TWI388766B - 燈具結構 - Google Patents

燈具結構 Download PDF

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Publication number
TWI388766B
TWI388766B TW099113707A TW99113707A TWI388766B TW I388766 B TWI388766 B TW I388766B TW 099113707 A TW099113707 A TW 099113707A TW 99113707 A TW99113707 A TW 99113707A TW I388766 B TWI388766 B TW I388766B
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Taiwan
Prior art keywords
heat dissipation
spacer
curved surface
light
lamp housing
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TW099113707A
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English (en)
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TW201137275A (en
Inventor
Jia Yi Juang
Yao Sheng Liu
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Cal Comp Electronics & Comm Co
Kinpo Elect Inc
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Priority to TW099113707A priority Critical patent/TWI388766B/zh
Priority to US12/786,441 priority patent/US8292477B2/en
Priority to JP2010004774U priority patent/JP3163017U/ja
Publication of TW201137275A publication Critical patent/TW201137275A/zh
Application granted granted Critical
Publication of TWI388766B publication Critical patent/TWI388766B/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/15Thermal insulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-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
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/23Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/233Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V25/00Safety devices structurally associated with lighting devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/71Cooling 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
    • F21V29/713Cooling 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 in direct thermal and mechanical contact of each other to form a single system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77Cooling 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
    • F21V29/773Cooling 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/86Ceramics or glass
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/001Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • F21V23/002Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Description

