WO2012012935A1 - Led光源的散热装置及led光源 - Google Patents

Led光源的散热装置及led光源 Download PDF

Info

Publication number
WO2012012935A1
WO2012012935A1 PCT/CN2010/075493 CN2010075493W WO2012012935A1 WO 2012012935 A1 WO2012012935 A1 WO 2012012935A1 CN 2010075493 W CN2010075493 W CN 2010075493W WO 2012012935 A1 WO2012012935 A1 WO 2012012935A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
cup
light source
wall
led light
Prior art date
Application number
PCT/CN2010/075493
Other languages
English (en)
French (fr)
Inventor
冯林
Original Assignee
Feng Lin
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 Feng Lin filed Critical Feng Lin
Priority to PCT/CN2010/075493 priority Critical patent/WO2012012935A1/zh
Priority to CN201110178185.1A priority patent/CN102330960B/zh
Publication of WO2012012935A1 publication Critical patent/WO2012012935A1/zh

Links

Classifications

    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/505—Cooling arrangements characterised by the adaptation for cooling of specific components of reflectors
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • 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
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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 invention belongs to the technical field of heat sink parts, and relates to a heat sink of a small-sized high-power LED light source (for example, a high-power MR16 LED spotlight) and an LED light source having the heat sink.
  • a small-sized high-power LED light source for example, a high-power MR16 LED spotlight
  • the LED light source is a cold light source, it will generate a certain amount of heat when it is energized. When the heat cannot be dissipated in time, the temperature of the LED light source will gradually increase, and the LED (Light Emitting Diode) will work stably.
  • the temperature range is -40 ° C ⁇ 80 ° C, if the heat can not be effectively emitted, it will greatly affect the product performance and service life of the LED light source.
  • the MR16 LED spotlight is a small-sized light source with a multi-faceted reflector.
  • the low-power MR16 LED spotlight generates less heat, so there is no need to consider the heat dissipation of the LED spotlight. It is reflected by the ordinary back-smooth MR16 LED spotlight.
  • the cover can satisfy its heat dissipation function.
  • With the increasing power of the MR16 LED spotlight its heat generation is also increasing. Under the condition of the same size, the surface temperature of the LED spotlight is gradually increasing, when the temperature rises above its working temperature. At the same time, it will affect the working stability and service life of the LED spotlight. At this time, it is necessary to consider the heat problem of the LED spotlight.
  • the conventional method is to provide a metal heat sink, a metal heat sink and a horn reflector on the back of the reflector.
  • the back side is sealed by a thermal silica gel or directly connected to the metal heat sink and the horn-shaped reflector.
  • the good heat dissipation effect is achieved by the good heat dissipation performance of the metal heat sink, and the heat dissipation surface area of the metal heat sink is increased to increase the heat dissipation effect.
  • the main development direction is to set the metal heat sink into a plurality of thin fins; increase the surface area of the fins; use copper or aluminum with better heat dissipation properties as the heat dissipation material.
  • 095220939 discloses an MR16 spotlight, comprising: a lamp cup having a flared shape and including a reduced end and an enlarged end, the enlarged end and recessed with a receiving groove; a base, the set is disposed at the reduced end of the lamp cup, the base includes two power contacts; an LED light source is disposed in the receiving recess of the lamp cup; a light source driving circuit board, the group The light source drives the circuit board and is electrically connected to the LED light source and the two power contacts of the base respectively; a lens is disposed in the capacitor cup The recess is disposed in the recess and located above the LED light source; and a lamp cover is attached to the enlarged end of the lamp cup.
  • the lamp cover is made of a metal material and includes a plurality of heat dissipating fins.
  • the lamp cover includes a cover body and a cover bottom.
  • the cover body is simultaneously used as a reflection cover, and the cover bottom is used for sealing the LED light source in the cover body. in.
  • a heat sink ie, a spotlight
  • a mirror ie, a reflector
  • lampshade a cylindrical heat sink.
  • the mirror is located in the recessed space of the heat sink, and a plurality of fins are disposed on the periphery of the heat sink, and the fin and the chamber formed at the center thereof are integrally formed of a metal material.
  • the central cavity enclosed by the fins and the mirror is filled with a heat conductive material.
  • the fins are provided to achieve the purpose of heat dissipation.
  • the difference is only the size of the fins and the number of problems.
  • the power of the LED spotlights is increased to more than 6W, the diameter of the MR16 LED spotlights has been limited.
  • simply increasing the heat dissipation area of the fins cannot meet the heat dissipation requirement. This is because the heat dissipation of the fins radiates heat to the air through conduction and radiation.
  • the air around the fins is conductively heated, the hot air cannot be effectively dissipated, and the heat dissipation efficiency of the fins is greatly reduced. Conducive to the dissipation of heat.
  • the invention patent of US Patent Application No. US20050111234 discloses a heat sink for an LED lamp, as shown in Fig. 1, comprising a light source and a casing wrapped around the light source and similar in shape to the light source, and a ventilation is provided between the casing and the light source.
  • a cavity, connected to the ventilation cavity at a tail portion of the outer casing The vent hole is disposed at the head of the light source at the other vent of the venting cavity, and a fan driven by the motor is disposed at the tail of the outer casing.
  • the heat sink mainly relies on the fan power to extract the hot air, and then the cold air fills into the ventilation cavity to achieve the purpose of heat dissipation.
  • the purpose of the present invention is to solve the above technical problem, and to propose a new heat sink for the LED light source by using the principle of the chimney effect.
  • the heat sink of the present invention completely solves the small-sized high-power LED light source (such as the MR16 LED spotlight).
  • the heat dissipation problem has the characteristics of good heat dissipation, longevity, energy saving and environmental protection. Thanks to the new heat sink, the MR16 LED spotlight has a longer life span of more than 35,000 hours and a power of more than 20W, with a luminous efficiency of 205 lumens per watt.
  • a heat dissipating device for an LED light source comprising a cup body, the cup body is internally provided with a light emitting LED, the inner wall of the cup is used for reflecting light, and the outer wall of the cup body is used for heat dissipating, wherein the heat dissipating device further comprises a sleeve
