WO2014015484A1 - Led汽车大灯 - Google Patents

Led汽车大灯 Download PDF

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Publication number
WO2014015484A1
WO2014015484A1 PCT/CN2012/079143 CN2012079143W WO2014015484A1 WO 2014015484 A1 WO2014015484 A1 WO 2014015484A1 CN 2012079143 W CN2012079143 W CN 2012079143W WO 2014015484 A1 WO2014015484 A1 WO 2014015484A1
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WO
WIPO (PCT)
Prior art keywords
heat
led
substrate
heat conducting
heat dissipating
Prior art date
Application number
PCT/CN2012/079143
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English (en)
French (fr)
Inventor
赖益嵩
Original Assignee
深圳市益科光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市益科光电技术有限公司 filed Critical 深圳市益科光电技术有限公司
Priority to KR1020157004019A priority Critical patent/KR20150036646A/ko
Priority to JP2015523362A priority patent/JP6014253B2/ja
Priority to PCT/CN2012/079143 priority patent/WO2014015484A1/zh
Priority to US14/416,918 priority patent/US9476564B2/en
Publication of WO2014015484A1 publication Critical patent/WO2014015484A1/zh

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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
    • 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
    • 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
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • 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
    • 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
    • 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
    • F21S45/49—Attachment of the cooling means
    • 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
    • F21S45/50—Waterproofing
    • 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
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • 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]

Definitions

  • the present invention relates to the field of lighting equipment, and more particularly to an LED automobile headlight.
  • HID High Intensity Discharge, high-intensity gas discharge xenon lamp
  • LED lighting modules These packaged modules are respectively arranged on different heat dissipation structures and then installed in the lamp holders of the headlights.
  • the gap between the light source module and the heat dissipation structure is filled with a conductive silver paste and a thermal paste.
  • the light source module and the heat dissipation structure have a certain thermal resistance, thereby causing a large temperature difference between the light source module and the heat dissipation structure, and the heat conduction problem cannot be completely solved. Then, based on the above problems, the LED can not reach a large power, and the brightness and electro-optical conversion rate of the LED are low.
  • An LED car headlight includes:
  • LED lamp disposed on the substrate
  • the heat conducting member is elongated, the substrate is fixed to one end of the heat conducting member, and the heat conducting member is filled with a low boiling liquid;
  • the heat dissipating member includes a heat dissipating tube and a heat sink, and the heat dissipating tube is provided with a through hole for receiving the heat conducting member, and the heat dissipating tube is fixedly disposed around the one end of the substrate.
  • the device further includes a latching member disposed on the heat dissipating tube, and the latching member is configured to fix the heat dissipating member provided with the LED lamp to a bulb card of a car headlight assembly. On the seat.
  • the latching member includes a cylindrical connecting portion and a latching portion, the connecting portion is sleeved on the heat dissipating sleeve, and the latching portion is radially formed by the outer sidewall of the connecting portion And a latching portion, wherein the latching portion is configured to be engaged with a bulb socket of the corresponding headlight assembly of the corresponding bulb type, and the distance between the latching portion and the LED light emitting point conforms to a focal length standard of the automobile lamp.
  • the heat conducting member comprises a heat conducting platform and a heat pipe
  • the substrate is fixed to an end surface or a side of one end of the heat conducting platform, and the other end or the inner hole of the heat conducting platform is connected with the heat pipe.
  • the heat pipe is accommodated in the through hole.
  • the utility model further includes a waterproof member disposed on the latching member, the waterproof member is disposed on a groove formed in the connecting portion, and the waterproof member is located at the latching portion and the LED The opposite side of the lamp.
  • the method further includes a control module and a temperature sensor, wherein the temperature sensor is disposed on the substrate to test a temperature value of the LED lamp; the heat dissipating member further includes a fan, and the fan is coupled to the heat sink The fan is opposite to the heat conducting member; the control module controls the fan to operate according to the temperature value.
  • the heat sink is provided with a receiving groove for receiving the fan on a side of the heat conducting member coaxially away from the substrate.
  • the inner wall of the thermally conductive member is provided with a capillary tube.
  • the heat sink includes a first section and a second section that are sleeved with each other, and the latching member is sleeved on an end of the second section adjacent to the first section, the heat sink And disposed at an end of the second segment away from the first segment.
  • the first and second sections are threaded by a sleeve.
