CN101660715B - 发光二极管灯具 - Google Patents

发光二极管灯具 Download PDF

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CN101660715B
CN101660715B CN2008103041741A CN200810304174A CN101660715B CN 101660715 B CN101660715 B CN 101660715B CN 2008103041741 A CN2008103041741 A CN 2008103041741A CN 200810304174 A CN200810304174 A CN 200810304174A CN 101660715 B CN101660715 B CN 101660715B
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housing
emitting diode
radiator
light
pedestal
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CN101660715A (zh
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丁俊
杨林
余业飞
查新祥
郭哲豪
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Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen Co Ltd
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Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen Co Ltd
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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
    • F21V29/50—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
    • 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
    • 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
    • F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
    • 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
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • 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]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

一种发光二极管灯具，包括一灯罩、一散热器及至少一发光二极管模组，该灯罩包括一内凹的壳体，该壳体的顶部设有一开口，该散热器收容于该壳体中，该至少一发光二极管模组贴设在该散热器的底部并与该壳体的内壁间隔相对，该至少一发光二极管模组发出的至少部分光线先照射到该壳体的内壁上，然后通过该内壁反射向该开口的外侧照射。所述发光二极管模组的光线均会先经过该灯罩的内表面反射，然后从该开口照射出去。因此，人眼从该灯具的开口的外侧任何角度都不能直接看到这些发光二极管模组所发出的光线，从而该发光二极管灯具可提供形成较为柔和的面光源，避免了眩光现象。

Description

发光二极管灯具
技术领域
本发明涉及一种照明装置，特别是指一种发光二极管灯具。
背景技术
发光二极管作为一种新兴的第三代光源，因其具有工作寿命长、节能、环保等优点而普遍被市场看好。由发光二极管组成的模组能产生高亮度的光源，正日益取代白炽灯等现有的光源在灯具中得到应用，比如室内照明灯具。然而，发光二极管模组提供的是点光源，容易造成眩光，肉眼直视该点光源会感到不适，严重地甚至会损伤眼睛。
发明内容
有鉴于此，有必要提供一种光效柔和的发光二极管灯具。
一种发光二极管灯具，包括一灯罩、一散热器及两发光二极管模组，该灯罩包括一内凹的壳体及两端板，该壳体沿纵长方向延伸，该壳体包括一底板及自该底板相对两侧倾斜延伸的两侧板，该壳体的横截面积为拱形，该两端板分板连接于该壳体的纵向两端，该壳体及该两端板合围成一凹槽，该凹槽的宽度自该壳体的底板向侧板的自由末端逐渐变宽，散热器包括一基座及自该基座的底部一体向外延伸的若干散热片，该基座沿纵长方向延伸并具有一V形的截面，该散热器收容于该凹槽中，该两发光二极管模组分别贴设在该散热器的基座的底部两侧，该两发光二极管模组朝向该壳体的底板的内壁，并与该壳体的内壁间隔相对，该壳体及端板的的内壁上涂覆有高反射性的材料，该两发光二极管模组发出的至少部分光线先照射到该壳体的内壁上，然后通过该壳体的内壁反射向该开口的外侧照射。
所述发光二极管模组的光线均会先经过该灯罩的内表面反射，然后从该开口照射出去。因此，人眼从该灯具的开口的外侧任何角度都不能直接看到这些发光二极管模组所发出的光线，从而该发光二极管灯具可提供形成较为柔和的面光源，避免了眩光现象。
下面参照附图，结合具体实施例对本发明作进一步的描述。
附图说明
图1是本发明的发光二极管灯具的一较佳实施例的立体组合图。
图2是图1所示发光二极管灯具的立体分解图。
图3是图2所示发光二极管灯具的倒置图。
图4是图1中沿IV-IV线的剖视图。
具体实施方式
请参照图1，所示为本发明一较佳实施例的发光二极管灯具100，该灯具100包括一灯罩10、两个发光二极管模组30及一散热模组50，该灯罩10为一内凹的壳体，该散热模组50通过螺钉60与该灯罩10连接，所述发光二极管模组30贴设在该散热模组50的底部并与该灯罩10的内表面间隔相对。
请同时参照图2与图3，该灯罩10包括一壳体11及两个端板13，该壳体11沿纵长方向延伸，其横截面大致成拱形。该壳体11包括一底板111及两个侧板113，该底板111位于该灯罩10的底部，该两个侧板113自该底板111的两侧倾斜向上延伸。该底板111具有一内壁1110，每一侧板113具有一内壁1130。
该两个端板13为梯形平板，该两个端板13分别一体连接于该壳体11的纵向两端，从而该壳体11与端板13合围形成一凹槽15。每一端板13具有一内壁130，所述内壁130、1110、1130面向该凹槽15。该灯罩10上与底板111相对的顶部设有一开口156，该凹槽15的宽度沿从该底板111到该开口156，即从底部往顶部的方向逐渐变宽。每一端板13上设有两个通孔136用于穿设螺钉60。所述内壁1110、1130及内壁130的表面涂附有高反射性的材料，比如镀镍或镀铝。
每一发光二极管模组30包括一基板31及若干发光二极管33。该基板31沿与该灯罩10的底板111平行的方向延伸。这些发光二极管33沿纵向均匀间隔地安装在该基板31上。该基板31通常为一电路板或是在其一侧覆盖一层印刷电路。
该散热模组50包括一散热器51及两个热管55。该散热器51包括一基座510及若干散热片512，该基座510沿纵向延伸并具有一Ｖ形截面。所述散热片512从该基座510的顶部一体向上延伸。该基座510的底部两侧分别开设有一条纵长延伸的凹槽515(见图3)，该两凹槽515用于收容所述热管55。
该两个热管55沿与该散热器51的基座510平行的方向延伸，每一热管具有一扁平的接触面550。该两个热管55对应收容于该基座510的凹槽515中，且该热管55的接触面550与该基座510的底面平齐。
装配时，所述热管55容置于散热器51的凹槽515中并可通过焊接或者粘结的方式固定，同时，该热管55的接触面550与该基座510的底面平齐。所述发光二极管模组30的基板31可通过螺丝或粘胶固定在该散热器51的基座510上，该两个发光二极管模组30分别位于该基座510的底部两侧。并且，该基板31对应覆盖在热管55上并与接触面550接触，该基板31与热管55之间还可涂覆导热膏以减少热阻。所述螺钉60从该灯罩10的纵向两端穿过所述通孔136并螺接于散热片512之间，从而将该散热器51及发光二极管模组30固定至灯罩10内凹槽15的中央并靠近壳体11的底板111的位置处，使各发光二极管33朝向灯罩10的底部设置。
在其他的实施例中，该散热模组50可不必包括热管55，而使发光二极管模组30的基板31直接贴设在散热器51的基座510上。
请同时参阅图4，每一发光二极管33具有一发光面330，该发光面330朝向该壳体11的底部并与底板111的内壁1110相对。该发光面330发出的一部分光线71首先照射到该内壁1110上，然后经反射向开口156的方向照射。该发光面330发出的另外一部分光线72首先照射到该内壁1110上，然后经反射照射到该侧板113的内壁1130上，接着通过内壁1130反射向开口156的方向照射。还有一部分光线73首先照射到该内壁1130上，然后经反射向开口156的方向照射。
总而言之，所述发光二极管模组30的光线均会先经过该灯罩10的内表面反射，然后从该开口156照射出去。因此，人眼从该灯具100的开口156的外侧任何角度都不能直接看到这些发光二极管模组30所发出的光线。通过灯罩10的内表面反射，发光二极管模组30的光线从该灯罩10的内侧的多个方向同时向该开口156的外侧照射，从而形成较为柔和的面光源，避免了眩光现象。
由于该发光二极管模组30的基板31直接贴设在热管55及散热器51的基座510上，所述发光二极管33工作时产生的热量可通过该散热模组50得到迅速、有效地散发，从而可保证该发光二极管模组30处于正常工作状态。
在其他实施例中，发光二极管33的大部分光线需经过灯罩10的内表面的反射，而部分光线也可不经由灯罩10的内表面的反射，而直接射向开口156，这样在较大程度上也能缓解眩光产生。

