CN101463989A - 水底照明灯 - Google Patents

水底照明灯 Download PDF

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CN101463989A
CN101463989A CNA2007102031593A CN200710203159A CN101463989A CN 101463989 A CN101463989 A CN 101463989A CN A2007102031593 A CNA2007102031593 A CN A2007102031593A CN 200710203159 A CN200710203159 A CN 200710203159A CN 101463989 A CN101463989 A CN 101463989A
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illumination device
underwater illumination
lens
lamp housing
pedestal
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CN101463989B (zh
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徐弘光
王君伟
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Foxsemicon Integrated Technology Shanghai Inc
Foxsemicon Integrated Technology Inc
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Foxsemicon Integrated Technology Shanghai Inc
Foxsemicon Integrated Technology Inc
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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
    • F21V29/70—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
    • F21V29/763—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 the direction of the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • F21V29/56—Cooling arrangements using liquid coolants
    • F21V29/58—Cooling arrangements using liquid coolants characterised by the coolants
    • 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
    • F21V29/83—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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2121/02—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00 for fountains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/308—Lighting for domestic or personal use for aquaria
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/401—Lighting for industrial, commercial, recreational or military use for swimming pools
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

Abstract

一种水底照明灯，包括一个灯壳、一个固态发光器件及一个透镜，所述透镜设于该灯壳的一端并与灯壳形成一个容置空间，固态发光器件收容在该容置空间内，所述固态发光器件的出光面与透镜相对设置，其中该水底照明灯设有至少一个供水进入灯壳的容置空间内的第一开口；该水底照明灯还包括另一透镜，所述另一透镜设于固态发光器件上。本发明水底照明灯通过设置供水进入灯壳的容置空间内的第一开口，可有效提升固态发光器件的光利用效率及散热效率。