  • the above LED automobile headlights replace the tungsten wire or the gas discharge lamp in the conventional automobile headlight by using the LED lamp, thereby improving the brightness and working efficiency of the headlight of the automobile while reducing the energy consumption, and circulating the LED by using the low boiling point liquid in the heat conducting member.
  • the heat generated by the lamp to the heat dissipating member accelerates the dissipation of heat. Due to the increased heat dissipation, higher power LEDs are used to improve performance.
  • the substrate provided with the LED lamp is disposed on the end surface or the side surface of one end of the heat conducting member, so that the LED lamp can be arranged in various arrangements, that is, different brightness and angle designs can be realized, which are respectively applicable to various types of automobile headlights. Assembly.
  • Figure 1 is a side view of an LED car headlight in an embodiment
  • Figure 2 is a cross-sectional view of the LED car headlight shown in Figure 1;
  • Figure 3 is an exploded view of the LED car headlight shown in Figure 1;
  • Figure 4 is a plan view of the LED car headlight shown in Figure 1;
  • Figure 5 is an exploded view of an LED car headlight in another embodiment
  • Figure 6 is a cross-sectional view of the LED car headlight shown in Figure 5;
  • Figure 7 is a front elevational view of the LED car headlight shown in Figure 5;
  • Figure 8 is a plan view of the LED car headlight shown in Figure 5;
  • Figure 9 is an exploded perspective view of a thermally conductive member in another embodiment
  • Figure 10 is an exploded perspective view of the latching member in another embodiment
  • Figure 11 is a front elevational view of an LED car headlight utilizing the thermally conductive member of Figure 9 and the retaining member of Figure 9;
  • Figure 12 is an exploded view of a car headlight in still another embodiment
  • Figure 13 is a front elevational view of the LED car headlight shown in Figure 12;
  • Figure 14 is a rear elevational view of an LED car headlight in an embodiment.
  • an LED automobile headlight in an embodiment includes an LED lamp, a substrate 100 , a heat conducting member 200 , a heat dissipating member 300 , and a latching member 400 .
  • the LED lamp is disposed on the substrate 100, and the substrate 100 is a PCB (Printed circuit)
  • the number of the LED lamps may be one or more.
  • the LED lamps are plural, they are respectively disposed on the plurality of substrates 100, and may of course be disposed on the same substrate 100. .
  • Multiple LED lights can increase the brightness of LED car headlights.
  • the heat conducting member 200 is elongated, that is, may be a cylindrical shape, a rectangular parallelepiped shape, a polyhedral elongated shape, or the like.
  • the substrate 100 is fixed to one end of the heat conductive member 200.
  • the LED light on the substrate 100 emits heat and conducts heat.
  • the member 200 transfers heat from one end of the substrate 100 to the other end.
  • the heat conducting member 200 includes a heat conducting platform 220 and a heat conducting tube 240.
  • the substrate 100 is fixed to an end surface or a side surface of one end of the heat conducting platform 220, and the other end of the heat conducting platform 220 or the inner hole thereof is connected with the heat conducting tube 240, specifically, heat conduction.
  • the platform 220 and the heat pipe 240 may be integrally formed, or the ends of the two may be connected by welding; or, at one end of the heat conducting platform 220 opposite to the heat pipe 240, an opening (the above hole) will be provided.
  • the end of the 240 is received and fixed. With such a setting, the LED lamp can be distributed in various ways on the premise of conforming to the standard of the illumination focal length of the automobile headlight.
  • one or more LED lamps thereon can be evenly distributed in a plane;
  • a side surface or a plurality of LED lamps provided with the heat conductive member 200 may be distributed in a ring shape, symmetrically distributed or asymmetrically distributed (as shown in the figure). 8)), it can also be a misalignment distribution (as shown in Figure 8), so that LED car headlights can achieve high and low, far and near lights.
  • the heat conduction platform 220 may be a “T” type, and the substrate 100 is fixed on the top of the “T” shape.
  • the heat conduction platform 220 may also be a flat rectangular parallelepiped, and the substrate 100 is fixed on the substrate 100.
  • the two sides of the cuboid make the LED lamp symmetrically or asymmetrically distributed with respect to the cuboid (as shown in FIG. 8); referring to FIGS. 9, 11, 12, the heat conduction platform 220 may also have a polyhedral strip shape, the polyhedron one or more or A substrate 100 is disposed on each side such that the LED lamps are annularly distributed with respect to the polyhedron.
