WO2012116478A1 - 一种led灯 - Google Patents

一种led灯 Download PDF

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Publication number
WO2012116478A1
WO2012116478A1 PCT/CN2011/000976 CN2011000976W WO2012116478A1 WO 2012116478 A1 WO2012116478 A1 WO 2012116478A1 CN 2011000976 W CN2011000976 W CN 2011000976W WO 2012116478 A1 WO2012116478 A1 WO 2012116478A1
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WO
WIPO (PCT)
Prior art keywords
reflector
led lamp
heat sink
led
lamp according
Prior art date
Application number
PCT/CN2011/000976
Other languages
English (en)
French (fr)
Inventor
郭平
龙海奔
Original Assignee
佛山市科思栢丽光电有限公司
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Application filed by 佛山市科思栢丽光电有限公司 filed Critical 佛山市科思栢丽光电有限公司
Publication of WO2012116478A1 publication Critical patent/WO2012116478A1/zh

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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
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
    • F21V7/0041—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following for avoiding direct view of the light source or to prevent dazzling
    • 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
    • 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

Definitions

  • the present invention relates to lighting fixtures, and more particularly to an LED reflector lamp that can be used for commercial lighting in offices, shopping malls, subways, libraries, banks, hotels, and the like.
  • LED Light Emitting Diode
  • LED Light Emitting Diode
  • one or several LEDs are arranged as light sources on the light source panel located in the lamp housing to achieve the required brightness and power.
  • the light emitted by the LED is refracted by the reflector disposed in the lamp housing and then projected. The more LEDs are set, the higher the brightness and power of the luminaires produced.
  • LED lamps work with a large amount of heat, and the more LEDs, the greater the heat generation, thus causing the temperature of the LED lamps to rise, resulting in greater light decay, reduced light efficiency, and shortening the use of LED lamps. life.
  • Existing LED luminaires usually use an increased heat dissipation area method to reduce the temperature of the luminaire.
  • a heat conducting plate or a heat conducting bracket made of a high thermal conductivity material is used to connect the light source panel to the heat sink. So that the heat generated by the LED is quickly transmitted to the radiator through the light source panel, the heat conducting plate or the heat conducting bracket to be radiated into the air, thereby reducing the temperature of the lamp.
  • LED spotlights currently on the market generally use a single lens or a single reflector cup. If a single lens is used, the luminous flux can be very high, but the central light intensity is not enough. If a single reflector cup is used, the luminous flux can be achieved, but it is difficult to achieve a small angle of incidence, and the light utilization of both structures is low. .
  • the present invention provides an LED lamp comprising a hollow heat sink and a reflector cup adapted to the inner cavity of the heat sink.
  • the bottom of the reflector is provided with a through hole.
  • the bottom of the heat sink is provided with a control circuit board.
  • the control circuit board is provided with at least one LED light source, and the LED light source is located in the through hole of the reflector.
  • a second reflective member is disposed above the through hole in the reflector.
  • the second reflective member may be a second reflective cup, and the bottom of the second reflective cup is provided with a small hole, the small hole is opposite to the LED light source; and the second reflective member may also be a lens.
  • a heat dissipation oil layer may be disposed between the control circuit board and the bottom of the heat sink inner cavity.
  • the inner surface of the reflector may be provided with a layer of reflective material, and the second reflector cup may be formed in a parabolic shape, and the inner surface thereof is provided with a layer of reflective material.
  • the heat sink is a hollow cylinder closed at one end and open at one end, and the inner surface thereof is an arc surface adapted to the outer surface of the reflector.
