TWI257465B - Lighting device with high heat dissipation efficiency - Google Patents

Lighting device with high heat dissipation efficiency Download PDF

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Publication number
TWI257465B
TWI257465B TW093130725A TW93130725A TWI257465B TW I257465 B TWI257465 B TW I257465B TW 093130725 A TW093130725 A TW 093130725A TW 93130725 A TW93130725 A TW 93130725A TW I257465 B TWI257465 B TW I257465B
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TW
Taiwan
Prior art keywords
heat dissipation
dissipation efficiency
lighting device
high heat
light
Prior art date
Application number
TW093130725A
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English (en)
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TW200612058A (en
Inventor
Jen-Shyan Chen
Original Assignee
Neobulb Technologies Inc
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Priority to TW093130725A priority Critical patent/TWI257465B/zh
Priority to US11/019,161 priority patent/US7438448B2/en
Priority to JP2005002066A priority patent/JP4627189B2/ja
Publication of TW200612058A publication Critical patent/TW200612058A/zh
Application granted granted Critical
Publication of TWI257465B publication Critical patent/TWI257465B/zh
Priority to US12/216,268 priority patent/US20080265273A1/en

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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
    • F21V29/70—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
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/02—Electric lighting devices with self-contained electric batteries or cells characterised by the provision of two or more light sources
    • F21L4/022—Pocket lamps
    • F21L4/027—Pocket lamps the light sources being a LED
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/005—Electric lighting devices with self-contained electric batteries or cells the device being a pocket lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • 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
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • F21V29/677—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for discharging
    • 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
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • F21V29/717—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements using split or remote units thermally interconnected, e.g. by thermally conductive bars or 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
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Led Device Packages (AREA)