  • the heat conducting member 200 is filled with a low boiling point liquid.
  • the heat conducting tube 240 is filled with a low boiling point liquid.
  • the heat conducting platform 220 may also be filled with a low boiling point liquid in the body.
  • the low boiling point liquid is water vapor.
  • the inside of the heat transfer member 200 is evacuated to a negative pressure state, filled with a suitable low boiling point liquid, and is easily volatilized.
  • the inner wall of the heat conducting member 200 is provided with a capillary tube (absorber) which is composed of a capillary porous material.
  • One end of the heat conduction member 200 near the substrate 100 is an evaporation end, and the other end is a condensation end.
  • the heat dissipating member 300 includes a heat dissipating tube 320 and a heat sink 340.
  • the heat dissipating tube 320 is provided with a through hole 330 for receiving the heat conducting member 200.
  • the heat conducting tube 240 of the heat conducting member 200 is received in the through hole 330, and is abutted by the elastic piece. Fixing is achieved between the outer side wall of the tube 240 and the inner side wall of the through hole 330, or between the heat transfer tube 240 and the through hole 330 by screws, threads or snaps.
  • a heat sink 340 is fixedly disposed around the end of one end of the heat sink 320 away from the substrate 100.
  • the outer side wall of the heat sink 320 is provided with a non-slip thread for improving the torque when the heat dissipating member 300 is assembled, so that the heat dissipating member 300 is structurally reliable.
  • two channels 324 are formed on both sides of the through hole 330, and the channel 324 can be used to place a wire for supplying power to the LED lamp and providing a control signal, and at the same time, the channel 324 will be partially connected to the through hole 330 of the heat conducting member 200.
  • the air is isolated so that the heat conducting member 200 transfers more heat to the direction in which the fins 340 are provided instead of being transmitted to both sides, improving heat dissipation efficiency.
  • the heat sink 320 includes a first section 326 and a second section 328 that are sleeved to each other.
  • the first section 326 and the second section 328 are threadedly coupled by a sleeve 322.
  • the outer side wall of the sleeve 322, and the heat sink 340 is disposed at an end of the second section 328 away from the first section 326.
  • the first section 326 is integrally formed with the sleeve 322.
  • the heat sink 320 is designed as a first section 326 and a second section 328 which can be combined to facilitate the opening of the through hole 330 and the passage 324, which reduces the difficulty of production and processing; and facilitates assembly of the heat dissipating member 300 and the LED headlight. .
  • the LED automobile headlight further includes a control module (not shown) and a temperature sensor 600, and the temperature sensor 600 is disposed on the substrate 100 for detecting
  • the heat dissipating member 300 further includes a fan 360.
  • the fan 360 abuts the heat sink 340, and the fan 360 is opposite to the heat conducting member 200.
  • the control module controls the fan 360 according to the temperature value. Work, speed up the heat dissipation of LED car headlights.
  • the heat sink 340 is provided with a receiving groove 342 for receiving the fan 360 on the side of the heat conducting member 200 that is coaxially away from the substrate 100 .
  • the heat pipe 240 is away from one end of the heat conducting platform 220, that is, the end opposite to the fan 260 is tapered, which increases the contact area with the air and accelerates heat dissipation.
  • the diameter of the fan 360 is larger than the diameter of the heat sink 320, so that not only the heat dissipation of the heat sink 340 and the heat sink 320 can be accelerated, but after the LED headlights are mounted to the bulb seat of the automobile headlight assembly.
  • the fan 360 can also dissipate heat from the bulb holder, the lamp bowl, and the like of the car headlight assembly.
  • the latching member 400 is sleeved on the heat sink 320 , and the latching member 400 is configured to fix the heat dissipating member 300 provided with the LED lamp to the bulb holder of the automobile headlight assembly.
  • the heat dissipating member 300 is the structural main body of the entire LED automobile headlight, and the heat dissipating member 300 is fixed on the bulb seat of the automobile headlight assembly, which is equivalent to fixing the LED car headlight to the automobile.
  • the headlight assembly is on the light bulb deck.
  • the latching member 400 is sleeved on one end of the second segment 328 of the heat sink 320 adjacent to the first segment 326.
  • the outer diameter of the first segment 326 is larger than the outer diameter of the second segment 328, and the latching member 400 is sleeved behind the second segment 328, and the connection between the first segment 326 and the second segment 328 is locked.
