201228474 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種LED照明裝置，尤其涉及一種led串-並聯 電路和包含該LED串-並聯電路的照明裝置。 【先前技術·】 [0002]發光二極體（LED)已經被廣泛的應用照明領域中而作為 發光光源。為了確保發光二極體的光照滿足照明的作用 ’市場各種LED照明裝置包括恒流驅動電路以提供穩定的 電流驅動發光二極體發光。這些LED照明裝置一般包括由 若干個發光二極體組成的LED串-並聯電路，LED照明裝置 中的恒流驅動電路接收電源電壓以提供穩定的電流驅動 上述LED串-並聯電路發光。然而，上述LEI)照明裝置的恒 流驅動電路一般只能保證L E D串-並聯電路的總電流穩定 。另外’各種LED製造工藝不能使得LE])串-並聯電路中每 一個發光二極體的電特性完全相同，因而不能確保流過 LED串-並聯電路中的每一扁篆―穩定。 〇 [0003] 【發明内容】 有繁於此’有必要提供一種1{：1)串_並聯電路從而解決 確保流過LED串-並聯電路中的每一顆發光二極體上的電 流穩定的問題。 [0004] 有必要提供種包含LED串-並聯電路的LED照明裝置。 [0005] 099146777 -種uim㈣置包括LED串_並聯電路和用於驅動㈣串 -並聯電路發光的恒流驅動電路1述ud串-並聯電路包 括至少兩條的UD串聯支路，所述每—所述⑽串聯支路 串聯連接極體後再與其他所述⑽串聯支路並聯 表單編號A0101 第3頁/共11頁 0992080356-0 201228474 連接。 [0006] [0007] [0008] [0009] [0010] [0011] 一種應用於照明裝置中的LED串-並聯電路，包括至少兩 個LED串聯支路，所述LED串聯支路由多個串聯連接的 LED。所述每一所述LED串聯支路串聯連接一恒流二極體 後與其他所述LED串聯支路並聯連接。 與現有技術相比，LED串-並聯電路中每一串聯支路上串 接一恒流二極體，當恒流驅動電路提供的電流發生變化 或某一串聯支路中LED被損壞後導致該支路上的電流發生 變化時，根據恒流二極體特徵，即能保證恒流二極體所 在支路電流穩定，從而確保LED串聯支路中的發光二極體 上電流穩定。 【實施方式】 下面結合實施例和附圖，對本發明進行詳細說明。 請參閱圖1，LED照明裝置10包括LED串—並聯電路7和用 於接收電源電壓以驅動Led串—遍聯電路7發光的恒流驅動 電路8。所述LED串-並聯電路7包括至少兩條⑽串聯支 路18 ’所述每-LED串聯支路18串聯連接一恒流二極體 20 (Current RegUiative Di〇de)。 請參閱®2 ’ LED串聯支路18包括若干個相互串聯連接的 UD (light~emitting di〇de，發光二極體）。在本實 施方式中，每一led串聯支路18通過一分壓電阻19與恒流 二極體20的陽極相連。所述恒流二極體2()的陰極均通過 電阻R1接地。 在其他實施方式中，請參閱圖3，所述恒流二極體2〇的陰 099146777 表單編號A0101 第4頁/共II頁 0992080356-0 201228474 極與LED串聯支路18的一端直接相連，陰極與所述分壓電 阻19相連。 [0012] 通過LED串-並聯電路7中每一串聯支路上串接一恒流二極 體20，當恒流驅動電路8提供的電流發生變化或任一串聯 支路中LED被損壞後導致該支路上的電流發生變化時，根 據恒流二極體20特徵，即能保證恒流二極體20所在支路 電流穩定，從而使得LED串聯支路18中的發光二極體上電 流穩定。 0 [0013] 本技術領域的普通技術人員應當認識到，以上的實施方 式僅是用來說明本發明，而並非用作為對本發明的限定 ，只要在本發明的實質精神範圍之内，對以上實施方式 所作的適當改變和變化都落在本發明要求保護的範圍之 内。 【圖式簡單說明】 [0014] 圖1為本發明一實施方式中LED照明裝置的模組圖。 [0015] 圖2為圖1所示LED照明裝置中的LED串-並聯電路一種實 ❹ 施方式中的電路圖。 [0016] 圖3為圖1所示LED照明裝置LED串-並聯電路另一實施方 式中的電路圖。 【主要元件符號說明】 [0017] LED照明裝置：10 [0018] LED串-並聯電路：7 [0019] 恒流驅動電路：8 099146777 表單編號A0101 第5頁/共11頁 0992080356-0 201228474 [0020] LED串聯支路：1 8 [0021] 分壓電阻·· 1 9 [0022] 恒流二極體：20 [0023] 電阻：R1 0992080356-0 099146777 表單編號A0101 第6頁/共11頁201228474 VI. Description of the Invention: [Technical Field] The present invention relates to an LED lighting device, and more particularly to a LED string-parallel circuit and a lighting device including the LED string-parallel circuit. [Prior Art] [0002] A light-emitting diode (LED) has been widely used as an illuminating light source in the field of illumination. In order to ensure that the illumination of the LEDs satisfies the role of illumination, various LED illumination devices in the market include a constant current drive circuit to provide a stable current to drive the LED illumination. These LED lighting devices generally include an LED string-parallel circuit composed of a plurality of light-emitting diodes, and a constant current driving circuit in the LED lighting device receives a power supply voltage to provide a stable current to drive the LED string-parallel circuit to emit light. However, the constant current driving circuit of the above LEI) lighting device generally only ensures that the total current of the L E D series-parallel circuit is stable. In addition, the various LED manufacturing processes cannot make LE] the electrical characteristics of each of the LEDs in the series-parallel circuit to be identical, and thus it is impossible to ensure that each of the slabs flowing through the LED string-parallel circuit is stable. 