WO2013075480A1 - 一种led灯 - Google Patents

一种led灯 Download PDF

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Publication number
WO2013075480A1
WO2013075480A1 PCT/CN2012/077124 CN2012077124W WO2013075480A1 WO 2013075480 A1 WO2013075480 A1 WO 2013075480A1 CN 2012077124 W CN2012077124 W CN 2012077124W WO 2013075480 A1 WO2013075480 A1 WO 2013075480A1
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WO
WIPO (PCT)
Prior art keywords
heat
lamp
lamp cup
gap
dissipating
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PCT/CN2012/077124
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English (en)
French (fr)
Inventor
沈锦祥
沈晖
陈方
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生迪光电科技股份有限公司
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Publication of WO2013075480A1 publication Critical patent/WO2013075480A1/zh

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    • 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
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/233—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
    • 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
    • F21V29/773—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 the planes containing the fins or blades having the direction of the light emitting axis

Definitions

  • the present invention relates to the field of LED lighting technology, and in particular to an LED lamp.
  • the high-power LED lighting lamp of the prior art generally adopts a hollow heat-dissipating lamp cup, and the lamp cup is provided with a base for fixing the LED light-emitting component, and the base separates the cavity of the heat-dissipating lamp cup into the LED light-emitting component receiving cavity and the driving.
  • the power supply accommodating cavity is sleeved in the driving power supply accommodating cavity, and the upper and lower ends of the driving power supply casing are closed, and the inner wall of the driving power supply casing is closely attached to the inner wall of the driving power receiving cavity, because the heat dissipating lamp cup itself
  • the heat of the LED light source has been carried, so the driving circuit board is in a high temperature environment in the heat dissipating lamp cup, and the heat is difficult to be effectively dissipated, which will affect the normal operation of the electronic components of the driving power source over a long period of time, thereby affecting the overall service life of the LED lighting lamp.
  • the present invention is directed to the above-mentioned deficiencies in the prior art, and provides an LED for dissipating heat from a driving power source.
  • the lamp reduces the temperature influence of the heat sink cup on the power supply, reduces the ambient temperature of the power supply, and prolongs the service life of the power supply.
  • the lamp comprises a heat-dissipating lamp cup and a driving power supply shell, wherein the heat-dissipating lamp cup has a hollow structure, and the heat-dissipating lamp cup is sleeved with the driving power supply shell, and between the driving power supply shell and the inner wall of the heat-dissipating lamp cup There is a gap, and the upper and lower portions of the gap are kept in communication with the outside air.
  • a receiving ring that abuts against the bottom of the heat dissipating lamp cup is fixed on the outer circumference of the driving power source housing, and a plurality of holes for keeping air flowing between the outside and the lower portion of the gap are provided in the receiving ring in the circumferential direction.
  • the receiving ring can not only support the heat-dissipating lamp cup, but also has a plurality of holes formed in the receiving ring, so that the lower part of the gap can be circulated through the hole to the outside air for heat dissipation.
  • a pedestal is arranged on the upper part of the heat dissipation lamp cup, and an LED is arranged on the pedestal a light-emitting assembly, wherein a plurality of through holes for connecting the outside to the upper portion of the gap are provided in the circumferential direction at the edge of the base, LED A gap is formed between the outer circumference of the light-emitting assembly and the inner wall of the heat-dissipating lamp cup to keep the through-hole and the outside air flowing.
  • the upper part of the gap passes through the through hole, the LED
  • the gap between the light-emitting component and the inner wall of the lamp cup circulates with the outside air to dissipate heat; thus, the upper and lower parts of the gap are circulated with the outside air, and a straight-down air flow layer is formed outside the driving power source, thereby not only avoiding the heat-dissipating cup pair
  • the influence of the driving power supply also effectively convects the driving power source to reduce the temperature of the power supply environment. 5%.
  • a plurality of pairs of LEDs are circumferentially protruded on the inner wall of the heat dissipation lamp cup above the susceptor
  • the limiting component of the light-emitting component is limited.
  • the setting of the limit ribs not only facilitates the installation of the LED lighting components, but also the LEDs.
  • the light-emitting component is limited so as not to block the through-holes at the edge of the base, thereby ensuring air circulation.
  • a convex rib for limiting the driving power supply housing is protruded circumferentially on the inner wall of the heat dissipation lamp cup below the pedestal, or a plurality of ribs are disposed on the side wall of the driving power supply housing.