  • a cover body disposed outside the cup body is provided with a cavity for ventilation between the inner wall of the cover body and the outer wall of the cup body, and a vent hole communicating with the cavity is formed at an upper portion and a lower portion of the cup body.
  • a vent is provided in the upper part and the lower part of the cup body, and the two vents communicate with the cavity, and the air in the cavity is expanded and heated by the outer wall of the cup, and flows out from the upper vent of the cup body, and the gas in the cavity
  • the cold air is replenished from the lower vent of the cup, so that the cold air enters the cavity from the lower part of the cup and takes away a certain amount of heat, and then the hot air flows out from the upper part of the cup, with the hot air Outflow
  • cold air is continuously replenished, cold air comes in and is heated to continue to flow out, so that the airflow is so reciprocating Continuously flowing from the lower vent of the cup to the upper vent of the cup, taking away a part of the heat of the outer wall of the cup during the flow, and playing the role of "chimney effect".
  • the principle of "chimney effect" heat dissipation is to accelerate the air flow by the power generated by the rising of hot air, and accelerate the heat dissipation by speeding up the air
  • the cavity for ventilating may be an integral cavity surrounded by the inner wall of the heat dissipation cover and the outer wall of the reflector, and the cavity enclosed by the inner wall of the heat dissipation cover and the outer wall of the reflector may be subdivided into several Capillary channels, each capillary channel is a small cavity.
  • the pipe body is provided with a pipe or a cavity for allowing the air to flow upward, and the air flows from the lower portion of the cup body to the upper portion of the cup body, so the shape of the vent hole at the lower portion of the cup body and the vent port of the upper portion
  • the heat sink further includes a motorless fan fan, the fan being mounted at the vent through a fan bearing bracket for accelerating the flow of air.
  • the turbo fan After the turbo fan is disposed at the vent position, although the turbo fan does not have a motor to rotate, the turbo fan rotates under the power of the hot air rising, and the rotating fan simultaneously functions as a wind pump. Accelerates the flow of air, further accelerating the "chimney effect".
  • the invention converts the heat energy emitted by the illuminating LED into the kinetic energy of the fan rotation after the vent is provided with the turbo fan, and accelerates the emission and transfer of the heat energy through the conversion of the energy.
  • the fan can be arranged in a variety of ways. As long as it is arranged in the direction of the airflow, the airflow can drive the fan to rotate, and the rotating J3 ⁇ 4 fan can drive the air to accelerate.
  • the airflow can drive the fan to rotate, and the rotating J3 ⁇ 4 fan can drive the air to accelerate.
  • a person skilled in the art can also think of many variations and modifications in accordance with the embodiments of the present invention and its principles, but this does not affect the scope of the present invention.
  • the cup is detachably coupled to the cover.
  • the detachable connection manner is various, such as snapping, screwing or screwing, and the like.
  • the lower portion of the cup is detachably coupled to the lower portion of the cover.
  • the lower portion of the cup body is fixedly connected to the lower portion of the cover body, and a plurality of vent holes are provided around the lower portion of the cover body, and a vent hole is provided at the top end of the upper portion of the cover body.
  • the lower portion of the cup is detachably coupled to a lower portion of the cover, and the fan is disposed at a vent at an upper portion of the cover.
  • a lower portion of the cup body is fixedly connected to the lower portion of the cover body, a plurality of vent holes are disposed around the lower portion of the cover body, a vent hole is disposed at an upper end of the cover body, and the fan is erected through the fan bearing bracket. Below the top vent of the upper part of the cover.
  • the bearing bracket of the fan includes at least three arcuate bracket supporting legs, one end of the bracket supporting leg is connected to the fan bearing, and the other end of the bracket supporting leg abuts against the outer wall of the cup body or/and the inner wall of the cover body, the fan bearing
  • the center is provided with a through hole.
  • a plurality of heat dissipation fins are disposed on the outer wall of the cup.
  • the heat dissipation fin abuts against an inner wall of the cover.
  • the cavity between the cup and the cover is subdivided into a plurality of pipes, and the air can be heated more quickly from the pipe, not only very Good heat absorption If it has a larger rising force, it will dissipate heat more quickly.
  • the heat dissipation fins are spirally distributed around the outer wall of the cup.
  • the pipe becomes spiral, and the length of the pipe through which the air flows is longer, which has a good heat absorption effect, so that the heat dissipation effect is better.
  • the cover has a length of 26 mm to 120 mm.
  • An LED light source comprising a light-emitting LED, a power supply device for driving the LED, and a heat sink
  • the heat sink comprises a cup body, the cup body is internally provided with a light-emitting LED, the inner wall of the cup is used for reflecting light, and the outer wall of the cup body
  • the heat dissipating device further includes a cover sleeve sleeved on the outside of the cup body, and a cavity for ventilation is disposed between the inner wall of the cover body and the outer wall of the cup body, and the cup body is located The upper and lower portions open a vent that communicates with the cavity.
  • the heat sink further includes a fanless motor, and the fan is erected at the vent through a fan bearing bracket for accelerating the flow of air.
  • the cup is detachably coupled to the cover.
  • a plurality of heat dissipation fins are disposed around the outer wall of the cover.
  • the heat sink of the LED light source further includes a head cover that is screwed to the outlet of the head of the cup body, a light transmissive plate is disposed in a middle portion of the head cover, and a folded edge is disposed around the head cover, the folded edge Abutting the bottom end of the cover.
  • the cover has a length of 26 mm to 120 mm.
  • Figure 1 is a perspective exploded view of the present invention.
  • the invention relates to a heat dissipation device for a small-sized high-power LED light source, in the embodiment, MR16
  • the LED spotlight is taken as an example to illustrate and explain the heat sink.
