CN101769460A - 发光二极管灯具 - Google Patents
发光二极管灯具 Download PDFInfo
- Publication number
- CN101769460A CN101769460A CN200910300095A CN200910300095A CN101769460A CN 101769460 A CN101769460 A CN 101769460A CN 200910300095 A CN200910300095 A CN 200910300095A CN 200910300095 A CN200910300095 A CN 200910300095A CN 101769460 A CN101769460 A CN 101769460A
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- Prior art keywords
- led lamp
- heat sink
- lamp
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- radiating
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- 229910052751 metals Inorganic materials 0.000 description 4
- 239000002184 metals Substances 0.000 description 4
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- 239000007858 starting materials Substances 0.000 description 4
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- 238000010521 absorption reactions Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 2
- 229910052743 krypton Inorganic materials 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical group 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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
- 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
- F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
-
- 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
- F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
-
- 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
- F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
- F21K9/272—Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
- F21V19/0055—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by screwing
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
- F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
- F21V23/009—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing the casing being inside the housing of the lighting device
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
- F21V23/023—Power supplies in a casing
-
- 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
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
- F21V29/767—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having directions perpendicular to the light emitting axis
-
- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
-
- 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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- 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]
Abstract
一种发光二极管灯具，包括一光学部、一电气部及一散热部。该光学部包括至少一发光二极管光源；该电气部包括至少一电路板及两灯头，用以提供发光二极管光源所需要的驱动电源、控制电路及电源管理；该散热部包括设于电气部的两灯头之间的一长管状的散热件，该散热件包括一散热基座及一散热板，并由所述散热基座与散热板围成一中空管体。发光二极管光源设于散热基座的外表面上，电气部的电路板设于该散热件的中空管体内，发光二极管所产生的热量经散热基座传至散热板并由散热板散发。
Description
发光二极管灯具
技术领域
[0001] 本发明涉及一种半导体照明装置，特别是关于一种发光二极管灯具。
背景技术
[0002] 人们由于长期过度依赖石化燃料，除造成能源短缺及石油价格高涨而牵动经济发 展，更使全球二氧化碳与有害气体的排放浓度日益增加，导致地球暖化所引起气候的反常、 生态环境的破坏、以及对人类生存的危害日益显现，为永续经营人类赖以生存的地球生态 环境，必须同时解决能源危机与环境污染问题，开发新能源及再生能源是推动节约能源及 高效率使用能源最重要的策略，而传统照明所消耗的能源极为可观，发展照明节能将是最 重要的新能源科技，而半导体照明采用高功率高亮度的发光二极管（LED)为光源，该新光 源以其高发光效率、节能、长寿、环保（不含汞）、启动快、指向性等优点，具有广泛取代传统 照明光源的潜力。
[0003] LED由于输入电能的80%〜90%转变成为热量，只有10%〜20%转化为光能，且 由于LED芯片面积小，因此芯片散热是LED封装必须解决的关键问题；优良的散热系统可在 同等输入功率下得到较低的工作温度，延长LED的使用寿命，或在同样的温度限制范围内， 增加输入功率或芯片密度，从而增加LED灯的亮度；结点温度（Junction temperature)是 衡量LED封装散热性能的重要技术指标，由于散热不良导致的结点温度升高，将严重影响 到发光波长、光强、光效和使用寿命。
[0004] 应用高功率高亮度LED在照明的新光源上，必须配合高效率的散热机构以尽量降 低LED的结点温度，才能发挥上述诸多优点，否则照明装置的发光亮度、使用寿命将大打折 扣，影响所及将使该照明装置的节能效果不彰，并直接冲击该照明装置的可靠度，引发严重 的光衰甚至使照明装置失效。
[0005] 现有日光灯主要由灯管、整流器和启动器组成，因发光效率约为钨丝灯泡的数倍， 已成为目前最普遍使用的照明装置，其发光是利用密闭的气体放电原理，具体结构包括于 真空的玻璃管内壁镀以荧光物质，并于其内充入惰性气体（例如氩（Argon)、氖（Neon)或氪 (Krypton))及汞蒸汽，通过能产生高电压的整流器使管内导通的电流激发汞原子产生气体 放电，并在放电过程中释放出紫外光及热量，通过所述荧光物质吸收紫外光后释放出可见 光；不同的荧光物质会发出不同的可见光；惟，现有日光灯的主要气体放电物质为具有毒 性的汞及荧光物质，长年大量使用日光灯所累积的废弃物将使环境受到严重污染。
发明内容
[0006] 有鉴于此，有必要提供一种符合环保、高效率散热并兼顾照明与配光的发光二极 管灯具。
[0007] —种发光二极管灯具，包括一光学部、一电气部及一散热部。该光学部包括至少一 发光二极管光源；该电气部包括至少一电路板及两灯头，用以提供发光二极管光源所需要 的驱动电源、控制电路及电源管理；该散热部包括设于电气部的两灯头之间的一长管状的散热件，该散热件包括一散热基座及一散热板，并由所述散热基座与散热板围成一中空管 体。发光二极管光源设于散热基座的外表面上，电气部的电路板设于该散热件的中空管体 内，发光二极管所产生的热量经散热基座传至散热板并由散热板散发。