  • the heat sink and the reflector are integrally formed.
  • the heat sink, the reflector and the second reflective member are made of a thermally conductive material.
  • the heat conductive material may be aluminum or aluminum alloy.
  • the invention directly fixes the LED which generates the heat source on the heat sink, reduces the heat conduction path, makes the heat distribution as uniform as possible, improves the heat conduction efficiency, reduces the LED junction temperature, and improves the life of the lamp; increases the second reflection member, adopts at least one LED
  • the light source allows the light from the LED to be reflected twice, and the emitted light is adjusted to within the effective angle of incidence, plus the direct direct aperture in the middle to increase the luminous flux.
  • the use of two reflections can fully improve the light utilization rate, and the maximum intensity of the center is increased by about 20% compared with the similar LED spotlights; the second reflecting member has a transmission hole at the center, making full use of its reflection and transmission effects, effectively improving Luminous flux, and effectively reduce glare; in terms of heat dissipation and light efficiency, all meet or exceed similar products.
  • LED lamps will be further enhanced in terms of energy saving, environmental protection and long life.
  • Figure 1 is an exploded perspective view of a preferred embodiment of the present invention
  • Figure 2 is a perspective view of the top view of the preferred embodiment of the present invention.
  • Figure 3 is a perspective view of the bottom portion of the preferred embodiment of the present invention.
  • a preferred embodiment of the LED lamp of the present invention includes a hollow heat sink 1 and a reflector 2 adapted to the interior of the heat sink.
  • the bottom of the reflector 2 is provided with a through hole 5, and the bottom of the inner cavity of the heat sink 1 is closely connected to a control circuit board 8.
  • the control circuit board is provided with at least one LED light source 7, which is located in the through hole of the reflector 2 5 in.
  • a second reflecting cup 3 having a paraboloidal shape is disposed above the through hole 5 in the reflector cup 2, and the second reflecting cup 3 is fixedly connected to the heat sink 1 through the three pillars 6.
  • the bottom of the second reflector cup 3 is provided with a small hole 4 which faces the LED light source 7.
  • the heat sink 1 is a hollow cylinder closed at one end and open at one end, the inner surface of which is an arcuate surface adapted to the outer surface of the reflector 2.
  • a heat dissipation oil layer is disposed between the control circuit board 8 and the bottom of the heat sink 1 inner cavity.
  • the radiator 1 and the reflector 2 are manufactured separately, and the radiator 1 and the reflector 2 can also be integrally formed as needed.
  • the inner surfaces of the reflector 2 and the second reflector cup 3 are each provided with a layer of a reflective material.
  • the second reflector cup 3 can also be replaced by a lens.
  • the heat sink 1, the reflector cup 2, and the second reflector cup 3 can all be made of a material having high thermal conductivity, such as aluminum or aluminum alloy.
  • the invention directly fixes the LED which generates the heat source on the heat sink, reduces the heat conduction path, makes the heat distribution as uniform as possible, improves the heat conduction efficiency, lowers the LED junction temperature, and improves the life of the lamp; increases the second reflection member, adopts at least one LED
  • the light source allows the light emitted by the LED to be reflected twice, and the emitted light is adjusted to within the effective angle of incidence, plus the direct direct aperture in the middle to increase the luminous flux.
  • the second reflecting member adds a transmission hole in the center, fully utilizes its reflection and transmission effects, effectively increases the luminous flux, and effectively reduces glare; and achieves or exceeds similar products in terms of heat dissipation and light efficiency.
  • the invention can be used for various lightings, especially for office, shopping malls, subways, libraries, banks, hotels and other commercial lighting.