Description

水底照明灯
技术领域
本发明涉及一种水底照明灯，特别是关于一种采用固态发光器件照明的水底照明灯。
背景技术
目前，LED(Light Emitting Diode，LED)因具光质佳(也即LED光源射出的光谱)及发光效率高等特性而逐渐取代冷阴极荧光灯(Cold Cathode Fluorescent Lamp，CCFL)作为照明装置的发光元件，具体可参阅Michael S.Shur等人在文献Proceedings of theIEEE，Vol.93，No.10(2005年10月)中发表的“Solid-State Lighting：TowardSuperior Illumination”一文。LED作为一种固态发光器件，与传统光源相比，还具有光源寿命长、工作电压低、控制方便、可实现七彩变色效果等诸多优点，因此在游泳池、喷水池、船舰、鱼池、水族箱等水中环境，采用LED照明灯来进行照明或装饰比采用传统光源更具安全性且具更佳照明效果。
美国专利公告第6,971,760号中揭示了一种用于游泳池中照明的水底照明灯，该水底照明灯采用LED作为光源，其包括一灯体、一灯壳及一透镜，该灯壳的一端呈开口状，该透镜设于灯壳的开口处并将灯壳内部密封，所述透镜与灯壳共同形成一容置空间。该灯体设于该容置空间内，灯体的一端安装于灯壳内所设安装座内，灯体的另一端设有若干呈阵列分布的LED，所述LED与透镜之间形成一空气层，LED发出光依次穿过空气层与透镜后再入射至水中。其中，所述LED外层设有封装壳体，所述封装壳体一般由环氧树脂或硅胶等透明高分子材料制成，其折射率(Refractive Index)约为1.5，而空气的折射率为1.0，由斯涅耳定律(Snell’s Law)可知，由LED所产生的部分光线自LED的封装壳体入射到该空气层中时会在两者的界面发光全反射，其临界角约为42°，只有入射角小于42°的光线才能透过LED的封装壳体而进入该空气层，然后再经透镜入射至水中，很大一部分光线因发生全反射而无法进入该空气层，使得最终出射至水中的光大幅减少，从而降低LED所产生的光的利用效率。另外，温度对LED的发光效率影响较大，上述水底照明灯中LED的散热效果不佳，使得LED的发光效率不高。
发明内容
有鉴于此，有必要提供一种能够有效提高光的利用效率的水底照明灯。
一种水底照明灯，包括一个灯壳、一个固态发光器件及一个透镜，所述透镜设于该灯壳的一端并与灯壳形成一个容置空间，固态发光器件收容在该容置空间内，所述固态发光器件的出光面与透镜相对设置，其中该水底照明灯设有至少一个供水进入灯壳的容置空间内的第一开口。
作为本发明的进一步改进，该水底照明灯还包括另一透镜，所述另一透镜设于固态发光器件上并与固态发光器件的出光面相对设置。
另外，所述灯壳包括一基座及设于该基座上的一侧壁，所述基座延伸设有若干散热鳍片。
与传统水底照明灯相比，本发明水底照明灯上设有第一开口，水底照明灯置于水中使用时，水可以经所述第一开口进入并充满灯壳与透镜所组成的容置空间，灯壳内于固态发光器件与所述一透镜之间形成一水层而取代传统水底照明灯中的空气层，本发明水底照明灯中由固态发光器件发出而入射至水层中的光增加，使得最终从水底照明灯出射的光相应增加，水底照明灯对光的利用效率得到有效提升。另由于灯壳内的容置空间填充有水，基座的内、外两个表面可以同时与水接触，水底照明灯工作时所产生的热量可由该基座的内、外两个表面有效散发，从而可提升固态发光器件的散热效率。
附图说明
下面参照附图，结合实施例对本发明作进一步描述。
图1是本发明水底照明灯第一实施例的结构示意图。
图2是图1所示水底照明灯置于水中使用时的示意图。
图3是本发明水底照明灯第二实施例的结构示意图。
图4是图3所示水底照明灯置于水中使用时的示意图。
具体实施方式
图1所示为本发明水底照明灯第一实施例的结构示意图，该水底照明灯10包括一灯壳11、一固态发光器件12及一透镜13，所述透镜13设于该灯壳11的一端并由该透镜13与灯壳11共同形成一容置空间111，固态发光器件12收容在该容置空间111内，其中所述透镜13与固态发光器件12的出光面124相对设置，所述灯壳11上设有两第一开口151，可供外界的液体如水等进入容置空间111内。
该灯壳11包括一环形的侧壁15及位于该侧壁15底端的一基座14，侧壁15顶端为一第二开口(图未标示)，该透镜13设于该侧壁15顶端的第二开口处，所述侧壁15与固态发光器件12及透镜13呈同轴设置。侧壁15对固态发光器件12起保护作用，同时还能够将由固态发光器件12发出并射向侧壁15内表面的光反射至透镜13上以增加光的利用效率。
固态发光器件12设于基座14上，其包括一封装基板121、一固态发光元件122及一透明封装体123，所述透明封装体123与固态发光元件122的出光面1221相对设置。基座14具有一第一表面141及背向该第一表面141的一第二表面142，该封装基板121设于基座14的第一表面141上。封装基板121配置有与外部电源相连的导电电极(图未示)，所述固态发光元件122设于该封装基板121上且与封装基板121电性连接。该固态发光元件122可为但不限于发光二极管芯片，例如红光、绿光、蓝光或紫外光发光二极管芯片。另外，该固态发光元件122并不限于一个，其可为若干个，例如两个、三个或更多。