[0008] 作为该发光二极管灯具的进一步改进，该散热件的散热板外表面为凹凸面或设有 鳍片。
[0009] 本发明具有如下优点：
[0010] 提供一种长管状的散热件，通过该散热件的散热基座所提供的大吸热面积与散热 板所提供的大散热面积，达到强化发光二极管光源的散热效率以确保该发光二极管灯具的 高光效、长使用寿命及轻量化的功效。
[0011] 提供一种容置电气部的电路板的长管状散热件，通过该散热件的金属壁面所提供 的电磁幅射屏蔽功能，达到确保该发光二极管灯具的电气安全性与美化外观的功效。 [0012] 提供一种由长管状的散热件承载光学部与电气部的发光二极管灯具结构，通过散 热件的中空管体结构所形成的容置空间，达到简化发光二极管灯具的制程、充分运用空间 以縮小体积、及强化该发光二极管灯具的整体结构的功效。
[0013] 提供一种长管状的散热件，通过该散热件的散热板外表面的凹凸面或所设鳍片以 扩大散热面积，达到进一步强化发光二极管灯具的散热效率，以确保该发光二极管灯具的 高光效、长使用寿命的功效。
[0014] 提供一种长管状的散热件，所述散热件可通过挤形制程一体成型，不但可大幅降 低传热的热阻，且适用于量产而大幅降低成本。
[0015] 提供一种具有日光灯特性的发光二极管灯具，特别是在不需整流器和启动器的电 连接特性下，提供一种较现有日光灯供电需求更为简单实用的发光二极管灯具，达到方便 更换及安装的功效。
[0016] 提供一种可直接装入习用日光灯灯座及灯盘的发光二极管灯具，不但方便替换习 用日光灯管，达到充分利用既有资源降低回收再利用的减废功效，且可因此获致大幅节省 制造与安装成本的经济效益。
附图说明
[0017] 下面参照附图，结合实施例对本发明作进一步描述。
[0018] 图1是本发明发光二极管灯具第一实施例的立体组装图。
[0019] 图2是图1中II-II处的剖视图。
[0020] 图3是图1中灯头的立体图。
[0021] 图4是图1所示发光二极管灯具与一灯座对接的示意图。
[0022] 图5是将多支图1所示发光二极管灯具安装于一灯盘的示意图。
[0023] 图6是本发明发光二极管灯具第二实施例的剖视图。
[0024] 图7是本发明发光二极管灯具第三实施例的剖视图。
具体实施方式
[0025] 图1是本发明发光二极管灯具100第一实施例的立体组装图，图2是图1中II-II 处的剖视图，图3是图1中灯头32的立体图，图4是图1所示发光二极管灯具100与一灯座40对接的示意图，图5是将多支图1所示发光二极管灯具100安装于一灯盘50的示意 图。该发光二极管灯具100主要包括一光学部10、一散热部及一电气部。 [0026] 光学部IO包括至少一发光二极管光源ll及一导光罩12，发光二极管光源11为一 体成型件，包括一长条形的导热基板111、设置于导热基板111上的若干发光体112以及设 于该导热基板111端部的若干电极（图未示），其中所述发光体112由至少一发光二极管 芯片经透明封装所形成。所述发光二极管光源11的导热基板111与散热部的一散热基座 21的一吸热面211之间的紧密热接触可先在其间涂抹一层热界面材料（TIM)，再将已套装 电绝缘垫片113的若干螺丝114分别穿过导热基板111上的若干固定孔115，以便锁固于散 热基座21所设螺孔212，也可通过回焊方式将导热基板111直接黏贴（SMT)于该散热基座 21的吸热面211上，以传输及移除该发光二极管光源11发光时释出的热量；该发光二极管 光源11的发光可通过电线（图未示）连接发光二极管光源11的电极与电气部中的一电路 板31以及通过电线连接该电路板31与外部电源达成；所述发光二极管光源ll与散热基座 21上的吸热面211之间的紧密热接触还可通过先对散热基座21上的吸热面211进行电绝 缘处理，然后在该经电绝缘处理的吸热面211上铺设金属线路如铜线路，再将发光二极管 芯片与所述金属线路电连接并于发光二极管芯片外包覆一透明封装体而达成，采用此种方 式的发光二极管光源不包含导热基板lll，从而避免导热基板111与散热基座21之间传热 时接触热阻的产生，此时，发光二极管光源11所产生的热量可直接由散热基座21吸收并予 以快速散发，以进一步提升散热效率。为方便叙述，本实施例及以下实施例皆仅以包含有导 热基板111的发光二极管光源11予以说明，实际上，各实施例中的发光二极管光源皆可用 上述不含导热基板111的发光二极管光源替代。
[0027] 如图2所示，该导光罩12为一圆弧形的透光罩盖，其罩设于发光二极管光源11 上，以提供发光二极管灯具100所需的照明分布、发光特性及对发光二极管光源11保护的 功能。该导光罩12的两侧边的末端分别向内延伸设有一凸缘121，用以与散热件20相扣合。
