring to Fig. 5.
In certain the present embodiment, lateral air duct can also be centered around the front side of the fan, specifically, the fan in Fig. 5 is mobile toward rear end
Certain distance is not recessed upwards in the middle part of the part radiating fin of 110 front end of heat sink body then, then makes parts transversely air duct
Positioned at the front end of fan, and through-hole further can be set on the part radiating fin for being located at fan front, so that being located at
The lateral air duct of fan front is connected with the lateral air duct being located at the top of fan；Certainly, which can also be centered around this
The right side or left side of fan, specifically, will have on the left of the vertical radiating fin in Fig. 5 right side recess walls remove, make its with
Concave bottom is concordant, and the recess walls of the other side then remain unchanged-it is concordant with the bottom of lateral heat dissipation fin so that laterally
Air duct is not only located at the top of fan, may be alternatively located at the left or right side of fan；Certainly, the fan can be also arranged vertical scattered at this
The lower section of hot fin, and it is not arranged in the lower section of lateral heat dissipation fin.
Embodiment two
The present invention also provides a kind of radiators of LED headlamp comprising radiator in above-described embodiment one
All parts, the i.e. bottom of the radiator of the present embodiment and rear side are respectively arranged with lateral air duct 112 and vertical air duct 114,
And the transverse direction air duct 112 is connected with vertical air duct 114.
In one embodiment, which includes heat sink body 110, and the rear side of the heat sink body 110 is (i.e. separate
Installation side) in the width direction (i.e. Y direction in Fig. 3) be set side by side with multiple lateral heat dissipation fins 113, and two neighboring transverse direction
Vertical air duct 114 is formed between radiating fin 113；The left and right ends of 110 bottom of heat sink body, and it is (i.e. separate close to rear side
The installation side of LED headlamp) position is respectively arranged with support leg 118；And 110 upper surface 110-a of the heat sink body, and after
The position of side is provided with support plate 115, and the width of the support plate 115 is less than or equal to the width of the heat sink body 110, and the branch
Width direction on fagging 115 along heat sink body 110 is set side by side with multiple lateral heat dissipation fins 113 (in a specific embodiment
In, which extends downwardly at the top of self-supporting slab 115 in the height direction), and two neighboring lateral heat dissipation wing
Vertical air duct 114 is formed between piece 113, wherein the size of the lateral heat dissipation fin 113 is greater than the vertical radiating fin 111, and
The bottom of the lateral heat dissipation fin is lower than the bottom with vertical radiating fin 111 in the Z-axis direction, so that each vertical wind
The air stream in road 114 can under the outer active force such as fan can with pour into lateral 112 bottom of air duct, and then spatially formed
The vertical air duct is connected with lateral air duct；It certainly, further can also be in the two sidewalls in the transverse direction air duct, i.e., vertical radiating fin
(position for preferably, corresponding to vertical air duct in vertical radiating fin) setting through-hole on piece 111, so that two adjacent transverse directions
Also it is connected between air duct 112, further increases the air flow property between lateral air duct and vertical air duct.
Referring to fig. 4 and Fig. 5, in one embodiment, multiple vertical radiating fin 111 is equally spacedly disposed in parallel in
110 bottom of heat sink body of the radiator 11, and multiple lateral heat dissipation fins 113 are also equally spacedly disposed in parallel in the radiator
In the support plate 115 of 11 110 rear side of heat sink body.
Referring to Fig. 5, in the present embodiment, be located at the heat sink body 110 installation side (i.e. far from lateral heat dissipation fin 113 before
End, be usually connected with the installation pedestal 6 of LED headlamp) first vertical radiating fin 111 bottom, along its width side
To setting, there are two fan mounting holes, and 110 rear side (i.e. close to one end of lateral heat dissipation fin 113) of heat sink body is vertical
The left and right sides of radiating fin 111, penultimate lateral heat dissipation fin 113 bottom, be also each provided with a fan peace
Hole is filled, and the mounting hole on this two vertical radiating fins 111 of the left and right sides is pacified with two on vertical radiating fin respectively
It is corresponding one by one respectively to fill hole.