  • a heat dissipating device for an MR16 LED spotlight includes a horn-shaped cup body 1 and a cover body connected to the outside of the cup body 1 and fixedly connected with the bell mouth 13 of the cup body. 2 and a head cover 3 fixedly connected to the bell mouth 13 of the cup body 1, the head cover 3 is fixedly connected with the bell mouth 13 of the cup body 1, and the head cover 3 is provided with a light-transmitting plate at the center 31, for transmitting light and sealing the LED, the periphery of the head cover 3 is provided with a flange 32, and the flange 32 is in contact with the cover 2.
  • the inner wall 11 of the horn cup 1 is a smooth mirror surface for reflecting LED light
  • the outer wall 12 is a heat dissipating surface made of a metal material, and the metal material is an aluminum alloy.
  • a plurality of heat dissipating fins 121 are disposed around the outer wall 12 of the cup body 1, and the heat dissipating fins 121 are vertically and evenly arranged along the bell mouth 13 to the horn tail 14 of the cup body 1.
  • the inner side of the bell mouth 13 of the cup body 1 is provided with a body thread (not shown), and the outer side is provided with a cup outer thread 131.
  • the internal thread of the cup body 1 is matched with the thread 33 of the head cover 3. connection.
  • the horn 14 of the cup body 1 is provided with a circular opening for mounting an LED and a power supply device for driving the LED to operate.
  • the power supply device tail 8 for driving the LED to work draws two pins through which the two pins are A power adapter is connected, and the power adapter outputs a DC low voltage current.
  • the cover 2 is a cavity made of a metal material, and the metal material is an aluminum alloy.
  • the inner side of the one end 21 of the head cover is provided with a thread inside the cover body (not shown), and the cup body is screwed and fixedly connected with the outer diameter thread 131 of the cup body through the inner body thread.
  • the inner wall 22 of the cover body 2 has a flared shape for engaging the tapered horn shape of the cup body 1.
  • a top end vent 25 is provided at a top end of the cover body 2; an outer wall 23 of the cover body 2 It is cylindrical and is provided with a plurality of heat dissipation fins 231 which are axially and evenly arranged.
  • a plurality of circular apertures 24 are disposed in the vicinity of the end 21 of the cylindrical cavity adjacent to the head cover, and the circular apertures extend through the cover 2
  • the inner and outer walls are disposed, and the circular aperture is disposed between the two heat dissipation fins 231.
  • a cavity is formed between the inner wall 22 of the cover 2 and the outer wall 12 of the cup, and the cavity is a ventilation passage.
  • the two ports of the venting passage are respectively a circular small hole 24 provided in the cover body 2 and a top end venting opening 25 on the upper portion of the cover body 2.
  • the working principle of this embodiment is that when the LED spotlight is working, heat is generated, and the heat is transmitted to the fins on the outer wall of the cup, so that the fins on the outer wall of the cup are heated, and the fins are heated to heat the surrounding air, hot air.
  • the cold air flowing out from the top vent of the cover is replenished from the circular hole in the lower part of the cover, thus forming a structural model of the "chimney effect", thereby accelerating the convection of the air, so that the heat dissipation effect is better than without the cup
  • the body jacket is much better.
  • the length of the cover is 26 cm, and the longer the length, the more obvious the “chimney effect” and the better the heat dissipation effect.
  • connection between the cover and the cup into a snap-fit or a screw-on connection.
  • connections are all detachable for the purpose of mounting the cover, especially when the length of the cover exceeds the cup.
  • the length of the cup body is inside the cover.
  • the cover is provided as a flared or conical cavity as long as it is ensured that a vent is provided at both ends of the cavity and a venting passage is formed in the cavity. It is also possible to make some deformations to the vent, which can be made into a circle, a ring, a square, a grid, a pane, and the like.
  • the heat dissipating fins in a spiral shape which rises around the cup body, and the length of the air duct through which the air flows increases, and the heat absorbing effect is better.
  • the heat dissipating device of the present invention further includes a motor-driven turbo fan 4, which is disposed at the top end vent 25 of the cover 2, as shown in FIG. It is located below the horizontal plane of the vent 25 for evacuating the air in the cavity when the turbofan 4 rotates.
  • the fan fan 4 rotates around a bearing 5 disposed at a center of the vent.
  • the bearing 5 is fixedly coupled to a bearing bracket 6 .
  • the bearing bracket is fixedly connected with three arcuate bracket supporting legs 61 . One end of the supporting leg 61 is fixedly connected
  • the bearing 5 has the other end of the support leg 61 abutting against the inner wall of the cover.
  • the bearing 5 is centrally provided with a circular through hole 51 for accommodating the outer casing 8 of the power supply unit at the tail of the cup 1 and the stitches, and since the outer casing 8 of the power supply unit of the rear end of the MR16 type is a square body, A gap between the circular through hole and the outer casing of the power supply device is eliminated, and a trapezoidal sleeve 7 is disposed on the square outer casing of the power supply device, and the inner wall 71 of the sleeve 7 is square, and is used for squares with the power supply device.
  • the outer casing abuts and the outer wall 72 is circular for abutting against the center of the bearing 5.
  • the heat dissipation principle of the embodiment is that the fan fan is provided, and the fan is rotated by the rising power of the hot air, and the rotating fan has the function of exhausting, further accelerating the flow of hot air from the cavity, thereby accelerating heat dissipation, and the turbo fan is further accelerated.
  • the speed of the o is proportional to the temperature of the outer wall of the cup. The higher the temperature of the outer wall of the cup, the faster the turbine fan turns, and the faster the turbine fan turns, the more the exhaust of the cavity can be accelerated, the better the cooling effect, which makes the fan have an adjustment
  • the effect of the external wall of the cup and the external temperature of the LED makes the operating temperature of the LED constant, which can extend the working life of the LED.
  • the fan can be disposed at the bell mouth of the cup body, or can be disposed on the cup body.
  • the fan may be sleeved on the cup or connected to the cover by a bracket.
  • the present invention also provides an LED light source, the LED light source comprising a light emitting LED and a power supply device for driving the LED, and a casing for the power supply device for packaging the power supply device, wherein the LED light source further comprises the above embodiment Heat sink.
  • the heat dissipating effect is greatly enhanced, the maximum operating power is increased, and the luminous efficiency is also improved.
  • the LED light source has a diameter of 2 inches, and its working power is up to ⁇ , and the luminous efficiency is up to 205 lm/W.