Landscapes

  • 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)

Description

说 明 书
一种 LED灯 技术领域
本发明涉及照明灯具， 尤其是涉及一种可用于办公、 商场、 地铁、 图书馆、 银行、 酒店等商业照明的 LED反射灯。
背景技术
由于 LED ( Light Emitting Diode, 发光二极管）具有节能、 环保、 寿命长和 结构简单、 造型方便等突出优点， 已经渐渐取代传统的高压鹵素灯而广泛应用 于各种照明设备中。 实际生产中是在位于灯具壳体内的光源面板上设置一个或 若干个 LED作为光源， 以达到所需要的亮度和功率， LED发出的光线经过设置 于灯具壳体内的反光杯折射后再投射出去。 设置的 LED数量越多， 制作的灯具 亮度和功率也就越高。
然而， LED灯具工作时发热量较大， LED数量越多， 发热量越大， 因此造 成 LED灯具的温度升高， 而产生较大的光衰、 光效降低； 同时也会缩短 LED灯 具的使用寿命。 现有 LED灯具通常采用加大散热面积方法来降低灯具的温度， 即除采用带有散热片的散热器之外， 还采用高导热性能材料制作的导热板或导 热支架将光源面板与散热器连接起来，以便使得 LED产生的热量通过光源面板、 导热板或导热支架快速传给散热器而散发到空中， 从而降低灯具的温度。 由于 现有 LED灯具热传导构件多、 热传导途径长， 则散热效果不够理想， 因此 LED 灯具节能、 环保、 寿命长等突出优点还没有充分发挥出来。 另外， 现在市面上 的 LED射灯， 一般都采用单一的透镜或单一的反射杯。 如果采用单一的透镜， 光通量可以做到很高， 但是中心光强不够； 如果采用单一的反射杯， 光通量可 以达到， 但很难做到小角度射角， 两种结构的光利用率都偏低。
所以， 有必要从散热角度改善， 提高灯具寿命和发光效率； 从光学方面， 改善其光利用率， 改善发光角度， 提高光强和光通量以及进一步提高 LED灯具 节能、 环保、 寿命长等优点。 发明内容
本发明为了解决现有技术 LED筒灯亮度不均匀、容易产生眩光的技术问题, 提出一种节能、 环保、 寿命长和结构筒单紧凑的 LED灯。
为解决上述技术问题， 本发明提出的一种 LED灯， 其包括一中空的散热器 和与该散热器内腔适配的反光杯。 该反光杯的底部设有一通孔， 散热器内腔底 部设有一控制电路板，该控制电路板上设有至少一个 LED光源 ,该 LED光源位 于所述反光杯的通孔中。 优选的， 所述反光杯中通孔的上方设有第二反射构件。 所述的第二反射构件可以为第二反射杯， 该第二反射杯的底部设有一小孔， 该小孔正对所述的 LED光源； 所述的第二反射构件也可以为一透镜。 较优的， 所述的控制电路板与散热器内腔底部之间可以设有散热油层。 所述反光杯的内表面可以设有反光材料层， 所述的第二反射杯可以制作成 抛物面状， 其内表面设有反光材料层。 较优的， 所述的散热器为一端封闭、 一端开口的中空圓柱体， 其内表面为 与所述反光杯的外表面适配的弧形面。 较优的， 所述的散热器和反光杯可以一体成型。 所述的散热器、 反光杯和第二反射构件由导热材料制作。 所述的导热材料可以为铝材或铝合金。
本发明将产生热源的 LED直接固定在散热器上， 减少了导热途径， 并使热 分布尽量均匀， 提高导热效率， 降低 LED结温， 提高灯具寿命； 增加第二反射 构件， 采用最少一颗 LED光源， 使得 LED发出的光线可以进行两次反射， 而调 整发射光到有效射角之内， 加上中间的直射孔， 可增加更大的光通量。 即采用 两次反射，能够充分的提高光利用率，中心最大光强比同类 LED射灯提高了 20% 左右； 第二反射构件， 中心增加了透射孔， 充分利用其反射和透射作用， 有效 提高光通量， 并有效的降低了眩光； 在散热和光效方面， 均达到或超越同类产 品。 最终进一步发挥 LED灯具节能、 环保、 寿命长等优点。 附图说明
下面结合实施例和附图对本发明进行详细说明， 其中: 图 1是本发明较佳实施例的立体分解图；
图 2是本发明较佳实施例的顶部所视的立体图；
图 3是本发明较佳实施例的底部所视的立体图。
具体实施方式
请阅图 1、 图 2和图 3， 本发明提出的一种 LED灯的较佳实施例， 其包括 一中空的散热器 1和与该散热器内腔适配的反光杯 2。该反光杯 2的底部设有一 通孔 5， 而散热器 1内腔底部紧密连接一控制电路板 8， 该控制电路板上设有至 少一个 LED光源 7, 该 LED光源位于反光杯 2的通孔 5中。 本实施例中， 反光 杯 2中通孔 5的上方设有一个呈抛物面状的第二反射杯 3,该第二反射杯 3通过 三个支柱 6与散热器 1连接固定。该第二反射杯 3的底部设有一小孔 4， 该小孔 正对 LED光源 7。 散热器 1为一端封闭、 一端开口的中空圓柱体， 其内表面为 与反光杯 2的外表面适配的弧形面。 控制电路板 8与散热器 1 内腔底部之间设 有散热油层。 散热器 1和反光杯 2分体制作， 根据需要， 散热器 1和反光杯 2 也可以一体成型。 反光杯 2和第二反射杯 3的内表面均设有反光材料层。 第二 反射杯 3也可以用一个透镜替代。散热器 1、反光杯 2和第二反射杯 3均可以采 用高导热性能的材料制作， 例如、 铝材或铝合金。
本发明将产生热源的 LED直接固定在散热器上， 减少了导热途径， 并使热 分布尽量均匀， 提高导热效率， 低 LED结温， 提高灯具寿命； 增加第二反射 构件， 采用最少一颗 LED光源，使得 LED发出的光线可以进行两次反射， 而调 整发射光到有效射角之内， 加上中间的直射孔， 可增加更大的光通量。 第二反 射构件， 中心增加了透射孔， 充分利用其反射和透射作用， 有效提高光通量， 并有效的降低了眩光； 在散热和光效方面， 均达到或超越同类产品。 本发明可 用于各种照明， 尤其适合办公、 商场、 地铁、 图书馆、 银行、 酒店等商业照明。
以上所述仅为本实用新型的较佳实施例而已， 并不用以限制本实用新型， 凡在本实用新型的精神和原则之内所作的任何修改、 等同替换和改进等， 均应 包含在本实用新型的保护范围之内。