透明封装体123设置于固态发光元件122上且覆盖住该固态发光元件122以达到密封防水。该透明封装体123可由环氧树脂(Epoxy)或硅胶(Silicon)等透明的高分子材料制成，其折射率约为1.5。该固态发光器件12还可包括一透明隔水层16，所述透明隔水层16包覆于固态发光元件122及透明封装体123外，以进一步对固态发光器件12的固态发光元件122密封防水，该透明隔水层16同时还对固态发光元件122及透明封装体123起保护作用。所述透明隔水层16可采用玻璃、压克力(Acrylic)或聚碳酸酯(Polycarbonate)等具较高强度的透明材料制成，其折射率也大约为1.5。透明隔水层16与基座14之间进一步设有一密封元件18，以加强透明隔水层16的密封防水性，其中该密封元件18可为由橡胶制成的一O型环。
请一并参照图2，该侧壁15另设置有贯通侧壁15的两第一开口151，将该水底照明灯10置于水中时，水可以经该两第一开口151进入灯壳11内并充满灯壳11内的容置空间111，从而在固态发光器件12与透镜13之间形成一水层17。图2中箭头所示为固态发光元件122所产生的光的传播路线示意图，光由固态发光元件122发出，依次穿过透明封装体123、透明隔水层16、水层17及透镜13后照射至被照射物上。其中，透明封装体123的折射率大约是1.5，透明隔明层的折射率也大约是1.5，水的折射率约为1.3，由斯涅耳定律(Snell’s Law)可知，当光由透明隔水层16入射至水层17时会发生全反射，其临界角约为63°，只有入射角大于63°的光线才发生全反射而不能进入该水层17，与存在空气层的传统水底照明灯相比，水底照明灯10发生全反射的角度范围明显减小，将有更多的光线由固态发光器件12入射至水层17中，使得最终从透镜13出射的光相应增加，因此该水底照明灯10对光的利用效率得到大幅提升。
另外，在本实施例中，该基座14为一散热器，基座14的第二表面142向外延伸设有若干散热鳍片143。水底照明灯10工作时，固态发光器件12所产生的热量经封装基板121或其它热传导元件(图未示)传至基座14，再由基座14与水进行热交换以最终将热量散发出去。该基座14的第二表面142所设的散热鳍片143可以大幅提升基座14与水的热交换效率，从而有效地将固态发光器件12传至基座14的热量散发。另外，由于灯壳11内充满有水，使得基座14的第一表面141也能够与水进行热交换，而水的热传导率(Thermal conductivity)是空气的20倍以上，与传统具有空气层的水底照明灯相比，该水底照明灯10的散热效率得到进一步提升，从而使固态发光元件122的工作温度大幅降低。由于降低固态发光元件122的工作温度能够大幅地提高其发光效率，因此该水底照明灯10中固态发光元件122的发光效率也得到有效提升。
上述第一实施例中，灯壳11的侧壁15上设有第一开口151以供水进入并充满灯壳11内的容置空间111，其中该第一开口151也可设置在透镜13的边缘或基座14上。第一开口151的数目也可以仅为一个或者为多个。另外，该固态发光器件12的外层也可不设透明隔水层16，而仅由透明封装体123对固态发光元件122密封防水。
图3所示为本发明水底照明灯第二实施例的结构示意图，本实施例中的水底照明灯20同样包括一灯壳21、一固态发光器件22及与灯壳21相结合的一透镜23。该灯壳21包括环形的侧壁25及设于该侧壁25底端的一基座24，固态发光器件22设于基座的第一表面241上，基座24的第二表面242向外延伸设有若干散热鳍片243，固态发光器件22收容于由透镜23与灯壳21所组成的容置空间211内，该侧壁25上设有第一开口251以供水进入并充满该灯壳21内的容置空间211，其中该第一开口251也可设于透镜23的边缘或基座24上；该固态发光器件22包括一封装基板221、一固态发光元件222、一透明封装体223及一透明隔水层26，所述透明隔水层26与基座24之间设有密封元件261。本实施例与上述第一实施例的主要区别在于：本实施例中水底照明灯20还包括设于透明隔水层26上的另一透镜28，所述另一透镜28与固态发光器件22的出光面224相对设置；所述透镜23、28、固态发光器件22及灯壳21的侧壁25呈同轴设置，当水底照明灯20置于水中时，水由第一开口251进入到灯壳21内的容置空间211，并在两透镜23与28之间形成一水层27(图4所示)；通过在透明隔水层26外设置该另一透镜28，固态发光元件222发出的光可先由该另一透镜28聚集后再入射至水层27中，与第一实施例相比，本实施例中由固态发光元件122发出而入射至水层27中的光线进一步增加，使得最终从透镜23出射的光相应增加，该水底照明灯20对光的利用效率得到进一步提升。
另外，侧壁25的第一开口251处还设置一滤网29，该滤网29可避免污染物进入该水底照明灯20的灯壳21内。前述第一实施例中同样也可以于侧壁15的第一开口151处设一滤网。
上述第二实施例中，也可以不设置透明隔水层26，此种情况下，该另一透镜28直接设于该透明封装体223及封装基板221上。
由上述可知，本发明水底照明灯上设有第一开口，水底照明灯置于水中时，水可经所述第一开口进入并充满灯壳内的容置空间，灯壳内于透镜与固态发光器件之间形成一水层而取代传统水底照明灯中的空气层，水的折射率约为1.3，而空气的折射率仅为1.0，相比之下，本发明水底照明灯中固态发光器件发出的光入射至水层中的光增加，使得最终从水底照明灯的透镜出射的光相应增加，水底照明灯对光的利用效率得到有效提升。由于灯壳内的容置空间填充有水，使得灯壳的基座的第一、第二两个表面可以同时与水接触，基座的第二表面另设有若干可增加散热面积的散热鳍片，因此，该基座可以有效地将固态发光器件传至基座上的热量散发，从而提升固态发光器件的发光效率。
可以理解的是，本发明所述的水底照明灯也可以用于其他液体环境中进行照明，对于本领域的普通技术人员来说，可以根据本发明的技术构思做出其它各种对应的改变与变形，而所有这些改变与变形都应属于本发明权利要求的保护范围。