Description

1257465
【發明所屬之技術領域】 本發明係有關一種照明裝置，特別是關於一種具高散 熱效率之模組搭配高功率之照明源，此散熱模組特別是應 用在高功率照明裝置，強調避免光源位置之溫度過高。 【先前技術】 照明裝置在人們的生活裡， 人類在夜晚仰賴照明裝置從 或是車燈照明，都與人類的 從愛迪生發生電燈以來 就佔有一項非常重要的地位 事活動，小至手電筒、電燈 生活息息相關。 口 f1圖所示為目前高功率發光二極體應用於照明之成 抑示忍圖’在一實心金屬導熱板ίο，如鋁板上設置有_或 數個發光二極體（Light Emitting Diode)元件12，且在金 f =熱板10上位於發光二極體元件12周圍製作電路14，但 疋當發光二極體元件12為高功率時，僅僅利用金屬 10之^傳導作為散熱途徑，其散熱能力有限，使得發光元 件内=之二極體晶片因高溫而降低其發光效率，進而使光 源的f度不如預期，LED的壽命亦同時受到影響。 式熱導體是電子產品散熱模組廣為應用的傳 :體2 0、丰么^第2圖所不導體2包括有中空且密封的 ::動=織22與工作流體’熱導體内部處於真空狀 :顯示器（I .疋當熱源26，如消耗功率的晶片、CPU或液 二踹你=uid Cyrstal DisPlay ;lcd)接觸熱導體2的 -’使工作流體蒸發成氣態’汽化後的流體可
1257465 五、發明說明（2) 熱傳至腔體2的另一端，再經由冷卻設計使流體由氣相冷 凝成液相，再藉由毛細組織22將液態工作流體吸回受熱的 一端’以利用液氣相變化原理完成散熱或均熱效果。 有鑑於此，本發明係針對上述之困擾，提出一種具高 散熱效率之模組，並且將此概念應用在高功率照明裝置 上’以改善上述之缺失。 【發明内容】 主要目的，係在提供 功率照明裝置内設置 功率照明裝置所產生 而提升亮度。 另一目的，係在提供 功率照明裝置之殼體 熱效率，使照明裝置 述之目的，本發明係 包括一殼體，在殼體 坦部，且有數個散熱 熱效率，發光裝置設 熱迅速散播開，再透 電力裝置提供電力給 一種具高散熱效率之照 有熱導體及散熱韓片， 的高熱能，以使得散熱 一種具高散熱效率之照 上開設孔洞或設置風 之發光效率及高度可發 提出一種具高散熱效率 内設置有一熱導體，其 鰭片設置在熱導體周 立於熱導體之平坦部， 過散熱鰭片釋出熱能， 發光裝置，而使發光裝 本發明之 明裝置，在高 以用來發散高 效率提高，進 本發明之 明裝置，在高 扇，以提高散 揮到最大。 為達到上 之照明裝置， 一端具有一平 圍，以提高散 利用熱導體將 另外需搭配一 置發光。 底下藉由具體實施例配合所附的圖式詳加說明，當
第6頁 1257465
技術内容、特點及其所達成的功 容易瞭解本發明的目的 效0 【實施方式】 為了解決目前高功率光源應用於照明上所面臨散熱問 因此本發明提出一種具高散熱效率之高功率照明裝 置，可應用在任何一種照明裝置，例如手電筒、汽車車 二，燈等:藉由高散熱效率以獲得更好的發光效率並且 k局光源之壽命。 第3圖所不為本發明之具高散熱效率之照明裝置的結 構d視圖，具高散熱效率之照明裝置3包括一殼體3〇， 内設置有一熱導體32 ’如熱導管（heat 或 ，導柱（heat C〇lumn)，熱導體32 一端具有一平坦部此 ::部必須在#統熱導體製作㈣額外予以加工處理，孰 =3 2周圍需設置數個散熱錯片3 2 4與外界做熱對流以排 除熱1，且有一發光裝置34發ΨΙ、、店、，i Μ π 4 I出先/原以透出殼體30而用以 ’使發光裝置34設置於熱導體32之平坦部上，在此發 先裝置34上設置有二電極，在散熱體之另一端設有一電路 :36 ’如印刷電路板，力裝置3? ’如電池或交流轉換 ^流之電源供應器利用-電線連接到電路板36以形 接，電力裝置37可透過電路板36作電 送至發光裝置34,而提供電力至發裝〗輸 34發射光源，進而達到照明目的發褒置34並啟動發光裝置 第4圖及第5圖為熱導體與散熱韓片之立體圖及側視
1257465 五、發明說明（4) —-- 圓，熱導體32包括有一中空腔體32〇，其材質為銅， 空腔體3 20内容置一工作流體，且中空腔體32〇内呈真空狀 態，並在中空腔體320内設置有毛細結構（圖中未示），~ 工作流體受熱時，便會蒸發為氣態，藉由與散熱鰭片32S4 相接之一冷凝端將氣態流體凝結為液態，再由毛細結構將 工作流體吸回受熱端，藉由中空腔體結構，可將埶^ 播至散熱鰭片324。 '
並請同時參閱第6圖，第6圖所示為發光裝置之俯視 圖，發光裝置34可透過一基材340將發光源342，如發光二 極體設置在其上後後，再安置於平坦部上，電極344、346 設置在基材340上，並分別連接至每一發光源342，該基板 340之材質可以為矽，或者如第7圖所示，可直接將發光源 342，如發光二極體安置於中空腔體32〇之平坦部上，上述 一者之發光源342可以是利用打線（wire bonding)或覆晶 (f1 ip chip)晶片。
一且’散熱鰭片324具有多種實施態樣，如第8圖所示之 具回散熱效率之照明裝置的俯視圖，由圖中可知，每一散 熱鰭片324,係環設在中空腔體周圍，而散熱鰭片除了為圓 盤狀外’吏可如第9圖所示之不規則狀，此不規則狀可為 ，齒狀、花瓣狀或在鰭内製作氣流導通孔等，其材質可以 疋=或銘為底材製作而成，且可容置入殼體3〇内之形狀皆 包含在内’或者如第10圖所示，散熱鰭片324係以中空腔 體為中〜而成放射狀’係為_片片自中空腔體垂直由内向 外延伸出，且如第11圖所示，在每一個環設在中空腔體
1257465
第9頁 1257465
e 1257465 圖式簡單說明 26熱源 3具高散熱效率之高功率照明裝置 30殼體 34發光裝置 37電力裝置 320中空腔體 324散熱鰭片 342發光源 326 洞口 3 0 2孔洞 32熱導體 36電路板 340基材 344、346 電極 38風扇
第11頁