  • the arrangement of the ribs not only limits the driving power supply housing, but also facilitates the installation thereof, and also leaves a gap between the housing and the inner wall of the lamp cup to form an air flow path.
  • a plurality of holes are formed in the side wall below the heat dissipation lamp cup to circumferentially keep the air gap therebetween, and the side wall above the heat dissipation lamp cup is circumferentially opened.
  • the heat dissipating lamp cup comprises a lamp cup body, and a plurality of heat dissipating fins are distributed circumferentially on the outer circumference of the lamp cup body, and the outer cover is wrapped around the heat dissipating fins, and the upper and lower ends of the outer cover and the lamp cup body are There is a circle of openings between them.
  • Conventional die-casting or extruded material heat-dissipating cups generally use simple strip-shaped heat-dissipating fins. Such a structure, the effective area of heat radiation is not equivalent to the actual external surface area, and only the actual external surface area is about 70% .
  • the outer cover in addition to retaining the heat dissipating fins, the outer cover is covered with a layer of outer cover; the effective radiation area of the heat sink is increased, and the inner wall and the outer fin of the heat dissipating lamp cup are more fully utilized. Formed by the through holes between the sheets The 'chimney' effect enhances the convection of the air. It is equivalent to strengthening radiation heat dissipation and natural convection heat dissipation. For LED heat dissipation to play a better role. It guarantees better life and light efficiency of LEDs.
  • the outer cover is composed of two parts of the upper cover and the lower cover.
  • the heat dissipating fins under the upper cover body are formed with at least two fastening portions, and the inner wall of the lower cover body is correspondingly formed with at least two fastening portions, the lower portion The fastening portion of the cover is connected to the fastening portion.
  • the upper cover body and the heat dissipation lamp cup are integrally die-casted by an aluminum alloy, and the lower cover body is made of a plastic material.
  • the invention leaves a gap between the driving power source housing and the inner wall of the lamp cup, and the upper and lower portions of the driving power supply housing are provided with holes for keeping the air gap between the air gap and the outside, so that the air gap layer forms an air flow layer and the air is formed. Entering can take away the heat generated by the driving power supply, reducing the ambient temperature of the power supply and ensuring its service life.
  • the arrangement of the above air flow layer not only dissipates heat to the driving power source, but also dissipates heat radiated to the inside of the heat dissipating lamp cup.
  • the through hole formed between the inner wall of the outer cover and the fin can also form an air flow path, which enhances the convection of the air to dissipate heat generated by the LED light source.
  • the two air flow channels inside and outside the lamp cup work synergistically, which greatly improves the LED
  • the heat dissipation effect of the lamp has an unexpected effect.
  • FIG. 1 is an exploded view of an LED lamp in an embodiment of the present invention
  • FIG. 2 is an exploded view of another direction of an LED lamp according to an embodiment of the present invention.
  • FIG. 3 is a schematic perspective structural view of an LED lamp according to an embodiment of the present invention.
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 5 is an enlarged view of a portion A of Figure 1;
  • Figure 6 is an enlarged view of a portion B of Figure 1;
  • Figure 7 is an enlarged view of a portion A of Figure 4.
  • Figure 8 is a perspective view showing the three-dimensional structure of the LED lamp in the other direction
  • FIG. 9 is a schematic structural view of an LED lamp in an embodiment
  • Figure 10 is a schematic structural view of Figure 9 in a bottom view
  • Figure 11 is a schematic structural view of the top view of Figure 9;
  • FIG. 12 is a schematic view showing the heat dissipation effect of the LED lamp in the embodiment.
  • Embodiment 1 An LED lamp of this embodiment, as shown in FIGS. 1 to 12, includes a heat dissipation lamp cup 1 and a driving power source housing 2
  • the heat dissipating lamp cup 1 has a hollow structure inside, and the heat dissipating lamp cup 1 is provided with a base 3, and the base 3 separates the heat dissipating lamp cup 1 into an LED light emitting component accommodating cavity 4 and a driving power receiving cavity 5 a rib 6 for limiting the driving power source housing 2 is circumferentially protruded on the inner wall of the driving power supply accommodating chamber 5, and the driving power source housing 2 is inserted in the driving power source accommodating chamber 5, and the power source housing is driven 2
  • the outer diameter is smaller than the inner diameter of the driving power supply accommodating chamber 5; as shown in Fig. 4, a plurality of gaps are left between the driving power source housing 2 and the inner wall of the heat dissipating lamp cup due to the presence of the ribs 6 .