Claims (10)

  1. 【权利要求1】一种水底照明灯，包括一个灯壳、一个固态发光器件及一个透镜，所述透镜设于该灯壳的一端并与灯壳形成一个容置空间，固态发光器件收容在该容置空间内，所述固态发光器件的出光面与透镜相对设置，其特征在于：该水底照明灯设有至少一个供水进入灯壳的容置空间内的第一开口。
  2. 【权利要求2】如权利要求1所述的水底照明灯，其特征在于：所述至少一个第一开口设于该透镜或灯壳上。
  3. 【权利要求3】如权利要求1所述的水底照明灯，其特征在于：该灯壳包括一个环形的侧壁及设于该侧壁一端的一个基座，侧壁的另一端为一个第二开口，该透镜设于该侧壁的第二开口处，所述固态发光器件包括一个封装基板，至少一个固态发光元件及与该固态发光元件的出光面相对设置的一个透明封装体，该封装基板设于该基座的一第一表面上，所述固态发光元件设于该封装基板上，该透明封装体覆盖住该至少一个固态发光元件。
  4. 【权利要求4】如权利要求3所述的水底照明灯，其特征在于：所述至少一个固态发光元件为发光二极管芯片。
  5. 【权利要求5】如权利要求3所述的水底照明灯，其特征在于：所述第一开口设于该灯壳的侧壁或基座上。
  6. 【权利要求6】如权利要求3所述的水底照明灯，其特征在于：所述基座具有背向第一表面的一第二表面，该基座于第二表面向外延伸设有若干散热鳍片。
  7. 【权利要求7】如权利要求3所述的水底照明灯，其特征在于：所述固态发光器件还包括一透明隔水层，该透明隔水层与基座共同包覆封装基板、固态发光元件及透明封装体。
  8. 【权利要求8】如权利要求7所述的水底照明灯，其特征在于：该透明隔水层与基座之间设有一密封元件。
  9. 【权利要求9】如权利要求1或7所述的水底照明灯，其特征在于：还包括另一透镜，所述另一透镜设于该固态发光器件上并与固态发光器件的出光面相对设置。
  10. 【权利要求10】如权利要求1所述的水底照明灯，其特征在于：所述第一开口处设有一滤网。
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