[0028] 散热部包括一长管状的散热件20，该散热件20由导热性良好的金属制成，包括散 热基座21及一散热板22，并由所述散热基座21与散热板22围成一纵长且呈矩形的中空 管体。所述散热基座21为沿散热件20纵向延伸的一长条状管壁，该散热基座21的外表面 为与发光二极管光源ll的发热面紧密热连接的吸热面211，该散热基座21的左右两侧边 分别设有一凹槽213以容置导光罩12的凸缘121。本实施例中，所述散热板22包括两侧 板221及一连接板222，该两侧板221分别由散热基座21的两侧向下延伸所形成，该连接 板222连接于两侧板221之间并与散热基座21相对。由所述散热板22的外表面224所提 供的大散热面积与周围环境进行热交换，达到持续以高散热效率移除该发光二极管光源ll 发光时所释出的热量，以确保该发光二极管灯具100的高光效及长使用寿命的功效。 [0029] 所述长管状的散热件20可通过挤形制程一体成型，不但可适用于量产而大幅降 低成本，且相较于通过接合不同散热组件以增加散热面积的现有传热方式，可大幅降低传 热时的界面热阻，从而确保发光二极管光源ll获致较低的节点温度。其中，该散热件20也 可为其它形状，如将散热件20的散热板22设计为弧形。
[0030] 该发光二极管灯具100的散热是透过气流温差导致的密度差而产生热浮力，并通 过热空气向上漂浮的惯性趋势引导冷空气接近散热板22的外表面224，使所述冷空气吸收由发光二极管光源11传至散热板22的热量而升温并上浮，同时，新的冷空气会自动填补已 上浮的热空气空间，并同样经吸热升温上浮而发挥散热板22局部散热的效果；如此周而复 始在散热板22的大散热面积形成冷热气流交替的自然循环移热现象，以强化散热效果，从 而确保该发光二极管灯具100发挥高效率与稳定的光输出效果。
[0031] 电气部包括至少一电路板31及两灯头32，该电路板31外套装有一绝缘件33，所 述电路板31与绝缘件33共同设置于散热件20的中空管体内，光学部IO及散热部设于该 两灯头32之间。灯头32包括用以封闭光学部10及散热部的一端板321、设于该端板321 外侧的一对插电杆322、设于该端板321内侧的一矩形且呈中空的结合件323及一弧形的定 位件324。所述插电杆322可与传统日光灯的灯座电连接用以接引外部电源至电路板31 ; 该接合件323凸伸至散热件20的中空管体内，该定位件324凸伸至导光罩12并与导光罩 12的内壁密贴，达到以灯头32的端板321封闭散热件20及导光罩12的端部。 [0032] 所述长管状的散热件20为隔离保护该电路板31的一密封罩体，通过该散热件20 的金属壁面所提供的电磁幅射屏蔽功能，可确保该发光二极管灯具100的电气安全性；并 通过该长管状的散热件20内收纳电气组件与电线可美化该发光二极管灯具100的外观；又 通过该长管状的散热件20承载光学部10与电气部，除可简化发光二极管灯具100的制程 并充分运用空间以縮小体积外，更可强化该发光二极管灯具100的整体结构。 [0033] 该电路板31通过电线分别与发光二极管光源11的电极及外部电源电连接，上述 外部电源除可采用与发光二极管光源11匹配的直流或交流电源外，也可透过电源转换器 将交流市电转换为适合该发光二极管光源11的直流电源，并提供该发光二极管光源11的 驱动控制及发光二极管灯具100的电源管理。因此，本实施例提供一种具有日光灯特性的
发光二极管灯具ioo，特别是在不需整流器和启动器的电连接特性下，提供一种较现有日光
灯供电需求更为简单实用的发光二极管灯具100。该发光二极管灯具IOO可直接装入习用 日光灯的灯座40 (图4所示）及并可将多支发光二极管灯具100安装于一灯盘500图5所 示）以扩充照明容量，不但方便替换习用日光灯管，更可充分利用既有资源，达到降低回收 再利用的减废功效，从而获致大幅节省制造与安装成本的经济效益。通过所述灯盘50将若 干支发光二极管灯具100整合成一模块，以形成一种能延伸照明容量的模块化发光二极管 灯具组，从而可依不同的照明需求，将光二极管灯具100的数量及配置作弹性的组合，达到 降低成本，发挥设计多样化及应用灵活化的功效。
[0034] 图6是本发明发光二极管灯具100a第二实施例的剖视图；本实施例与第一实施例 的主要区别在于：该发光二极管灯具100a中散热件20a的散热板22a的外表面224a为波 浪形，从而使散热件20a的散热面成为具较大面积的若干弧形面，在不明显增加重量的情 况下大幅增加散热板22a与冷却空气接触的自然循环面积，达到进一步提升发光二极管灯 具100a的整体散热效率。
[0035] 图7是本发明发光二极管灯具100b第三实施例的剖视图；本实施例与前述实施例 的主要区别在于：该发光二极管灯具100b中散热件20b的散热板22b的两侧板221a于外 表面224b设有若干鳍片225，从而大幅增加与冷却空气接触的自然循环面积，达到更进一 步提升发光二极管灯具100b的整体散热效率。