燈具結構
本發明是有關於一種燈具結構,且特別是有關於一種發光二極體(light emitting diode,LED)的燈具結構。
發光二極體具有省電、耐用以及體積小等優點,而且隨著製程的成熟,價格下降,近來以發光二極體做為光源之產品越來越普遍。
目前應用發光二極體作為照明燈具最主要的問題在於散熱問題。這會造成燈具的溫度上升,進而縮短發光二極體的壽命。透光罩內的螢光粉也會受到熱的影響而降低效率導致產出的光色改變,影響其色彩品質,整體燈具也會因為溫度過高而影響其燈具壽命。另外,一般使用發光二極體的照明燈具不具有抗靜電與耐高壓的效果,因而造成照明設備受到靜電放電與高壓的破壞,大大的降低發光二極體照明燈具的使用壽命。
本發明提供一種燈具結構,用以增加散熱效果,且避免受到靜電放電與高壓的破壞。
本發明提出一種燈具結構,包括一透光罩、一燈殼座、一環狀部、一隔離墊以及一燈板。燈殼座具有多個散熱鰭片,這些散熱鰭片環狀排列於燈殼座的外圍,且這些散熱鰭片鄰近透光罩的一端具有一凹槽,透光罩覆蓋於凹槽的頂部。環狀部連接於這些散熱鰭片鄰近透光罩的一端。隔離墊配置於凹槽的底部,並沿著凹槽的側壁延伸至透光罩的下方,以形成一隔離牆。燈板具有多個發光二極體元件,燈板設置於透光罩與隔離墊之間的容置空間中,以防止受到靜電放電的破壞。
在本發明之一實施例中,上述之燈具結構更包括一螺旋部,連接於燈殼座遠離透光罩的一端,這些散熱鰭片的外徑由透光罩向螺旋部的方向遞減。
在本發明之一實施例中,上述之各散熱鰭片具有一第一曲面與一第二曲面,第一曲面與第二曲面的相交處形成一彎折部,其中第一曲面連接於環狀部,第二曲面向螺旋部的方向延伸。
在本發明之一實施例中,上述之螺旋部具有一外螺紋以及一位於螺旋部遠離燈殼座的一端的導電體,且外螺紋與導電體彼此電性絕緣。
在本發明之一實施例中,上述之燈具結構更包括一驅動件以及二導線,配置於燈殼座的內部,驅動件的一端藉由一導線與導電體電性連接,而驅動件的另一端藉由另一導線穿過凹槽的底部以及隔離墊而與燈板電性連接。
在本發明之一實施例中,上述之隔離墊具有至少一貫孔部,而穿過貫孔部的導線與隔離墊不導電。
在本發明之一實施例中,上述之貫孔部的內壁周圍形成有一絕緣膠。
在本發明之一實施例中,上述之隔離墊與隔離牆為導熱不導電的絕緣體,其材質為選自陶瓷、塑膠、橡膠及玻璃的其中一種。
在本發明之一實施例中,上述之散熱鰭片為放射狀的片狀結構。
在本發明之一實施例中,上述之隔離墊與隔離牆組成一中空盒體。
基於上述,本發明利用可避免燈板及發光二極體受到靜電放電的破壞的隔離墊及隔離牆,進而提高燈具的使用壽命。且隔離墊為導熱不導電的絕緣層,可將燈板及發光二極體所產生的熱傳導至燈殼座外圍的散熱鰭片,進而加強燈具的散熱效果。
為讓本發明之上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。
圖1為本發明一實施例之燈具結構之立體圖。圖2為圖1之燈具結構的剖面示意圖。
請參照圖1及圖2,燈具結構100包括一透光罩110、一包覆於透光罩110外圍的環狀部120、一燈殼座130與一螺旋部140。燈板150具有多個發光二極體元件152,燈板152設置於透光罩110與隔離墊162之間的容置空間中,以避免受到靜電放電的破壞。透光罩110設置於燈殼座130的頂部,透光罩110的外表面110a大致上與環狀部120的上表面120a切齊,但是透光罩110亦可向外凸出而形成一杯狀透光罩,本發明不以此為限。螺旋部140則連接於燈殼座130的底部。燈殼座130的外圍具有多個散熱鰭片131,散熱鰭片131鄰近透光罩110的一端所形成的外徑大於透光罩110的外徑,且散熱鰭片130鄰近透光罩110的一端連接於環狀部120。環狀部120位於燈殼座130的上方並包覆於透光罩110外圍。環狀部120的內徑約為透光罩110的外徑,而環狀部120的外徑約等於散熱鰭片130鄰近透光罩110的一端的外徑。也就是說,透光罩110、環狀部120、燈殼座130以及螺旋部140基本上可組裝為一整體,以構成燈具的燈殼。
此外,散熱鰭片131可為片狀結構,其環狀排列於燈殼座130的外圍,如同是放射狀的片狀結構。這些散熱鰭片131的中間區域具有一凹槽131a,對應位於透光罩110的下方,且凹槽131a的尺寸大致上略小於透光罩110的尺寸,因此透光罩110可覆蓋於凹槽131a的頂部,並承靠於凹槽131a的周邊上,以密封膠(未繪示)予以封合而形成一密閉的空間。隔離墊162配置於凹槽131a的底部,並可沿著凹槽131a的側壁延伸至透光罩110的下方,以形成一隔離牆164。從圖2所示的縱向剖面來看,隔離墊162與隔離牆164可組成一中空盒體160,而隔離牆164的高度大於燈板150及發光二極體152的整體厚度。因此,當燈板150與發光二極體元件152配置於此密閉的空間時,燈板150與發光二極體元件152的底面與側面均受到隔離墊162及隔離牆164保護而與燈殼座130上所累積的電荷電性隔離,以避免受到靜電放電的破壞。再者,中空盒體160的本身材質特性搭配燈板150上的線路設計以及絕緣距離的增加,以達到耐高壓的優點。
在本實施例中,隔離墊162及隔離牆164為導熱不導電的絕緣體,其材質可為陶瓷或其他同效的材質,例如、塑膠、橡膠或玻璃。隔離墊162可預先形成至少一貫孔部162a,例如以雷射鑽孔,讓燈板150的電路輸入端可經由此貫孔部162a與其他電路元件相連。
另外,每個散熱鰭片131均有一第一曲面133與一第二曲面135,且第一曲面133與第二曲面135的相交處形成一彎折部134。第一曲面133的弧度設計會配合環狀部120的外徑,形成傾斜角度相近的弧面,並一致地向下延伸至彎折部134。彎折部134之後的第二曲面135的弧度則會配合螺旋部140的弧形結構,形成傾斜角度相近的弧面。因此,散熱鰭片131的外徑是由透光罩110向螺旋部140的方向遞減並分為兩個區段。上邊的區段由第一曲面133構成,下邊的區段由第二曲面135構成。
相鄰的散熱鰭片131與環狀部120之間會形成多個散熱通孔(未繪示),散熱通孔與相鄰的散熱鰭片131之間的溝槽相通。透光罩110周圍產生的熱氣可以透過散熱通孔與散熱鰭片131之間的空氣產生對流以增加散熱效果。由圖1可看出,散熱鰭片131在鄰近於透光罩110的一端所形成的外徑大於透光罩110的外徑,而環狀部120的外徑可大於散熱鰭片131所形成的外徑。藉此,可讓散熱通孔的空氣對流效果更好,加強其散熱的效果。
此外,螺旋部140具有一外螺紋142,可供燈具螺接一電源接頭(未繪示)時,外螺紋142與電源接頭的內螺紋互相螺合而固定。螺旋部140的底部具有一導電體144,其與外螺紋142彼此相隔且不導通,因此外螺紋142與導電體144在電性上彼此絕緣。另外,燈殼座130的內部配置有一驅動件170,例如是電路板及控制晶片之封裝體。驅動件170的一端可藉由導線172與位於螺旋部140的底部的導電體144電性連接,而驅動件170的另一端可藉由另一導線174穿過凹槽131a的底部以及隔離墊162的貫孔部162a而與燈板150電性連接。貫孔部162a的內壁周圍可形成一絕緣膠(未繪示),其為中空的膠體,可使穿過貫孔部162a的導線174與隔離墊162之間電性絕緣而無法彼此導電。
綜上所述,本發明利用可避免燈板及發光二極體受到靜電放電的破壞的隔離墊,進而提高燈具的使用壽命。且隔離墊為導熱不導電的絕緣層,可將燈板及發光二極體所產生的熱傳導至燈殼座外圍的散熱鰭片,進而加強燈具的散熱效果。
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明之精神和範圍內,當可作些許之更動與潤飾,故本發明之保護範圍當視後附之申請專利範圍所界定者為準。
100‧‧‧燈具結構
110‧‧‧透光罩
110a‧‧‧外表面
120‧‧‧環狀部
120a‧‧‧上表面
130‧‧‧燈殼座
131‧‧‧散熱鰭片
131a‧‧‧凹槽
133‧‧‧第一曲面
134‧‧‧彎折部
135‧‧‧第二曲面
140‧‧‧螺旋部
142‧‧‧外螺紋
144‧‧‧導電體
150‧‧‧燈板
152‧‧‧發光二極體元件
160‧‧‧中空盒體
162a‧‧‧貫孔部
162‧‧‧隔離墊
164‧‧‧隔離牆
170‧‧‧驅動件
172‧‧‧導線
174‧‧‧導線
圖1為本發明一實施例之燈具結構之立體圖。
圖2為圖1之燈具結構的剖面示意圖。
100...燈具結構
110...透光罩
110a...外表面
120...環狀部
120a...上表面
130...燈殼座
131...散熱鰭片
131a...凹槽
133...第一曲面
134...彎折部
135...第二曲面
140...螺旋部
142...外螺紋
144...導電體
150...燈板
152...發光二極體元件
160...中空盒體
162a...貫孔部
162...隔離墊
164...隔離牆
170...驅動件
172...導線
174...導線