Description

LED光源的散热装置及 LED光源
【技术领域】
本发明属于散热器件技术领域， 涉及一种小尺寸大功率 LED光源 （例如大 功率 MR16 LED射灯） 的散热装置以及具有该散热装置的 LED光源。
【背景技术】
LED 光源虽然是冷光源， 但是其通电工作时还会产生一定的热量， 而这些 热量无法及时的散发出去时， 则会使 LED光源的温度逐渐升高， 而 LED (发光 二极管） 的稳定工作的温度范围为 -40°C~80°C， 热量不能有效的散发出去的话， 则会大大影响 LED光源的产品性能和使用寿命。
MR16 LED 射灯是一种小尺寸的带多面反射罩的光源， 低功率的 MR16 LED射灯发热量比较小， 所以无需考虑 LED射灯的散热问题， 用普通的背面光 滑的 MR16 LED射灯反射罩即可满足其散热功能。而随着 MR16 LED射灯的功 率不断增加， 其发热量也不断增加， 在其尺寸大小不变的情况下， LED射灯的 表面温度也在逐渐升高， 当温度升高高于其工作温度时， 则会影响 LED射灯工 作稳定性和使用寿命， 这个时候就需要考虑 LED射灯散热问题， 目前传统的做 法是， 在反射罩的背面设置金属散热片， 金属散热片和喇叭形反射罩背面通过 导热硅胶密封连接或者直接将金属散热片和喇叭形反射罩做成一个整体， 通过 金属散热片良好的散热性能达到很好的散热效果， 增大金属散热片的散热表面 积即可增加散热效果， 其主要发展方向在于， 将金属散热片设置成多个很薄的 鳍片； 增大鳍片的表面积； 采用散热性能比较好的铜或铝作为散热材料等。 如申请号为 095220939的台湾专利公开了一种 MR16射灯， 包括： 一灯杯， 系呈喇叭状并包括一缩小端、 及一扩大端， 该扩大端并凹设有一容置凹槽； 一 底座， 系组设于该灯杯之该缩小端， 该底座并包括二电源接点； 一发光二极管 光源， 系组设于该灯杯之该容置凹槽内； 一光源驱动电路板， 系组设于该灯杯 之该容置凹槽内， 该光源驱动电路板并分别电连接至该发光二极管光源、 及该 底座之该二电源接点； 一透镜， 系组设于该灯杯之该容置凹槽内、 并位于该发 光二极管光源上方； 以及一灯罩， 系盖合于该灯杯之该扩大端。 所述灯罩采用 金属材料制成， 且包括带有多数个散热鳍片， 灯罩包括罩体和罩底， 所述罩体 同时作为反射罩使用， 所述罩底用于将 LED光源封在罩体中。
又如专利号为 CN200940816Y中国实用新型专利公开了一种 LED投射灯
(即射灯） 的散热装置， 其包括反射镜 （即反射罩）、 灯罩和筒状的散热体。 反 射镜位于散热体的凹陷空间内， 多个鳍片设置在散热体的外围， 鳍片与形成在 其中央的腔室采用金属材料形成一个整体。 为了提供更好的散热效果， 在四周 鳍片以及反射镜围成的中央腔室内填充导热物质。
在上述专利中都是通过设置鳍片来达到散热的目的， 所不同的只是鳍片的 大小以及多少的问题， 当 LED射灯的功率增加到 6W以上时，在 MR16 LED射 灯直径已经受限制的情况下， 仅靠增大鳍片的散热面积已经不能满足散热的需 要。 这是因为， 鳍片散热是通过传导和辐射的方式向空气中散发热量， 当鳍片 周围的空气被传导加热以后， 热空气不能有效的散发出去， 则鳍片散热的效能 将大大降低， 不利于热量的散发。
美国专利申请号为 US20050111234的发明专利公开了一种 LED灯的散热 装置， 如图 1 所示， 包括光源以及包裹在光源外并与光源外形相近似的外壳， 在外壳和光源之间设置有通气空腔， 在所述外壳的尾部设置有与通气空腔连通 的通气孔， 在所述通气空腔的另一通气口设置在光源的头部， 在所述外壳的尾 部设置有一被电机带动的风扇。 该散热装置主要依靠风扇动力将热空气抽出， 然后冷空气填补进通气空腔， 达到散热的目的。
如果不采用动力驱动风扇旋转， 然后风扇吹动空气加速空气流动散热， 则 大功率 LED灯的散热问题一直是业界非常难以解决的一个难题。
【发明内容】
本发明的目的就是为了解决上述技术问题， 利用烟囱效应的原理提出了一 种新的 LED光源的散热装置，本发明的散热装置完全解决了小尺寸大功率 LED 光源 （如 MR16 LED射灯） 的散热问题， 具有散热效果好， 长寿、 节能、 环保 等特点。 由于采用了新的散热装置， MR16 LED射灯的使用寿命更长， 达 35000 小时以上， 功率可达 20W以上， 其发光效率可达 205流明 /瓦。
本发明的具体技术方案如下：