Claims (5)

1.一种发光二极管灯具，包括一灯罩及两发光二极管模组，该灯罩包括一内凹的壳体及两端板，其特征在于：该灯具还包括一散热器，该壳体沿纵长方向延伸，该壳体包括一底板及自该底板相对两侧倾斜延伸的两侧板，该壳体的横截面积为拱形，该两端板分板连接于该壳体的纵向两端，该壳体及该两端板合围成一凹槽，该凹槽的宽度自该壳体的底板向侧板的自由末端逐渐变宽，散热器包括一基座及自该基座的底部一体向外延伸的若干散热片，该基座沿纵长方向延伸并具有一V形的截面，该散热器收容于该凹槽中，该两发光二极管模组分别贴设在该散热器的基座的底部两侧，该两发光二极管模组朝向该壳体的底板的内壁，并与该壳体的内壁间隔相对，该壳体及端板的的内壁上涂覆有高反射性的材料，该两发光二极管模组发出的至少部分光线先照射到该壳体的内壁上，然后通过该壳体的内壁反射向该开口的外侧照射。
2.如权利要求1所述的发光二极管灯具，其特征在于：还包括两热管，每一热管设于该散热器的基座一侧与该一该发光二极管模组之间。
3.如权利要求2所述的发光二极管灯具，其特征在于：该散热器的基座的底部的两侧分别开设一凹槽用于收容一热管，每一热管具有一扁平的接触面，该接触面与该基座的底面平齐。
4.如权利要求2所述的发光二极管灯具，其特征在于：所述每一发光二极管模组包括一基板及若干发光二极管，所述基板贴设在该散热器的基座的底部。
5.如权利要求1所述的发光二极管灯具，其特征在于：若干螺钉穿过该灯罩的端板并螺接于该散热器上，从而将该散热器与该灯罩连接固定。
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