In the present embodiment, for the ease of installing fan, positioned at the last one vertical radiating fin of 110 rear side of heat sink body
Piece 111 and positioned at heat sink body 110 install side first vertical radiating fin 111 (be provided with the vertical of fan mounting holes
Radiating fin) thickness be greater than other vertical radiating fins thickness；And it is provided with two of the left and right sides of fan mounting holes
The thickness of lateral heat dissipation fin 113 is then greater than the thickness of other lateral heat dissipation fins.Certainly, which can also be according to practical need
It asks, is mounted on other vertical radiating fins 111 and lateral heat dissipation fin 113.
In the present embodiment, in order to further increase heat dissipation performance, 110 upper surface 110-a of the heat sink body (i.e. top table
Face) mounting circuit boards 22 region around also uniformly distributed thermal column 116, referring to fig. 4.
Embodiment three
Based on above-mentioned radiator, the present invention also provides a kind of LED headlamps comprising installation pedestal 6 is integrated with
Circuit board 22, heat-conducting glue and the cooling mechanism being mounted in installation pedestal 6 of one LED chip, wherein the heat dissipation in the present embodiment
Mechanism uses the radiator of above-described embodiment one, the working principle phase of working principle and the radiator of above-described embodiment one
Together, therefore, which is not described herein again.Specifically, in the present embodiment, which is fixed on the cooling mechanism by heat-conducting glue
110 upper surface 110a of heat sink body is close to the front end of the installation pedestal 6, referring to Fig. 3 and Fig. 4, and the installation of other all parts
Mode is the general equipment arrangement of this field, and which is not described herein again.
Example IV
The present invention also provides a kind of optical systems based on free form surface comprising a LED light source, an inner surface are certainly
By the reflector and a lens of curved surface, wherein the light of LED light source transmitting is matched after the reflector 3 reflection and described in warp
Light microscopic 4 forms top after transmiting be in rectangle, the oval light type in bottom.
Certainly, the optical system in the headlamp in the present embodiment is equally applicable to street lamp or other illuminations.
In the present embodiment, by the optical system, so that LED light source emergent ray is in objective plane formation top area
Rectangle, the oval light type of bottom section realize mushroom hot spot or wad compared to existing by the way of light compensating lamp
Or pie, the illumination zone of the distance light light type of pagoda shape, top area and bottom section is wider, and emergent ray distribution is equal
Even, top area and bottom section are very bright, avoid in existing hot spot and intermediate bright peripheral blur occur and cause
The problem of dazzling/dizziness；On the other hand, light utilization efficiency is improved, so that only needing also using the single LED chip of low-power
Enough reach national distance light design standard, and due to the unique design of optical system, so that reflector size is far smaller than existing
Various reflectors size, which provides having bigger heat dissipation area on radiator, meanwhile, but also lens and light
The distance between source reduces, so that the whole fitted position of headlamp reduces, easily facilitates installation, empty in same installation
Between under the premise of, provide more heat-dissipating spaces.
Embodiment five
Optical system based on the above embodiment, the present invention also provides another headlamp based on LED chip, under
It is described in detail in face with specific embodiments and the drawings.
It is a kind of structural upright schematic diagram of an embodiment of headlamp based on LED chip of the invention referring to Fig. 6,
Specifically, the headlamp of the present embodiment includes radiator 1, light source module and reflector 3, lens 4, wherein the light source
Module is the circuit board 22 for being integrated with a LED chip, which is fixed on radiator 1, and reflector 3 is covered on the electricity
22 top of road plate, so that the light of LED chip transmitting is after the reflector 3 reflection and after the transmission of lens 4, formation top is in
Rectangle, the oval light type pattern in bottom, referring to Fig. 7.
Referring to Fig. 8, in the present embodiment, the inner surface of the reflector is free form surface, and LED chip is in the reflector
In focal position.In one embodiment, the design of the reflector inner surface can be realized by a variety of optical design softwares,
Such as the light etc. of extra large drawing, by being inputted in optical design software at the top of corresponding parameter, such as institute's light type to be formed in square
The length and width in shape region, (specific value can be according to country about distance light standard for the long axis and short axle in the oval region in bottom
Illumination region range and brightness are chosen) free form surface can be directly obtained.