一种 LED光源的散热装置， 包括杯体， 所述杯体内部设置有发光 LED, 该 杯体内壁用于反光， 该杯体的外壁用于散热， 其特征在于， 所述散热装置还包 括套设于所述杯体外的罩体， 所述罩体内壁和杯体外壁之间设置有用于通气的 空腔， 位于所述杯体的上部和下部开设与该空腔连通的通气口。
在杯体的上部和下部设置通气口， 并且两个通气口与空腔连通， 空腔内的 空气被杯体外壁加热后会膨胀上升， 从杯体的上部通气口流出， 空腔内的气体 减少之后， 冷空气从杯体的下部通气口补充， 如此， 则冷空气从杯体的下部进 入空腔带走一定的热量后， 变成热空气从杯体的上部流出， 随着热空气的流出， 冷空气不断补充进来， 冷空气进来后被加热继续流出， 这样如此往复， 则气流 不断的从杯体的下部通气口流到所述杯体的上部通气口， 在流动的过程中带走 杯体外壁的一部分热量， 起到 "烟囱效应"散热的作用。 "烟囱效应"散热的原 理是利用热空气上升形成的动力加速空气流动， 通过加快空气对流来加快散热 的目的。
所述用于通气的空腔可为所述散热罩内壁和反射罩外壁所围成的一整体空 腔， 也可将所述散热罩内壁和反射罩外壁围成的空腔细分成若干个毛细管道， 每一个毛细管道为一小空腔。
所以依据上述原理， 只要在所述杯体外设置一个罩体， 并且让冷空气从所 述杯体的下部通气口进入从所述杯体的上部通气口流出， 所以只要保证所述罩 体和所述杯体之间设置有可以让空气向上流动的管道或者空腔即可， 并且空气 是从杯体的下部向杯体的上部流动的， 所以杯体下部的通气口和上部的通气口 的形状和设置的位置都可以有很多种， 本领域的普通技术人员可以很轻松的根 据本发明的实施例以及本发明的原理想出很多种变形和改进， 但是这并不影响 本发明的保护范围。
所述散热装置还包括无马达带动的涡轮风扇， 该风扇通过风扇轴承支架架 设在所述的通气口处， 用于加快空气的流动。
在所述通气口位置处设置有涡轮风扇后， 虽然所述涡轮风扇没有马达带动 旋转， 但是所述的涡轮风扇在可以热空气上升的动力推动下旋转， 旋转的风扇 同时又起到抽风的作用， 加速带动空气的流出， 从而进一步加速 "烟囱效应" 散热。 本发明在通风口设置了涡轮风扇之后， 将发光 LED发出的热能转变成风 扇转动的动能， 通过能量的转化来加速热能的散发和转移。
所以风扇的设置方式可以有很多种， 只要设置在气流流动的方向上， 能够 使气流带动风扇旋转， 同时旋转的 J¾扇能够带动空气加速流动即可。 本领域的 普通技术人员同样可以根据本发明的实施例及其原理想到很多种变形和改进， 但是这也不影响本发明的保护范围。
所述杯体与所述罩体可拆卸连接。
所述可拆卸连接方式为多种， 如卡接、 通过螺丝连接或者通过螺紋连接等 等。 所述杯体和所述罩体实现可拆卸连接后， 普通的消费者可以直接购买罩体 套设在普通的 LED光源的杯体上即可构造一个 "烟囱效应"散热的模型， 起到 加速散热的作用。
所述杯体的下部与所述罩体的下部可拆卸连接。
所述杯体的下部与所述罩体的下部通过螺紋固定连接， 所述罩体下部四周 设置有多个通气孔， 所述罩体上部顶端设置有通气口。
所述杯体的下部与所述罩体的下部可拆卸连接， 所述风扇设置在罩体上部 的通气口处。
所述杯体的下部与所述罩体的下部通过螺紋固定连接， 所述罩体下部四周 设置有多个通气孔， 所述罩体上部顶端设置有通气口， 所述风扇通过风扇轴承 支架架设在该罩体上部顶端通气口的下方。
该风扇的轴承支架包括至少三个弓形支架支撑脚， 所述支架支撑脚的一端 连接风扇轴承， 该支架支撑脚的另一端与杯体的外壁或 /和罩体内壁抵接， 所述 风扇轴承的中心设置有通孔。
所述杯体外壁上设置有多个散热鳍片。
所述散热鳍片与所述罩体的内壁抵接。
当所述罩体的内壁与所述散热鳍片抵接之后， 杯体和罩体之间的空腔被细 分成若干个管道， 空气从管道经过能更快速的被加热， 不仅起到很好的吸热效 果， 而且具有更大的上升推动力， 散热更快。
所述散热鳍片为螺旋形分布在所述杯体外壁的周围。
将鳍片设置成螺旋形后， 则所述管道则成为螺旋形， 则空气流经的管道长 度更长， 则具有很好的吸热效果， 所以散热效果更好。
所述的罩体的长度为 26mm~120mm。
一种 LED光源， 包括发光 LED、 驱动 LED工作的电源装置以及散热装置， 所述散热装置包括杯体， 所述杯体内部设置有发光 LED, 该杯体内壁用于反光， 该杯体的外壁用于散热， 其特征在于， 所述散热装置还包括套设于所述杯体外 的罩体， 所述罩体内壁和杯体外壁之间设置有用于通气的空腔， 位于所述杯体 的上部和下部开设与该空腔连通的通气口。