  • a receiving ring 8 that is fastened to the bottom of the heat-dissipating lamp cup is fixed on the outer circumference, and a plurality of holes 9 for keeping the outside air and the lower portion of the gap 7 in the air are provided on the receiving ring 8 in the circumferential direction.
  • a plurality of through holes for connecting the outside to the upper portion of the gap 7 are provided in the circumferential direction at the edge of the susceptor 3.
  • a plurality of limiting ribs 11 for limiting the LED light-emitting components are protruded in the circumferential direction, as shown in FIG. 1, FIG. 3 and FIG. 4, the limiting ribs 11
  • the presence of a gap 12 between the outer periphery of the LED lighting assembly and the inner wall of the lamp cup to keep the through hole 10 in communication with the outside air is left.
  • the LED lighting assembly comprises a substrate 19 and a plastic ring 21 And the lens 22, a plurality of LED light sources 20 are fixed on the substrate 19, the plastic ring 21 is fixed on the substrate 19, and the lens 22 is stuck in the plastic ring 21.
  • the heat dissipation lamp cup 1 includes a lamp cup body 13 at the lamp cup body 13 A plurality of heat dissipating fins 14 are circumferentially distributed on the outer circumference, and a cover 15 is wrapped around the heat dissipating fins 14, and a ring opening 16 is left between the upper and lower ends of the outer cover 15 and the lamp cup body 13.
  • the cover 15 is composed of two parts of the upper cover body 17 and the lower cover body 18, wherein the upper cover body 17 and the heat dissipation lamp cup are integrally molded by aluminum alloy, and the lower cover body 18 is made of plastic material; 5 ⁇ map 7 shows that at least two fastening portions 23 are formed on the heat dissipating fins below the upper cover body 17, and the inner wall of the lower cover body 18 is correspondingly formed with at least two fastening portions 24 The fastening portion of the lower cover and the upper cover 17 The fastening portions are fastened together to connect the upper and lower cover assemblies as a whole.
  • the combination of the upper and lower covers allows the length of the through hole formed between the inner wall of the outer cover and the fin to greatly satisfy the effect of air convection heat dissipation.
  • the heat dissipation process of the LED lamp of the present invention is such that for the inner heat dissipation air flow path, the cold air is separated by the gap 12 and the through hole. 10 Enter into the gap 7 and move upwards to remove the heat generated by the driving power source and the LED light source through the hole 9 in the receiving ring 8; for the external cooling air flow path, the cold air is opened at one end of the lamp body. Entering into the through hole formed between the inner wall of the outer casing and the fin, the upward movement moves the heat generated by the heat sink cup through the opening 16 at the other end of the lamp body.
  • Internal and external two layers of cooling air flow channels work together, Enhance radiative heat dissipation and natural convection separately to achieve perfect heat dissipation.
  • the invention is suitable for structural design and application of various LED lamps, including PAR lamp series (PAR30, PAR38, etc.) and bulb lamp series (A60, A55, etc.) all LEDs with built-in power supply design.
  • PAR lamp series PAR30, PAR38, etc.
  • bulb lamp series A60, A55, etc.
  • Embodiment 2 This embodiment and embodiment 1 The difference is that the hole that keeps the air from flowing to the outside is disposed on the side wall of the heat-dissipating lamp cup, that is, a plurality of holes are provided in the circumferential direction on the side wall below the heat-dissipating lamp cup to keep the air gap between the gap and the outside.