In the present embodiment, which is condenser lens, and the radiator 1 is the heat dissipation dress in above-described embodiment one
It sets, specifically, circuit board 22 is mounted on the front end of the 110 upper surface 110-a of heat sink body of radiator 11.
Embodiment six
The present invention also provides another headlamps comprising all parts in above-described embodiment four, unlike,
The headlamp in the present embodiment further includes the darkening mechanism 7 for switching dipped beam and distance light, referring to Fig. 8 and Fig. 9, the darkening machine
Structure 7 is fixed on the front of radiator 1, and the darkening mechanism is not in the opticpath of LED chip emergent ray when high beam mode
In, when switching to low beam mode, which is located in the opticpath of LED chip emergent ray, is divided with occlusion part
Line forms dead line, referring to Figure 11 and Figure 12.
Referring to Fig. 9 and Figure 13, in the present embodiment, which includes mounting base 71 and darkening component, the mounting base 71
It is fixed on 110 front end of heat sink body, darkening component includes solenoid valve 72, distance-light switching barn door 73 and push rod 74, wherein should
One end of the output shaft of solenoid valve 72 is provided with a return springs 75, and the other end is connect with one end of push rod 74, push rod 74
The other end is connected with distance-light switching barn door 73, and distance-light switching barn door 73 and mounting base 71 are rotatablely connected；Specifically,
Referring to Figure 13 and Figure 14, it includes connected connector 731 and shading piece 732 which, which switches barn door 73, wherein connector
731 are provided with a positioning hole close to one end of shading piece 732, and connector 731 is by the shaft 77 and mounting base through location hole
70 rotation connections.
In the present embodiment, when solenoid valve 72 is powered, the output shaft of solenoid valve 72 compresses to the right return springs 75, together
When, output shaft is by the promotion to the right of push rod 74, then push rod 74 pushes distance-light switching barn door 73 relative to 70 inverse time of mounting base
Needle rotation, so that the shading piece 732 of distance-light switching barn door 73 deviates in the opticpath of LED chip emergent ray, thus
High-beam condition is switched to, referring to Fig. 9；When solenoid valve 72 powers off, under the action of return springs 75, the output of solenoid valve 72
It axially moves left, and push rod 74 is driven to be moved to the left, then push rod 74 drives distance-light switching barn door 73 relative to mounting base 70
It rotates clockwise, so that the shading piece 732 of distance-light switching barn door 73 is located in the opticpath of LED chip emergent ray,
With shield portions light, so that dipped beam state is switched to, referring to Figure 10 and Figure 12.
Further, referring to Figure 12 and 14, to prevent dazzle, the distance-light of the darkening mechanism in the present embodiment, which switches, to be hidden
A miniature boss 732b is provided on boss 732a on tabula rasa 73.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of radiator of LED headlamp, which is characterized in that including radiator (11) and fan (12), wherein described
The bottom of radiator (11) and rear side are respectively arranged with lateral air duct (112) and vertical air duct (114), and the fan (12) is located at
The lower section of the transverse direction air duct (112), or it is located at the lower section of lateral air duct (112) and the vertical air duct (114).
2. radiator as described in claim 1, which is characterized in that the radiator (11) includes heat sink body (110), institute
It states heat sink body (110) bottom and is set side by side with multiple vertical radiating fins (111) along its length, and is two neighboring vertical scattered
Lateral air duct (112) is formed between hot fin；And/or the rear side of the heat sink body (110) is along the heat sink body (110)
Width direction be set side by side with multiple lateral heat dissipation fins (113), and formed between two neighboring lateral heat dissipation fin (113)
Vertical air duct (114).
3. radiator as claimed in claim 2, which is characterized in that the lateral heat dissipation fin (113) is set in qually spaced in
The rear side of the heat sink body (110)；And/or the vertical radiating fin (111) is set in qually spaced in the heat sink body
(110) bottom.
4. radiator as claimed in claim 3, which is characterized in that lateral heat dissipation fin (113) bottom and described perpendicular
The position for corresponding to the fan (12) to radiating fin (111) bottom is recessed upwards, so that the transverse direction air duct (112) and institute
It states vertical air duct (114) to be connected, and forms the accommodation space for accommodating the fan (12)；Alternatively, the vertical heat dissipation
The position that fin (111) bottom corresponds to the fan is recessed upwards to form the accommodation space for accommodating the fan.