所述散热装置还包括无马达带动的风扇， 该风扇通过风扇轴承支架架设在 所述的通气口处， 用于加快空气的流动。
所述杯体与所述罩体可拆卸连接。
所述罩体的外壁周围设置有多个散热鳍片。
所述 LED 光源的散热装置还包括通过螺紋连接于所述杯体头部出口的头 盖， 所述头盖中部设置有透光板， 所述的头盖的四周设置有折边， 该折边与所 述罩体底端抵接。
所述的罩体的长度为 26mm~120mm。
本发明的有益的技术效果在于：
1 . 通过在所述杯体上套设罩体， 构成一个 "烟図效应" 的散热结构， 从而能够加快所述杯体外壁的散热， 起到很好的散热效果。
2. 在所述杯体上部或下部的通风口处设置涡轮风扇， 能够通过涡轮风 扇的旋转加速所述空腔内的空气流动， 加快所述杯体外壁的散热。 同时所述涡轮风扇的转动速度与所述杯体外壁的温度成正比， 所述 杯体外壁的温度越高， 则涡轮风扇转的越快， 而同时涡轮风扇转的 越快， 则越能加速所述空腔的排气， 则冷却效果越好， 这使得风扇 具有调节所述杯体外壁以及发光 LED外部温度的效果， 使得 LED 的工作温度恒定， 能够延长 LED的工作寿命。
3. 设置所述杯体与所述罩体可拆卸连接后， 能够很方便的根据不同的 发光功率选择不同的罩体长度， 罩体越长， 则本发明的散热装置的 散热效果越好。
【说明书附图】
图 1 为本发明的立体分解示意图。 其中， 1、 杯体； 11、 杯体内壁； 12、 杯体外壁； 121、 杯体的散热鳍片； 13、 喇叭口； 131、 杯体外螺紋； 14、 喇叭尾； 2、 散热罩； 21、 圆筒形腔体靠近所 述头盖的一端； 22、 散罩体内壁； 23、 罩体外壁； 231、 罩体的散热鳍片； 24、 圆形小孔； 25、 顶端通气口； 3、 头盖； 31、 透光板； 32、 折边； 33、 螺紋； 4、 涡轮风扇； 5、 轴承； 51、 圆形通孔； 6、 轴承支架； 61、 支架支撑脚； 7、 套管； 71、 套管内壁； 72、 套管外壁。
【具体实施方式】
本发明涉及一种小尺寸大功率 LED光源的散热装置， 在实施例中以 MR16 LED射灯为例对该散热装置做阐述和说明。
实施例 1
如图 1所示， 一种 MR16 LED射灯的散热装置， 包括一喇叭形的杯体 1、 一套接于所述杯体 1外并与所述杯体的喇叭口 13固定连接的罩体 2以及一固定 连接于所述杯体 1 的喇叭口 13的头盖 3， 该头盖 3与所述杯体 1 的喇叭口 13 通过螺紋固定连接， 所述头盖 3 中央设置有透光板 31， 用于透射光线和密封 LED, 所述的头盖 3的周围设置有折边 32， 所述折边 32与所述罩体 2接触。
所述喇叭形杯体 1 的内壁 11为用于反射 LED发光的光滑镜面，外壁 12为 金属材料制成的散热面， 所述金属材料为铝合金。在所述杯体 1 的外壁 12周围 设置有多个散热鳍片 121， 所述散热鳍片 121 沿杯体 1 的喇叭口 13至喇叭尾 14径向竖直均匀排列。 所述杯体 1 的喇叭口 13的内侧设置有杯体内螺紋（图 中未示）， 外侧设置有杯体外螺紋 131， 所述杯体 1 的内螺紋与所述头盖 3的螺 紋 33配合固定连接。所述杯体 1 的喇叭尾 14开设有圆形的开口，用于安设 LED 以及连接驱动 LED工作的电源装置， 所述驱动 LED工作的电源装置尾部 8引 出两针脚， 通过所述两针脚与电源适配器连接， 所述电源适配器输出直流低压 电流。
所述罩体 2为金属材料制成的腔体， 所述金属材料为铝合金。 所述圆筒形 腔体靠近所述头盖的一端 21 的内侧设置有罩体内螺紋 （图中未示）， 所述杯体 通过罩体内螺紋与所述杯体外螺紋 131螺紋配合固定连接。 所述罩体 2的内壁 22为喇叭形， 用于配合所述杯体 1 的逐渐缩小的喇叭外形， 在所述罩体 2的顶 端设置有顶端通气口 25; 所述罩体 2的外壁 23为圆柱形， 并设置有多个散热 鳍片 231， 所述散热鳍片 231 为轴向垂直均匀排列。 在所述圆筒形腔体靠近所 述头盖的一端 21 附近设置有多个圆 ^小孔 24，所述圆形小孔贯穿于所述罩体 2 的内外两壁， 并且所述圆形小孔设置在两散热鳍片 231之间。
当所述罩体 2套接于所述杯体 1外， 并通过螺紋连接时， 所述罩体 2内壁 22和杯体外壁 12之间形成有空腔， 这一空腔即为通气通道， 所述通气通道的 两端口分别为设置于所述罩体 2上的圆形小孔 24和罩体 2上部的顶端通气口 25。