  • the clamping member 300 is pressed against the heat dissipating member 300 to achieve fixation between the latching member 400 and the heat dissipating member 300.
  • the inner diameter of the latching member 400 is similar to the outer diameter of the heat dissipating cylinder 320.
  • the latching member 400 and the heat dissipating cylinder 320 are respectively provided with corresponding threads, and the latching member 400 and the heat dissipating cylinder 320 are screwed together.
  • the member 400 and the heat sink 320 can also be connected by screws or snap slots.
  • the latching member 400 includes a cylindrical connecting portion 420 and a latching portion 440.
  • the connecting portion 420 is sleeved on the heat sink 320.
  • the latching portion 440 is radially protruded from the outer sidewall of the connecting portion 420, and the latching portion 440 is used for
  • the bulb holder of the car headlight assembly corresponding to the bulb type is engaged.
  • the connecting portion 420 is provided with a recess (or protrusion) 426 and the latch portion 440 is provided with a notch (or protrusion) 442, the recess (or protrusion) 426 and the notch (or protrusion).
  • the 442 is matched to a corresponding projection (or recess) on the bulb holder of the car headlight assembly for positioning when the LED car chandelier is mounted.
  • a connecting portion 420 of the latching member 400 is provided with a recess 422 for receiving the waterproof member 500.
  • the waterproof member 500 is located at a side of the latching portion 440 opposite to the LED lamp. .
  • the second section 328 of the heat sink 320 is also provided for receiving waterproof
  • the heat dissipating member 300 is snapped or screwed with the latching member 400 to realize complete installation of the LED automobile headlight, then, heat dissipation
  • the waterproof member 500 sleeved on the recessed ring 329 is pressed between the latching member 400 and the heat sink 320 to achieve sealing and waterproofing.
  • the waterproof member 500 is a waterproof rubber ring made of silicone.
  • the latching member 400 further includes an annular base 460 that is sleeved on the heat sink 320 in the heat dissipation structure 300 or fixed to the heat sink 340 by screws.
  • the side wall of the connecting portion 420 of the latching member 400 is outwardly provided with a protrusion 426.
  • the side wall of the base 460 is provided with a matching slot 462 corresponding to the protrusion 426.
  • the heat dissipating member 300 and the latching member 400 can pass through the protrusion.
  • the 426 and the matching slot 462 are positioned and fixed.
  • FIG. 12 it is an LED automobile headlight in a preferred embodiment.
  • the card member 400 shown in FIG. 10 is combined, and the substrate 100 is fixedly disposed on the semi-cylindrical heat conduction platform 220. It is disposed on the cut surface of the semi-cylindrical body such that the LED lamps on the substrate 100 are placed radially.
  • two or more LED lamps can be disposed on the cut surface of the semi-cylindrical body to increase the brightness, and at the same time, the high and low lamp functions of the LED automobile headlight can be realized.
  • the LED lamp and the temperature sensor 600 are fixed on the substrate 100, and then the substrate 100 is fixed to the heat conduction platform 220 of the heat conductive member 200, and the heat conduction platform 220 is fixed to the heat dissipation tube 320 after being connected to the heat conduction tube 240.
  • the card member 400 that has been sleeved with the waterproof member 500 is fixed to the bottom of the bulb holder of the automobile headlight assembly, and the wires for supplying and transmitting control signals are taken from the passage 324 on the heat sink 320 ( As shown in FIG.
  • the opening of the latching member 400 is connected to the substrate 100 provided with the LED lamp, and then the second segment 328 of the heat sink 320 with the heat sink 340 is fixed to the latching member 400.
  • the first section 326 of the heat sink 320 to which the heat conducting member 200 and the like are fixed is butted to the second section 328 of the heat sink 320, and finally the fan 360 is mounted in the recess 342 of the heat sink 340 to connect the wire to the vehicle power source.
  • the above LED automobile headlights replace the tungsten wire in the conventional automobile headlights by using the LED lamps, improve the brightness and working efficiency of the automobile headlights, and transfer the heat generated by the LED lamps to the heat radiating member 300 by using the low boiling point liquid in the heat conducting member 200.