5. the radiator as described in any one of Claims 1-4, which is characterized in that the heat sink body (110) it is upper
The front end surface (110a) is provided with the circuit board (22) for being integrated with single LED chip, and the two sides of the circuit board (22) and
Heat dissipation column (116) is evenly arranged between rear side and the transverse fin (113).
6. a kind of radiator of LED headlamp, which is characterized in that the bottom of the radiator (11) and rear side are respectively arranged with
Lateral air duct (112) and vertical air duct (114), and the lateral air duct (112) is connected with the vertical air duct (114).
7. a kind of LED headlamp, which is characterized in that including the radiator as described in any one of claim 1 to 5.
8. a kind of optical system based on free form surface, which is characterized in that including a LED light source, an inner surface is free form surface
Reflector and a lens, wherein the light of LED light source transmitting is matched after the reflector (3) reflection and described in passing through
It is in rectangle, the oval light type in bottom that top is formed after light microscopic (4) transmission.
9. a kind of headlamp based on LED chip, including as described in any one of claim 1 to 5 radiator (1),
Light source module and reflector (3), lens (4), which is characterized in that the light source module is the circuit for being integrated with a LED chip
The inner surface of plate (22), the reflector (3) is free form surface, and the circuit board (22) is fixed on the radiator (1)
Front end, the reflector (3) are covered on above the circuit board (22), and the normal orientation of the light source module light-emitting surface and anti-
The reference for installation plane of emitter (3) is in 90 °, so that the light of LED chip transmitting is reflected through the reflector (3) and through institute
Top is formed in rectangle, the oval light type pattern in bottom after stating lens (4) transmission.
10. headlamp as claimed in claim 9 further includes the darkening mechanism (7) for switching dipped beam and distance light, feature exists
In the darkening mechanism (7) is fixed on the front of the radiator (1), and when being in low beam mode, the darkening mechanism
(7) in the opticpath of the LED chip emergent ray, dead line is formed with shield portions light.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821647361 | 2018-10-10 | ||
| CN2018216473615 | 2018-10-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109812770A true CN109812770A (en) | 2019-05-28 |
Family
ID=66607624
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910148893.7A Pending CN109812770A (en) | 2018-10-10 | 2019-02-28 | Radiator, radiator, optical system and LED headlamp |
| CN201920252013.6U Expired - Fee Related CN209431327U (en) | 2018-10-10 | 2019-02-28 | Radiator, radiator, optical system and LED headlamp |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920252013.6U Expired - Fee Related CN209431327U (en) | 2018-10-10 | 2019-02-28 | Radiator, radiator, optical system and LED headlamp |
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| Country | Link |
|---|---|
| CN (2) | CN109812770A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285384A (en) * | 2019-07-26 | 2019-09-27 | 重庆天华照明有限公司 | A kind of upper beam source component, cooling mechanism, darkening mechanism, headlamp |
| CN110805873A (en) * | 2019-12-21 | 2020-02-18 | 上海安珂麟汽车科技有限公司 | Matrix type headlamp |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812770A (en) * | 2018-10-10 | 2019-05-28 | 重庆天华照明有限公司 | Radiator, radiator, optical system and LED headlamp |
| CN111692573B (en) * | 2019-09-30 | 2022-02-25 | 长城汽车股份有限公司 | Lighting device and vehicle |
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| US20020003690A1 (en) * | 2000-07-06 | 2002-01-10 | Bo-Yao Lin | Heat sink capable of having a fan mounted aslant to the lateral side thereof |
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2019
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| US20020003690A1 (en) * | 2000-07-06 | 2002-01-10 | Bo-Yao Lin | Heat sink capable of having a fan mounted aslant to the lateral side thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110285384A (en) * | 2019-07-26 | 2019-09-27 | 重庆天华照明有限公司 | A kind of upper beam source component, cooling mechanism, darkening mechanism, headlamp |
| CN110805873A (en) * | 2019-12-21 | 2020-02-18 | 上海安珂麟汽车科技有限公司 | Matrix type headlamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN209431327U (en) | 2019-09-24 |
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