Claims (1)

1257465 六、申請專利範圍 種具高散熱效率之照明裝置，包括 端係具有 一熱導體，其係設置於該殼體内，該熱導體 一平坦部； 至少一散熱鰭片，其係設置於該殼體内並位於該熱導體 周圍’用以散熱； 一發光裝置，其係設置於該熱導體之平坦部，並發出光 源以經由殼體而照明；以及 一電力裳置’係與該發光裝置形成電連接’以提供該發 光裝置所需之電力。 進 2·如申請專利範圍第1項所述之具高散熱效率之照明裝 置，其中，該殼體上係開設至少一孔洞，以增加對流 而增加散熱效率。 3 ·如申清專利範圍第1項所述之具同政熱效率之照明裝 置，其中，每一該散熱錄片係環設於該熱導體周圍。 4·如申請專利範圍第3項所述之具高散熱效率之照明裝 置，其中，每一該散熱鰭片係為圓盤狀。 5 ·如申請專利範圍第3項所述之具高散熱效率之照明裝 置，其中，每一該散熱鰭片係為不規則狀。 更 6·如申請專利範圍第1項所述之具高效率之照明裝置， 包括一電路板，其係設置於該殼體内並位於該熱導體另一 端，並連接至該電力裝置，以使該發光裝置利用該電路板 與該電力裝置形成電連接。 7 ·如申請專利範圍第6項所述之具高散熱效率之照明裝 第12頁 I257465 申清專利範圍 置’其中，該電路板係為印刷電路板。 8 ·如申請專利範圍第1項所述之具高散熱效率之照明裝 ^ ’其中’該發光裝置包含一基材，並在該基材上設置至 匕一發光源，且有二電極設置於該基材上，該發光源發出 光線以透出該殼體，且該二電極分別連接該發光源。 •如申請專利範圍第8項所述之具高散熱效率之照明裝 置’其中，該基材係由矽材質所構成者。 I 〇 ·如申晴專利範圍第8項所述之具高散熱效率之照明裝 置’其中，該發光源係為發光二極體。 II ·如申請專利範圍第1項所述之具高散熱效率之照明裝 置’其中’該發光裝置係包含至少一發光二極體。 12 ·如申睛專利範圍第7項所述之具高散熱效率之照明裝 置’其中’每一該散熱鰭片上係開設至少一洞口，以使每 =該電線穿過該等洞口以與該電路板形成電連接，藉以使 該電力裝置提供電力至該發光裝置。 1 3 ·如申晴專利範圍第7項所述之具高散熱效率之照明裝 置’更包括一風扇，其係設置於該殼體内並位於該電路板 下方’以增加散熱效率。 1 4·如申請專利範圍第1 3項所述之具高散熱效率之照明裝 f ’其中’該風扇係與該電路板連接，以使該電路板利用 一控制電路控制該風扇之開關作動。 15·如申請專利範圍第14項所述之具高散熱效率之照明裝 置其中’該控制電路係偵測該發光裝置周圍之溫度，以 控制該風扇之開關作動。
1257465 六、申請專利範圍 16.如申請專利範圍第1項所述之具高散熱效率之照明裝 置’其中’該電力裝置係為電池或交流轉換直流之電源供 應器。 17·如申請專利範圍第1項所述之具高散熱效率之照明裝 置’其中’該熱導體係選自熱導柱或熱導管。
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