  • the fan 360 is used to accelerate the heat dissipation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

一种LED汽车大灯，包括LED灯，设于基板（100）上；导热构件（200），为长条形，基板（100）固定于导热构件（200）的一端，导热构件（200）体内充有低沸点液体；散热构件（300），包括散热筒（320）和散热片（340），散热筒（320）开设有用于收容导热构件（200）的通孔，散热筒（320）远离基板一端的四周固定设有散热片（340）。LED汽车大灯通过使用LED灯替换传统的钨丝和HID，并利用导热构件（200）内的低沸点液体循环传递LED灯产生的热量到后端再利用散热构件（300）散出热量。

Description

LED汽车大灯
【技术领域】
本发明涉及照明设备领域，特别是涉及一种 LED 汽车大灯。
【背景技术】
传统汽车大灯，使用真空钨丝灯泡发光，或使用气体放电发光HID（High Intensity Discharge，高强度气体放电氙气灯）；或是使用的多个单个的LED发光模块。将这些封装好的模块分别设在不同的散热结构上，再安装到车大灯的灯座中。而对于光源模块与散热结构之间的空隙利用导热银胶和涂抹导热膏来填充。对应上述两种情况，光源模块与散热结构之间具有一定热阻，由此导致光源模块和散热结构之间较大的温差，不能完全解决导热问题。那么，基于上述的问题，就会导致LED不能达到较大的功率，而使得LED的亮度和电光转换率低。
【发明内容】
基于此，有必要针对LED功率低，散热不好问题，提供一种散热性能良好、可安装大功率LED的LED汽车大灯。
一种LED汽车大灯包括：
LED灯，设于基板上；
导热构件，为长条形，所述基板固定于所述导热构件的一端，所述导热构件体内充有低沸点液体；
散热构件，包括散热筒和散热片，所述散热筒开设有用于收容所述导热构件的通孔，所述散热筒远离所述基板一端的四周固定设有所述散热片。
在其中一个实施例中，还包括套设在所述散热筒的卡位构件，所述卡位构件用于将所述设有所述LED灯的散热构件固定于汽车大灯总成的灯泡卡座上。
在其中一个实施例中，所述卡位构件包括为筒形的连接部和卡位部，所述连接部套设在所述散热筒，所述卡位部由所述连接部外侧壁径向凸起，所述卡位部用于与所述相对应灯泡型号的汽车大灯总成的灯泡卡座卡接，所述卡位部与所述LED灯发光点的距离符合汽车灯具焦距标准。
在其中一个实施例中，所述导热构件包括导热平台和导热管，所述基板固定于所述导热平台一端的端面或侧面，所述导热平台另一端或内孔与所述导热管连接，所述导热管收容与所述通孔。
在其中一个实施例中，还包括设于所述卡位构件的防水构件，所述防水构件设置于所述连接部上开设的凹槽，所述防水构件位于所述卡位部与所述LED灯相向的一侧。
在其中一个实施例中，还包括控制模块和温度传感器，所述温度传感器设置于所述基板测试所述LED灯的温度值；所述散热构件还包括风扇，所述风扇与所述散热片抵接，所述风扇与所述导热构件相对；所述控制模块根据所述温度值控制所述风扇工作。
在其中一个实施例中，所述散热片于所述导热构件同轴远离所述基板的一侧开设有用于收容所述风扇的收容槽。
在其中一个实施例中，所述导热构件体内侧壁设置有毛细管。
在其中一个实施例中，所述散热筒包括相互套接的第一段和第二段，所述卡位构件套设于所述第二段靠近所述第一段的一端，所述散热片设置于所述第二段远离所述第一段的一端。
在其中一个实施例中，所述第一段和第二段通过一套筒螺纹连接。
上述LED汽车大灯通过使用LED灯替换传统汽车大灯中的钨丝或气体放电灯，提高了汽车大灯的亮度及工作效率同时降低能耗，并利用导热构件内的低沸点液体循环传递LED灯产生的热量到散热构件加快热量的散发。由于散热功能的提升，那么使用更高功率的LED灯以提高性能。
此外，将设有LED灯的基板设于导热构件的一端的端面或侧面，可以使得LED灯呈现多种排列分布，即可以实现不同亮度、角度的设计，分别适用于多种型号的汽车大灯总成。
【附图说明】
图1为一实施例中的LED汽车大灯侧视图；
图2为图1所示的LED汽车大灯的剖视图；
图3为图1所示的LED汽车大灯的爆炸图；
图4为图1所示的LED汽车大灯的俯视图；