Claims (10)

  1. 一種燈具結構,包括:一透光罩;一燈殼座,具有多個散熱鰭片,該些散熱鰭片環狀排列於該燈殼座的外圍,且該些散熱鰭片鄰近該透光罩的一端具有一凹槽,該透光罩覆蓋於該凹槽的頂部;一環狀部,連接於該些散熱鰭片鄰近該透光罩的該端;一隔離墊,配置於該凹槽的底部,並沿著該凹槽的側壁延伸至該透光罩的下方,以形成一隔離牆;以及一燈板,具有多個發光二極體元件,該燈板設置於該透光罩與該隔離墊之間的容置空間中,以防止受到靜電放電的破壞,其中隔離墊藉由透光罩接觸發光二極體元件以固定在燈板以及燈殼座的底部之間。
  2. 如申請專利範圍第1項所述之燈具結構,更包括一螺旋部,連接於該燈殼座遠離該透光罩的一端,該些散熱鰭片的外徑由該透光罩向該螺旋部的方向遞減。
  3. 如申請專利範圍第2項所述之燈具結構,其中各該散熱鰭片具有一第一曲面與一第二曲面,該第一曲面與該第二曲面的相交處形成一彎折部,其中該第一曲面連接於該環狀部,該第二曲面向該螺旋部的方向延伸。
  4. 如申請專利範圍第2項所述之燈具結構,其中該螺旋部具有一外螺紋以及一位於該螺旋部遠離該燈殼座的一端的導電體,且該外螺紋與該導電體彼此電性絕緣。
  5. 如申請專利範圍第4項所述之燈具結構,更包括一 驅動件以及二導線,配置於該燈殼座的內部,該驅動件的一端藉由一導線與該導電體電性連接,而該驅動件的另一端藉由另一導線穿過該凹槽的底部以及該隔離墊而與該燈板電性連接。
  6. 如申請專利範圍第5項所述之燈具結構,其中該隔離墊具有至少一貫孔部,而穿過該貫孔部的該導線與該隔離墊不導電。
  7. 如申請專利範圍第6項所述之燈具結構,其中該貫孔部的內壁周圍形成有一絕緣膠。
  8. 如申請專利範圍第1或6項所述之燈具結構,其中該隔離墊與該隔離牆為導熱不導電的絕緣體,其材質為選自陶瓷、塑膠、橡膠及玻璃的其中一種。
  9. 如申請專利範圍第1項所述之燈具結構,其中該些散熱鰭片為放射狀的片狀結構。
  10. 如申請專利範圍第1項所述之燈具結構,其中該隔離墊與該隔離牆組成一中空盒體。
TW099113707A 2010-04-29 2010-04-29 燈具結構 TWI388766B (zh)

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