  • the hole, the side wall above the heat dissipation lamp cup is provided with a plurality of through holes communicating with the gap in the circumferential direction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

一种LED灯，包括散热灯杯（1）和驱动电源壳体（2）。散热灯杯（1）内部为中空结构。散热灯杯（1）与驱动电源壳体（2）套接在一起。驱动电源壳体（2）与散热灯杯（1）的内壁之间留有空隙（7）。空隙（7）的上部、下部均与外界空气保持连通。驱动电源壳体（2）的下部和散热灯杯（1）的上部均留有使空隙（7）与外界保持空气流通的孔（9，10），从而使空隙（7）形成了空气流动层。空气的进入能带走驱动电源产生的热量，降低电源的工作环境温度，保证其使用寿命。

Description

一种LED灯 技术领域
本发明涉及 LED 照明技术领域，特别涉及一种 LED 灯。
背景技术
LED 灯工作是否稳定，品质好坏，与灯体本身散热至关重要，以往人们都着眼于LED光源的散热，通过改进散热灯杯的形状、构造、材质等以优化其散热性能，但通常对LED驱动电源的散热考虑不周。
例如，现有技术的大功率LED照明灯一般采用中空的散热灯杯，灯杯内设有固定LED发光组件的基座，基座将散热灯杯的空腔隔成LED发光组件容纳腔和驱动电源容纳腔，驱动电源壳体套在驱动电源容纳腔内，驱动电源壳体的上下端均为封闭状态，而驱动电源壳体的内壁紧贴于驱动电源容纳腔的内壁，因为散热灯杯本身已携带了LED光源的热量，所以驱动电路板处于散热灯杯内的高温环境中，热量难以有效散发，久而久之会影响驱动电源的电子元器件的正常工作，从而影响LED照明灯整体的使用寿命。
 技术解决方案
本发明针对上述现有技术中存在的不足，提供了一种对驱动电源进行散热的 LED 灯，从而减轻散热灯杯对电源的温度影响，降低电源的环境温度，延长了电源的使用寿命。
本发明的技术方案是这样实现的：
一种 LED 灯，包括散热灯杯、驱动电源壳体，所述的散热灯杯内部为中空结构，散热灯杯与驱动电源壳体套接在一起，所述的驱动电源壳体与散热灯杯内壁之间留有空隙，所述空隙的上部、下部均与外界空气保持连通。
作为优选，在驱动电源壳体外周上固定设有与散热灯杯底部相抵的承接环，在承接环上沿周向设有多个使外界与所述的空隙下部保持空气流通的孔洞。承接环不仅可以托住散热灯杯，在承接环上开设了多个孔洞，使所述的空隙下部可以通过孔洞与外界空气流通以进行散热。
作为优选，在散热灯杯内上部设有基座，在基座上设有 LED 发光组件，在基座的边缘处沿周向设有多个使外界与所述空隙上部相连通的通孔， LED 发光组件的外周与散热灯杯内壁之间留有使通孔与外界空气保持流通的间隙。所述的空隙上部通过通孔、 LED 发光组件与灯杯内壁间的间隙与外界空气流通以进行散热；由此，空隙的上下部均与外界空气流通，在驱动电源外形成了直上直下的空气流动层，不仅避免了散热灯杯对驱动电源的影响，还对驱动电源进行有效对流散热，使得电源环境温升下降约 5% 。
作为优选，在基座上方的散热灯杯的内壁上沿周向凸设有多个对 LED 发光组件进行限位的限位筋。限位筋的设置不仅可以方便 LED 发光组件的安装，还对 LED 发光组件进行限位，使其不对基座边缘的通孔造成遮挡，保证了空气流通。
作为优选，在基座下方的散热灯杯的内壁上沿周向凸设有对驱动电源壳体进行限位的凸筋，或在驱动电源壳体侧壁上设有多个凸筋。凸筋的设置不仅可以对驱动电源壳体进行限位，方便其安装，还使得壳体与灯杯内壁间留有空隙，形成空气流道。
作为另一种改进，在散热灯杯下方的侧壁上沿周向开设有多个使所述的空隙与外界保持空气流通的孔洞，散热灯杯上方的侧壁上沿周向开设有多个与空隙相连通的通孔。空隙上下部与外界空气保持流通的孔均是开设在散热灯杯侧壁上，空气从通孔进入流经空隙将热量从另外的通孔带出至灯体外。