图5为另一实施例中的LED汽车大灯的爆炸图；
图6为图5所示的LED汽车大灯的剖视图；
图7为图5所示的LED汽车大灯的正视图；
图8为图5所示的LED汽车大灯的俯视图；
图9为另一实施例中的导热构件的分解示意图；
图10为另一实施例中的卡位构件的分解示意图；
图11为利用了图9的导热构件和图9中的卡位构件的LED汽车大灯的正视图；
图12为又一个实施例中的汽车大灯的爆炸图；
图13为图12所示的LED汽车大灯的正视图；
图14为一实施例中的LED汽车大灯的后视图。
【具体实施方式】
如图1所示，为一实施例中的LED汽车大灯，包括：LED灯、基板100、导热构件200、散热构件300及卡位构件400。
LED灯设于基板100上，基板100为PCB板（Printed circuit board、印刷电路板），本实施例中，LED灯可以为一个，也可以为多个，LED灯为多个时，分别设于多个基板100上，当然也可以设于同一个基板100上。多个LED灯可以增加LED汽车大灯的亮度。
导热构件200为长条形，即可以是圆柱形、长方体、多面体的长条形等，基板100固定于导热构件200的一端，LED汽车大灯工作时，基板100上的LED灯发出热量，导热构件200将设有热量从设有基板100的一端传递到另一端。
优选的实施例中，导热构件200包括导热平台220和导热管240，基板100固定于导热平台220一端的端面或侧面，导热平台220另一端或其内孔与导热管240连接，具体地，导热平台220与导热管240可以是一体成型，也可以是两者的端部通过焊接连接；或者是，在导热平台220与导热管240相对的一端设有开孔（上述的内孔）将导热管240的端部收容入内并固定。如此设置，可以使得LED灯在符合汽车大灯发光焦距标准的前提下，可以呈多种分布，如基板100设于导热构件200端面时，其上的一个或多个LED灯可以平面均匀分布；参考图7、11、12、13，如基板100设于导热构件200的侧面时，可使得一个设有导热构件200的侧面或多个LED灯呈环形分布、对称分布或非对称分布（如图8所示），还可以是错位分布（如图8所示），使得LED汽车大灯实现高低、远近灯。
参考图2、3，导热平台220可以是“T”型，基板100固定于该“T”型的顶部；参考图5、6、7，导热平台220还可以是扁平的长方体，基板100固定于该长方体的两侧，使得LED灯相对该长方体对称或非对称分布（如图8所示）；参考图9、11、12，导热平台220还可以多面体长条形，该多面体一个或多个或每个侧面上均设置有基板100，使得LED灯相对该多面体呈环形分布。
如图2所示，导热构件200体内充有低沸点液体，具体地，是导热管240体内充有低沸点液体，当然，上述的导热平台220也可以在体内充有低沸点液体，优选地，该低沸点液体为水蒸气。导热构件200内部是被抽成负压状态，充入适当的低沸点液体，容易挥发。优选地，导热构件200体内侧壁设置有毛细管（吸液芯），毛细管其由毛细多孔材料构成。导热构件200靠近基板100的一端为蒸发端，另一端为冷凝端，当导热构件200的蒸发端受热时，热量由导热构件200的蒸发端传至冷凝端。具体地，毛细管中的液体迅速蒸发，汽化的低沸点液体在微小的压力差下流向冷凝端，并且释放出热量，重新凝结成液体，液体再沿多孔材料靠毛细力的作用流回蒸发段，如此循环不止，热量由导热构件200的蒸发端传至冷凝端。这种循环是快速进行的，热量可以被源源不断地传导开来。
散热构件300包括散热筒320和散热片340，散热筒320开设有用于收容导热构件200的通孔330，具体为，导热构件200的导热管240收容于通孔330，通过用弹片抵接在导热管240的外侧壁和通孔330的内侧壁之间实现固定，或者通过螺钉、螺纹或卡合件使导热管240和通孔330之间实现固定。散热筒320远离基板100一端的四周固定设有散热片340。在本实施中，散热筒320的外侧壁设有防滑螺纹，该防滑螺纹用于提高组装散热构件300时的扭力，使得散热构件300结构可靠。
此外，通孔330的两侧开设有两条通道324，该通道324可以用来放置为LED灯供电和提供控制信号的导线，同时，通道324将安装有导热构件200的通孔330实现部分的空气隔离，使得导热构件200将更多的热量传递到设有散热片340的方向，而不是传到两侧，提高散热效率。