Claims

权 利 要 求 书
1、 一种 LED灯， 包括一中空的散热器（1)和与该散热器内腔适配的反光 杯（2), 其特征在于： 所述反光杯（2) 的底部设有一通孔（5)， 散热器（1) 内腔底部设有一控制电路板 ( 8 )， 该控制电路板上设有至少一个 LED光源（ 7 )， 该 LED光源位于所述反光杯 (2)的通孔（5) 中。
2、 根据权利要求 1所述的 LED灯， 其特征在于： 所述反光杯 (2) 中通孔 (5) 的上方设有第二反射构件。
3、 根据权利要求 2所述的 LED灯， 其特征在于： 所述的第二反射构件为 第二反射杯（3)，该第二反射杯的底部设有一小孔（4)，该小孔正对所述的 LED 光源 ( 7 )。
4、 根据权利要求 3所述的 LED灯， 其特征在于： 所述反光杯（2)的内表 面设有反光材料层； 所述的第二反射杯（3)呈抛物面状， 其内表面设有反光材 料层。
5、 根据权利要求 2所述的 LED灯， 其特征在于： 所述的第二反射构件为 一透镜。
6、 根据权利要求 3或 4或 5任一项所述的 LED灯， 其特征在于： 所述的 控制电路板 (8)与散热器（1) 内腔底部之间设有散热油层。
7、 根据权利要求 6所述的 LED灯， 其特征在于： 所述的散热器（1)为一 端封闭、 一端开口的中空圓柱体， 其内表面为与所述反光杯（2)的外表面适配 的弧形面。
8、 根据权利要求 7所述的 LED灯， 其特征在于： 所述的散热器（ 1 )和反 光杯 (2)一体成型。
9、 根据权利要求 8所述的 LED灯， 其特征在于： 所述的散热器（ 1 )、 反 光杯（2)或第二反射杯（3) 由导热材料制作。
10、 根据权利要求 9所述的 LED灯， 其特征在于： 所述的导热材料为铝材 或铝合金。
PCT/CN2011/000976 2011-03-03 2011-06-13 一种led灯 WO2012116478A1 (zh)

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Publication number Priority date Publication date Assignee Title
EP2725295B1 (en) * 2012-10-26 2017-11-08 LG Electronics Inc. Lighting apparatus
CN103557453A (zh) * 2013-10-18 2014-02-05 华南师范大学 一种远程荧光led装置
CN103557453B (zh) * 2013-10-18 2015-07-15 华南师范大学 一种远程荧光led装置
US10361348B2 (en) 2014-11-19 2019-07-23 Mitsubishi Chemical Corporation Spot lighting apparatus

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