本实施例的工作原理在于， 当 LED射灯工作时， 会产生热量， 热量传导给 杯体外壁的鳍片， 使杯体外壁的鳍片发热， 鳍片受热后使周围空气变热， 热空 气从所示罩体的顶端通气口流出冷空气从罩体下部的圆形小孔补充进去， 这样 构成一个 "烟囱效应" 的结构模型， 从而加速了空气的对流， 使得散热效果比 没有所述杯体外套设罩体要好很多。
所述罩体的长度为 26cm， 长度越长， 则 "烟囱效应"越明显， 散热效果越 好。
利用 "烟囱效应" 的原理， 我们可以很简单的对上述实施例作若干变形， 如：
将罩体和杯体的连接方式变换成卡接或者通过螺丝固定连接， 这些连接方 式均为可拆卸连接， 目的是为了方面所述罩体的安装， 尤其是当罩体的长度超 出了杯体的长度， 所述杯体的针脚在罩体内部时。
将罩体设置成喇叭形或者圆锥形空腔， 只要保证在空腔的两端设置通气口， 并且在空腔中形成通气通道即可。 还可以对通气口作若干变形， 可做成圆形、 环形、 方形、 栅格形、 窗格形等。
同时还可以根据 "烟囱效应" 以及 "峡谷效应" 的原理对上述实施例作若 干改进， 如： 增加罩体两端的通气孔的个数或者大小， 将罩体的内壁和杯体外壁的散热 鳍片抵接， 使罩体和杯体之间形成多个垂直的通气通道， 则空气流经杯体外壁 相邻的两个散热鳍片构成的空气管道之后， 被加热的更充分， 温度上升更快， 同时由于管道孔径变小， 则空气膨胀力越大， 上升的动力越大， 流出的速度更 快， 则散热效果更好。
也可以将所述散热鳍片设置成绕杯体上升的螺旋形， 则空气流经的空气管 道长度增加， 吸热效果更好。
实施例 2
在上述实施例 1 的基础之上， 本发明的散热装置还包括无马达带动的涡轮 风扇 4， 如图 1所示， 所述涡轮风扇 4设置在所述罩体 2的顶端通气口 25处， 且位于该通气口 25的水平面以下，用于在涡轮风扇 4转动时抽走空腔内的空气。 所述涡轮风扇 4绕设置在通风口中心的轴承 5旋转， 该轴承 5固定连接有一轴 承支架 6， 所述轴承支架固定连接有三个弓形支架支撑脚 61， 所述支撑脚 61 的 一端固定连接有轴承 5， 该支撑脚 61 的另一端与罩体内壁抵接。 所述轴承 5中 心设置有圆形通孔 51， 用于使杯体 1尾部的电源装置的外壳 8以及针脚穿过， 而由于 MR16型号的射灯尾部的电源装置的外壳 8为方体， 为了消除该圆形通 孔与所述电源装置外壳之间的缝隙， 在所述电源装置的方形外壳外套设一梯形 套管 7， 该套管 7的内壁 71为方形， 用于与电源装置的方形外壳抵接， 外壁 72 为圆形， 用于与所述轴承 5中心抵接。
本实施例的散热原理是通过设置涡轮风扇， 通过热空气的上升动力推动风 扇旋转， 而旋转的风扇具有抽风的功能， 进一步加快热空气从空腔中流出， 从 而加快散热， 另外所述涡轮风扇的 o动速度与所述杯体外壁的温度成正比， 所 述杯体外壁的温度越高， 则涡轮风扇转的越快， 而同时涡轮风扇转的越快， 则 越能加速所述空腔的排气， 则冷却效果越好， 这使得风扇具有调节所述杯体外 壁以及发光 LED外部温度的效果， 使得 LED的工作温度恒定， 能够延长 LED 的工作寿命。 所以根据上述原理， 本领域的普通技术人员还可以对本实施例的 风扇的设置位置以及固定方法想出很多变形和改进， 例如风扇可以设置在杯体 的喇叭口处， 也可设置在杯体的喇叭尾处； 风扇可以套接在所述杯体上， 也可 通过支架连接在所述罩体上。 但是无论其怎么变形和改进， 只要风扇是设置在 通风口， 并且通过空气流动带动风扇旋转， 同时旋转的风扇又加速空气流动， 则其变形和改进在本发明的保护范围之内。
实施例 3
本发明还提供一种 LED光源， 所述 LED光源包括发光 LED以及驱动 LED 工作的电源装置以及封装所述电源装置的电源装置的外壳， 其特征在于， 所述 LED光源还包括如上实施例所述的散热装置。
所述 LED光源在使用了如上所述的散热装置之后， 散热效果大大加强， 使 其最大工作功率增加， 发光效率也得到提高。
例如在 MR16型号的标准 LED光源中， 所述 LED光源的直径为 2英寸， 其工作功率最高可达濯， 发光效率最高为 205流明 /瓦。
需要说明的是， 上述实施例只是对权力要求的支持和说明， 并不是对本发 明的保护范围的限制， 所以只要在本发明的构思范围内， 基于本发明的散热原 理对本发明做出的变形和改进都在本发明的保护范围之内。