如图3、5所示，散热筒320包括相互套接的第一段326和第二段328，第一段326和第二段328通过一套筒322螺纹连接，上述的防滑螺纹被开设在套筒322的外侧壁，而散热片340设置于第二段328远离第一段326的一端，本实施例中，第一段326与套筒322一体成型。将散热筒320设计成可组合的第一段326和第二段328，有利于通孔330和通道324的开设，降低生产加工的工作难度；同时有利于散热构件300、LED汽车大灯的组装。
如图1、3、4、5、6、7所示，优选的实施例中，LED汽车大灯还包括控制模块（图未示）和温度传感器600，温度传感器600设置于基板100用于检测LED灯的温度值；如图2、3、4等所示，散热构件300还包括风扇360，风扇360与散热片340抵接，风扇360与导热构件200相对；控制模块根据温度值控制风扇360工作，加快了LED汽车大灯的散热。
优选地，如图14所示，散热片340于导热构件200同轴的远离基板100一侧开设有用于收容风扇360的收容槽342。且导热管240远离导热平台220的一端，即与风扇260相对的一端设置成锥形，增大了其与空气的接触面积，加快了散热。本实施例中，风扇360的直径比散热筒320的直径要大，如此不但可以加快散热片340、散热筒320的散热，在将LED汽车大灯安装到汽车大灯总成的灯泡卡座后，风扇360还可以对汽车大灯总成的灯泡卡座、灯碗等散热。
如图1所述，卡位构件400套设在散热筒320，卡位构件400用于将设有LED灯的散热构件300固定于汽车大灯总成的灯泡卡座上。可以理解的是，本实施例中散热构件300为整个LED汽车大灯的结构主体，将散热构件300固定于汽车大灯总成的灯泡卡座上，即相当于将LED汽车大灯固定于汽车大灯总成的灯泡卡座上。具体地，结合图2、3、4、5、10、11，卡位构件400套设于散热筒320的第二段328靠近第一段326的一端。在优选的实施例中，第一段326的外径比第二段328的外径大，卡位构件400套设于第二段328后，通过第一段326与第二段328的连接锁紧使卡位构件300的压紧在散热构件300上，以实现卡位构件400与散热构件300之间的固定。在其他实施例中，卡位构件400的内径与散热筒320的外径相近，卡位构件400和散热筒320上开设有相应的螺纹，卡位构件400和散热筒320通过螺纹连接，卡位构件400和散热筒320也可以通过螺钉、卡扣卡槽连接。
卡位构件400包括为筒形的连接部420和卡位部440，连接部420套设在散热筒320，卡位部440由连接部420外侧壁径向凸起，卡位部440用于与相对应灯泡型号的汽车大灯总成的灯泡卡座卡接。通过卡位部440与LED灯发光点的距离，即LED的发光焦距符合汽车灯具焦距标准。
参考图5和图9，连接部420开设有凹位（或凸起）426和卡位部440上开设有缺口（或突起）442，该凹位（或凸起）426和缺口（或突起）442与汽车大灯总成的灯泡卡座上的对应凸起（或凹穴）相匹配，用于在安装LED汽车吊大灯时定位。
结合图2、3、4、5、6、7，卡位构件400的连接部420上开设有用于收容防水构件500的凹槽422，防水构件500位于卡位部440与LED灯相向的一侧。当要将LED汽车大灯安装到汽车大灯总成的灯泡卡座时，卡位构件400先固定于汽车大灯总成的灯泡卡座上，此时，套设在凹槽422的防水构件500被挤压在卡位构件400与汽车大灯总成的灯泡卡座之间，实现密封防水；另外，参考图5和图6，散热筒320的第二段328上也开设有用于收容防水构件500的凹环329，卡位构件400固定于汽车大灯总成的灯泡卡座后，散热构件300与卡位构件400卡接或螺纹连接，实现LED汽车大灯的完整安装，那么，散热构件300与卡位构件400对接后，套设在凹环329的防水构件500被挤压在卡位构件400与散热筒320之间，实现密封防水。本实施例中，防水构件500为由硅胶制成的防水胶圈。
结合图10和图11，在另一个实施例中，卡位构件400还包括圆环状的底座460，底座460套设于散热构300中的散热筒320或通过螺钉固定于散热片340上。卡位构件400的连接部420侧壁上向外设有凸起426，底座460的侧壁开设有与该凸起426对应匹配的卡槽462，散热构件300与卡位构件400可通过凸起426和与其匹配的卡槽462实现定位及固定。