[0036] 由上述的实施方式已进一步清楚说明本发明的技术特征及达成的功效，包括： [0037] 1)本发明提供一种长管状的散热件，通过该散热件的散热基座所提供的大吸热面积与散热板所提供的大散热面积，达到强化发光二极管光源的散热效率以确保该发光二极 管灯具的高光效、长使用寿命及轻量化的功效。
[0038] 2)本发明提供一种容置电气部的电路板的长管状散热件，通过该散热件的金属壁 面所提供的电磁幅射屏蔽功能，达到确保该发光二极管灯具的电气安全性与美化外观的功 效。
[0039] 3)本发明提供一种由长管状的散热件承载光学部与电气部的发光二极管灯具结 构，通过散热件的管体结构所形成的容置空间，达到简化发光二极管灯具的制程、充分运用 空间以縮小体积、及强化该发光二极管灯具的整体结构的功效。
[0040] 4)本发明提供一种长管状的散热件，通过该散热件的散热板外表面的凹凸面或所 设鳍片以扩大散热面积，达到进一步强化发光二极管灯具的散热效率，以确保该发光二极 管灯具的高光效、长使用寿命的功效。
[0041] 5)本发明提供一种长管状的散热件，所述散热件可通过挤形制程一体成型，不但 可大幅降低传热的热阻，且适用于量产而大幅降低成本。
[0042] 6)本发明提供一种具有日光灯特性的发光二极管灯具，特别是在不需整流器和启 动器的电连接特性下，提供一种较现有日光灯供电需求更为简单实用的发光二极管灯具， 达到方便更换及安装的功效。
[0043] 7)本发明提供一种可直接装入习用日光灯灯座及灯盘的发光二极管灯具，不但方 便替换习用日光灯管，达到充分利用既有资源降低回收再利用的减废功效，且可因此获致 大幅节省制造与安装成本的经济效益。
[0044] 另外，本领域技术人员还可于本发明精神内做其它变化，只要其不偏离本发明的 技术效果均可。这些依据本发明精神所做的变化，都应包含在本发明所要求保护的范围之 内。
Claims (10)
- 一种发光二极管灯具，包括：一光学部，包括至少一发光二极管光源；一电气部，包括至少一电路板及两灯头，用以提供发光二极管光源所需要的驱动电源、控制电路及电源管理；及一散热部，包括设于电气部的两灯头之间的一长管状的散热件，该散热件包括一散热基座及一散热板，并由所述散热基座与散热板围成一中空管体，发光二极管光源设于散热基座的外表面上，电气部的电路板设于该散热件的中空管体内，发光二极管所产生的热量经散热基座传至散热板并由散热板散发。
- 2. 如权利要求1所述的发光二极管灯具，其特征在于：该散热板的外表面至少有一部 分为凹凸面。
- 3. 如权利要求2所述的发光二极管灯具，其特征在于：散热板的凹凸面呈波浪形。
- 4. 如权利要求1所述的发光二极管灯具，其特征在于：该散热板的外表面上至少一部 分设有鳍片。
- 5. 如权利要求4所述的发光二极管灯具，其特征在于：该散热板包括分别与散热基座 的两侧相连接的两侧板及连接于该两侧板之间的一连接板，所述鳍片设于散热板的侧板 上。
- 6. 如权利要求l所述的发光二极管灯具，其特征在于：该散热件为一中空的矩形管件。
- 7. 如权利要求1所述的发光二极管灯具，其特征在于：该散热板包括分别与散热基座 之两侧相连接的两侧板及连接于该两侧板末端之间的一连接板，该中空管体由该散热基 座、该两侧板与该连接板共同围成。
- 8. 如权利要求1所述的发光二极管灯具，其特征在于：该电路板外套设有一绝缘件，所 述绝缘件设置于散热件的中空管体内。
- 9. 如权利要求1所述的发光二极管灯具，其特征在于：该光学部还包括罩设于发光二 极管光源上的导光罩，该导光罩的两侧边的末端分别向内延伸设有一凸缘，所述散热基座 与所述凸缘相对应的两侧边分别设有容置导光罩的凸缘的凹槽。
- 10. 如权利要求9所述的发光二极管灯具，其特征在于：所述灯头包括一端板、设于该端板外侧的一对插电杆、设于该端板内侧的一结合件及一定位件，该接合件凸伸至散热件 的中空管体内，该定位件凸伸至导光罩内。
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Also Published As
| Publication number | Publication date |
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| US8072124B2 (en) | 2011-12-06 |
| US20100171404A1 (en) | 2010-07-08 |
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