作为优选，所述的散热灯杯包括灯杯本体，在灯杯本体的外周上沿周向分布有多个散热翅片，在散热翅片外包裹有外罩，外罩的上下两端与灯杯本体间均留有一圈开口。传统的压铸或挤出材料散热灯杯一般采用的单纯的条型散热翅片，这样的结构，热辐射有效面积不等同于实际外表面积，且只有实际外表面积的约 70% 。而本发明在规定规格体积下除了保留散热翅片的情况下，外面多包裹了一层外罩；既增大了散热器的有效辐射面积，也更加充分的利用了散热灯杯由外罩内壁和翅片之间的通孔所形成的 ' 烟囱 ' 效应，加强了空气的对流。相当于分别强化了辐射散热和自然对流散热。对于 LED 散热起到更好的作用。保证了 LED 更好的寿命和光效。
为了加工方便，作为优选，所述的外罩是由上罩体与下罩体两部分连接组成。
为了组装方便，作为优选，所述的上罩体下方的散热翅片上成型有至少两个扣接部，所述的下罩体的内壁上对应成型有至少两个扣合部，所述的下罩体的扣合部与扣接部相连。
作为优选，所述的上罩体与散热灯杯为铝合金一体压铸成型，所述的下罩体为塑胶材料制成。
 有益效果
采用了上述技术方案的本发明的设计思想及有益效果是：
本发明将驱动电源壳体与灯杯内壁间留有空隙，驱动电源壳体的上、下部均留有使空隙与外界保持空气流通的孔，从而使这部分空隙形成了空气流动层，使空气进入能带走驱动电源产生的热量，降低了电源工作的环境温度，保证了其使用寿命。
需要特别强调的是，上述空气流动层的设置不仅可以对驱动电源进行散热，还可以对散热灯杯向内部扩散的热量进行散热。
如在散热翅片外面包裹一层外罩， 外罩内壁和翅片之间形成的通孔同样可以形成空气流道，加强了空气的对流以对 LED 光源产生的热量进行散热。灯杯内外两个空气流道协同作用，大大提高了 LED 灯的散热效果，起到了意想不到的效果。
 附图说明
图 1 为本发明实施例中LED灯的爆炸图；
图2为本发明实施例中LED灯另一方向的爆炸图；
图3为本发明实施例中LED灯的立体结构示意图；
图4为图3的A-A剖视图；
图5为图1的A部放大图；
图6为图1的B部放大图；
图7为图4的A部放大图；
图8为实施例中LED灯另一方向的立体结构示意图；
图9为实施例中LED灯的结构示意图；
图10为图9仰视方向的结构示意图；
图11为图9俯视方向的结构示意图；
图12为实施例中LED灯的散热效果示意图。
 本发明的实施方式
本发明的具体实施方式如下：
实施例1：本实施例的一种LED灯，如图1～12所示， 包括散热灯杯 1 、驱动电源壳体 2 ，所述的散热灯杯 1 内部为中空结构，散热灯杯 1 内设有基座 3 ，基座 3 将散热灯杯 1 分隔为 LED 发光组件容纳腔 4 与驱动电源容纳腔 5 ，在驱动电源容纳腔 5 的内壁上沿周向凸设有对驱动电源壳体 2 进行限位的凸筋 6 ，驱动电源壳体 2 插设在驱动电源容纳腔 5 内，且驱动电源壳体 2 的外径小于驱动电源容纳腔 5 的内径；如图 4 所示，因凸筋 6 的存在使得驱动电源壳体 2 与散热灯杯内壁间留有多个空隙 7 。
如图 1 、图 2 、图 4 、图 8 、图 10 所示，在驱动电源壳体 2 外周上固定设有与散热灯杯底部相扣的承接环 8 ，在承接环 8 上沿周向设有多个使外界与所述的空隙 7 下部保持空气流通的孔洞 9 。
如图 1 、图 4 所示，在基座 3 的边缘处沿周向设有多个使外界与所述空隙 7 上部相连通的通孔 10 ，在 LED 发光组件容纳腔 4 的内壁上沿周向凸设有多个对 LED 发光组件进行限位的限位筋 11 ，如图 1 、图 3 、图 4 所示，限位筋 11 的存在使得 LED 发光组件的外周与灯杯内壁之间留有使通孔 10 与外界空气保持流通的间隙 12 。所述的 LED 发光组件包括基板 19 、塑胶圈 21 及透镜 22 ，在基板 19 上固定有多个 LED 光源 20 ，塑胶圈 21 固定在基板 19 上，透镜 22 卡在塑胶圈 21 内。