参考图12，为一优选实施例中的LED汽车大灯，本实施例中，结合了图10示出的卡位构件400，且将基板100固定设置在半圆柱体的导热平台220上，具体是设置在半圆柱体的切面上，使得基板100上的LED灯径向放置。在其他实施例中，可以设置两个或以上的LED灯于半圆柱体的切面上，可以增加亮度，同时，如此设置也可以实现LED汽车大灯的高低灯功能。
下面结合附图2，对一实施例的LED汽车大灯的装配过程进行描述。
第一步，将LED灯及温度传感器600固定于基板100上，再将基板100固定与导热构件200的导热平台220上，将导热平台220与导热管240对接后先固定于散热筒320的第一段326的相应位置。第二步，将已经套设有防水构件500的卡位构件400固定于汽车大灯总成的灯泡卡座的底部，将用于供电和传输控制信号的导线从散热筒320上的通道324（如图2所示）、卡位构件400的开孔中穿过与设有LED灯的基板100连接，再将带有散热片340的散热筒320第二段328固定于卡位构件400上后，将上述固定有导热构件200等部件的散热筒320第一段326与散热筒320第二段328对接，最后将风扇360安装于散热片340的凹槽342中，将导线与汽车电源连接。
上述LED汽车大灯通过使用LED灯替换传统汽车大灯中的钨丝，提高了汽车大灯的亮度及工作效率，并利用导热构件200内的低沸点液体传递LED灯产生的热量到散热构件300的散热片340上，再利用风扇360加快热量的散发。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种LED汽车大灯，其特征在于，包括：
    LED灯，设于基板上；
    导热构件，为长条形，所述基板固定于所述导热构件的一端，所述导热构件体内充有低沸点液体；
    散热构件，包括散热筒和散热片，所述散热筒开设有用于收容所述导热构件的通孔，所述散热筒远离所述基板一端的四周固定设有所述散热片。
  2. 根据权利要求1所述的LED汽车大灯，其特征在于，还包括套设在所述散热筒的卡位构件，所述卡位构件用于将所述设有所述LED灯的散热构件固定于汽车大灯总成的灯泡卡座上。
  3. 根据权利要求2所述的LED汽车大灯，其特征在于，所述卡位构件包括为筒形的连接部和卡位部，所述连接部套设在所述散热筒，所述卡位部由所述连接部外侧壁径向凸起，所述卡位部用于与所述相对应灯泡型号的汽车大灯总成的灯泡卡座卡接，所述卡位部与所述LED灯发光点的距离符合汽车灯具焦距标准。
  4. 根据权利要求3所述的LED汽车大灯，其特征在于，所述导热构件包括导热平台和导热管，所述基板固定于所述导热平台一端的端面或侧面，所述导热平台另一端或内孔与所述导热管连接，所述导热管收容与所述通孔。
  5. 根据权利要求3所述的LED汽车大灯，其特征在于，还包括设于所述卡位构件的防水构件，所述防水构件设置于所述连接部上开设的凹槽，所述防水构件位于所述卡位部与所述LED灯相向的一侧。
  6. 根据权利要求1所述的LED汽车大灯，其特征在于，还包括控制模块和温度传感器，所述温度传感器设置于所述基板测试所述LED灯的温度值；所述散热构件还包括风扇，所述风扇与所述散热片抵接，所述风扇与所述导热构件相对；所述控制模块根据所述温度值控制所述风扇工作。
  7. 根据权利要求6所述的LED汽车大灯，其特征在于，所述散热片于所述导热构件同轴远离所述基板的一侧开设有用于收容所述风扇的收容槽。
  8. 根据权利要求1所述的LED汽车大灯，其特征在于，所述导热构件体内侧壁设置有毛细管。
  9. 根据权利要求2所述的LED汽车大灯，其特征在于，所述散热筒包括相互套接的第一段和第二段，所述卡位构件套设于所述第二段靠近所述第一段的一端，所述散热片设置于所述第二段远离所述第一段的一端。
  10. 根据权利要求9所述的LED汽车大灯，其特征在于，所述第一段和第二段通过一套筒螺纹连接。
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JP6014253B2 (ja) 2016-10-25

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