Claims

权 利 要 求 书
1 . 一种 LED光源的散热装置， 包括杯体， 所述杯体内部设置有发光 LED, 该杯体内壁用于反光， 该杯体的外壁用于散热， 其特征在于， 所述散热装置还 包括套设于所述杯体外的罩体， 所述罩体内壁和杯体外壁之间设置有用于通气 的空腔， 位于所述杯体的上部和下部开设与该空腔连通的通气口。
2. 根据权利要求 1 所述的 LED光源的散热装置， 其特征在于， 所述散热 装置还包括无马达带动的涡轮风扇， 该风扇通过风扇轴承支架架设在所述的通 气口处， 用于加快空气的流动。
3. 根据权利要求 1 所述的 LED光源的散热装置， 其特征在于， 所述杯体 与所述罩体可拆卸连接。
4. 根据权利要求 2所述的 LED光源的散热装置， 其特征在于， 所述杯体 与所述罩体可拆卸连接。
5. 根据权利要求 3所述的 LED光源的散热装置， 其特征在于， 所述杯体 的下部与所述罩体的下部可拆卸连接。
6. 根据权利要求 5所述的 LED光源的散热装置， 其特征在于， 所述杯体 的下部与所述罩体的下部通过螺紋固定连接， 所述罩体下部四周设置有多个通 气孔， 所述罩体上部顶端设置有通气口。
7. 根据权利要求 4所述的 LED光源的散热装置， 其特征在于， 所述杯体 的下部与所述罩体的下部可拆卸连接， 所述风扇设置在罩体上部的通气口处。
8. 根据权利要求 7所述的 LED光源的散热装置， 其特征在于， 所述杯体 的下部与所述罩体的下部通过螺紋固定连接， 所述罩体下部四周设置有多个通 气孔， 所述罩体上部顶端设置有通气口， 所述风扇通过风扇轴承支架架设在该 罩体上部顶端通气口的下方。 权 利 要 求 书
9. 根据权利要求 8所述的 LED光源的散热装置， 其特征在于， 该风扇的 轴承支架包括至少三个弓形支架支撑脚， 所述支架支撑脚的一端连接风扇轴承， 该支架支撑脚的另一端与杯体的外壁或 /和罩体内壁抵接， 所述风扇轴承的中心 设置有通孔。
10. 根据权利要求 1 -9任一所述的 LED光源的散热装置， 其特征在于， 所 述杯体外壁上设置有多个散热鳍片。
11 . 根据权利要求 10所述的 LED光源的散热装置， 其特征在于， 所述散 热鳍片与所述罩体的内壁抵接。
12. 根据权利要求 11 所述的 LED光源的散热装置， 其特征在于， 所述散 热鳍片为螺旋形分布在所述杯体外壁的周围。
13. —种 LED光源， 包括发光 LED、 驱动 LED工作的电源装置以及散热 装置， 所述散热装置包括杯体， 所述杯体内部设置有发光 LED, 该杯体内壁用 于反光， 该杯体的外壁用于散热， 其特征在于， 所述散热装置还包括套设于所 述杯体外的罩体， 所述罩体内壁和杯体外壁之间设置有用于通气的空腔， 位于 所述杯体的上部和下部开设与该空腔连通的通气口。
14. 根据权利要求 13所述的 LED光源的散热装置， 其特征在于， 所述散 热装置还包括无马达带动的风扇， 该风扇通过风扇轴承支架架设在所述的通气 口处， 用于加快空气的流动。
15. 根据权利要求 13或 14所述的 LED光源的散热装置， 其特征在于， 所 述杯体与所述罩体可拆卸连接。
PCT/CN2010/075493 2010-07-27 2010-07-27 Led光源的散热装置及led光源 WO2012012935A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2010/075493 WO2012012935A1 (zh) 2010-07-27 2010-07-27 Led光源的散热装置及led光源
CN201110178185.1A CN102330960B (zh) 2010-07-27 2011-06-17 Led光源的散热装置及led光源

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2010/075493 WO2012012935A1 (zh) 2010-07-27 2010-07-27 Led光源的散热装置及led光源

Publications (1)

Publication Number Publication Date
WO2012012935A1 true WO2012012935A1 (zh) 2012-02-02

Family

ID=45529356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/075493 WO2012012935A1 (zh) 2010-07-27 2010-07-27 Led光源的散热装置及led光源

Country Status (1)

Country Link
WO (1) WO2012012935A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104633623A (zh) * 2014-12-24 2015-05-20 东莞市闻誉实业有限公司 Led灯散热器
CN104684342A (zh) * 2013-11-27 2015-06-03 英业达科技有限公司 散热装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2876552Y (zh) * 2005-09-16 2007-03-07 林志泽 Led灯具罩体散热结构
CN101368719A (zh) * 2007-08-13 2009-02-18 崇越电通股份有限公司 发光二极管灯具
CN201310855Y (zh) * 2008-12-10 2009-09-16 上海三思电子工程有限公司 散热灯座及led像素灯
WO2010022630A1 (zh) * 2008-09-05 2010-03-04 Wong Pun Led光源的散热装置及led光源
CN101672432A (zh) * 2008-09-11 2010-03-17 富准精密工业(深圳)有限公司 发光二极管灯具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2876552Y (zh) * 2005-09-16 2007-03-07 林志泽 Led灯具罩体散热结构
CN101368719A (zh) * 2007-08-13 2009-02-18 崇越电通股份有限公司 发光二极管灯具
WO2010022630A1 (zh) * 2008-09-05 2010-03-04 Wong Pun Led光源的散热装置及led光源
CN101672432A (zh) * 2008-09-11 2010-03-17 富准精密工业(深圳)有限公司 发光二极管灯具
CN201310855Y (zh) * 2008-12-10 2009-09-16 上海三思电子工程有限公司 散热灯座及led像素灯

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104684342A (zh) * 2013-11-27 2015-06-03 英业达科技有限公司 散热装置
CN104633623A (zh) * 2014-12-24 2015-05-20 东莞市闻誉实业有限公司 Led灯散热器
CN104633623B (zh) * 2014-12-24 2017-12-19 东莞市闻誉实业有限公司 Led灯散热器

Similar Documents

Publication Publication Date Title
WO2014021087A1 (ja) 照明装置
WO2010022630A1 (zh) Led光源的散热装置及led光源
CN201242130Y (zh) 一种散热节能灯具
TW200535372A (en) Led lamp heat sink
CN110513627B (zh) 一种led灯
CN104006308B (zh) 大功率led照明灯具
TWI408312B (zh) 燈具
CN102330960B (zh) Led光源的散热装置及led光源
WO2009135359A1 (zh) 用于替代反光杯形卤素灯泡的led灯泡
JP2011009210A (ja) 照明装置
TW201237317A (en) Lamp
JP6872626B2 (ja) Ｌｅｄ放熱構造及びそれを含むｌｅｄ照明器具
CN209856800U (zh) 一种具有散热通道的led灯
TW201038868A (en) Light emitting diode lamp
CN104019382B (zh) 旋风式散热led灯具
WO2012012935A1 (zh) Led光源的散热装置及led光源
JP2012252891A (ja) 照明装置
WO2017008200A1 (zh) 一种自动调温 led 高井灯
CN201242131Y (zh) 一种散热节能灯
CN210687958U (zh) 散热式led吸顶灯
CN211502707U (zh) 一种灯具电动调焦装置
TW200912187A (en) LED lamp with a heat sink
CN208871575U (zh) 一种led灯具的散热结构
TW201013106A (en) Light emitting diode lamp
CN218846065U (zh) 一种高光led射灯

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10855163

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 09/04/2013)

122 Ep: pct application non-entry in european phase

Ref document number: 10855163

Country of ref document: EP

Kind code of ref document: A1