如图 1~ 图 12 所示，所述的散热灯杯 1 包括灯杯本体 13 ，在灯杯本体 13 的外周上沿周向分布有多个散热翅片 14 ，在散热翅片 14 外包裹有外罩 15 ，外罩 15 的上下两端与灯杯本体 13 间均留有一圈开口 16 。所述的外罩 15 是由上罩体 17 与下罩体 18 两部分连接组成，所述的上罩体 17 与散热灯杯为铝合金一体压铸成型，所述的下罩体 18 为塑胶材料制成；如图 5 ～图 7 所示，所述的上罩体 17 下方的散热翅片上成型有至少两个扣接部 23 ，所述的下罩体 18 的内壁上对应成型有至少两个扣合部 24 ，所述的下罩体的扣合部与上罩体 17 的扣接部扣合在一起，使上、下罩体组合连接为一整体。上、下罩体的组合使得外罩内壁和翅片之间形成的通孔长度能够极大满足空气对流散热的效果。
如图 12 所示，本发明 LED 灯的散热过程是这样的，对于内散热空气流道，冷空气由间隙 12 、通孔 10 进入到空隙 7 内，并向上运动，经由承接环 8 上的孔洞 9 带走驱动电源、 LED 光源产生的热量；对于外散热空气流道，冷空气由灯体一端开口 16 进入到外罩内壁和翅片之间形成的通孔内，向上运动经由灯体另一端的开口 16 带走散热灯杯产生的热量。内外两层散热空气流道协同作用， 分别强化辐射散热和自然对流，达到完美的散热目的。
本发明适合各种LED灯具的结构设计应用，包括PAR灯系类（PAR30，PAR38等）及球泡灯系列（A60，A55等）所有内置电源设计的LED的灯具 。
实施例 2 ：本实施例与实施例 1 的区别在于：空隙与外界保持空气流通的孔是设置在散热灯杯的侧壁上，即在散热灯杯下方的侧壁上沿周向开设有多个使所述的空隙与外界保持空气流通的孔洞，散热灯杯上方的侧壁上沿周向开设有多个与空隙相连通的通孔。

Claims (1)

  1. 1、 一种 LED 灯，包括散热灯杯、驱动电源壳体，所述的散热灯杯内部为中空结构，散热灯杯与驱动电源壳体套接在一起，其特征是：所述的驱动电源壳体与散热灯杯内壁之间留有空隙，所述空隙的上部、下部均与外界空气保持连通。
    2、 根据权利要求 1 所述的一种 LED 灯，其特征是：在驱动电源壳体外周上固定设有与散热灯杯底部相抵的承接环，在承接环上沿周向设有多个使外界与所述的空隙下部保持空气流通的孔洞。
    3、 根据权利要求 1 所述的一种 LED 灯，其特征是：在散热灯杯内上部设有基座，在基座上设有 LED 发光组件，在基座的边缘处沿周向设有多个使外界与所述空隙上部相连通的通孔， LED 发光组件的外周与散热灯杯内壁之间留有使通孔与外界空气保持流通的间隙。
    4、 根据权利要求 3 所述的一种 LED 灯，其特征是：在基座上方的散热灯杯的内壁上沿周向凸设有多个对 LED 发光组件进行限位的限位筋。
    5、 根据权利要求 1 所述的一种 LED 灯，其特征是：在基座下方的散热灯杯的内壁上沿周向凸设有对驱动电源壳体进行限位的凸筋，或在驱动电源壳体侧壁上设有多个凸筋。
    6、 根据权利要求 1 所述的一种 LED 灯，其特征是：在散热灯杯下方的侧壁上沿周向开设有多个使所述的空隙与外界保持空气流通的孔洞，散热灯杯上方的侧壁上沿周向开设有多个与空隙相连通的通孔。
    7、 根据权利要求 1 所述的一种 LED 灯，其特征是：所述的散热灯杯包括灯杯本体，在灯杯本体的外周上沿周向分布有多个散热翅片，在散热翅片外包裹有外罩，外罩的上下两端与灯杯本体间均留有一圈开口。
    8、 根据权利要求 7 所述的一种 LED 灯，其特征是：所述的外罩是由上罩体与下罩体两部分连接组成。
    9、 根据权利要求 8 所述的一种 LED 灯，其特征是：所述的上罩体下方的散热翅片上成型有至少两个扣接部，所述的下罩体的内壁上对应成型有至少两个扣合部，所述的下罩体的扣合部与扣接部相连。
    10、 根据权利要求 8 或 9 所述的一种 LED 灯，其特征是：所述的上罩体与散热灯杯为铝合金一体压铸成型，所述的下罩体为塑胶材料制成。
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