〇[0003] [Summary of the Invention] It is necessary to provide a 1{:1) string-parallel circuit to solve the problem of ensuring current stability on each of the LEDs in the LED series-parallel circuit. problem. [0004] It is necessary to provide an LED lighting device including an LED string-parallel circuit. [0005] 099146777 - Uim (four) set including LED string_parallel circuit and constant current drive circuit for driving (four) series-parallel circuit illumination 1 ud series-parallel circuit includes at least two UD series branches, each of which The (10) series branch is connected in series with the pole body and then connected to the other (10) series branch in parallel with the form number A0101, page 3/11, 0992080356-0 201228474. [0009] [0010] [0011] A LED string-parallel circuit for use in a lighting device, comprising at least two LED series branches, the LED series routing routing multiple series connections LED. Each of the LED series branches is connected in series with a constant current diode and connected in parallel with the other LED series branches. Compared with the prior art, a constant current diode is connected in series in each series branch of the LED series-parallel circuit, and the current is changed when the current supplied by the constant current driving circuit is changed or the LED in a series branch is damaged. When the current on the road changes, according to the characteristics of the constant current diode, the current of the branch of the constant current diode can be stabilized, thereby ensuring the current stability of the LED in the LED series branch. [Embodiment] Hereinafter, the present invention will be described in detail in conjunction with the embodiments and the accompanying drawings. Referring to Fig. 1, the LED lighting device 10 includes an LED string-parallel circuit 7 and a constant current driving circuit 8 for receiving a power supply voltage to drive the Led string-pass circuit 7 to emit light. The LED string-parallel circuit 7 includes at least two (10) series branches 18'. Each of the LED series branches 18 is connected in series with a constant current diode 20 (Current RegUiative Di?de). Please refer to the ®2' LED series branch 18 which includes several UDs (light~emitting di〇de) connected in series. In the present embodiment, each of the led series branches 18 is connected to the anode of the constant current diode 20 through a voltage dividing resistor 19. The cathode of the constant current diode 2 () is grounded through a resistor R1. In other embodiments, please refer to FIG. 3, the negative current diode 2 〇 0 099146777 Form No. A0101 Page 4 / Total II page 0992080356-0 201228474 The pole is directly connected to one end of the LED series branch 18, the cathode It is connected to the voltage dividing resistor 19. [0012] A constant current diode 20 is connected in series through each series branch of the LED string-parallel circuit 7, and when the current supplied by the constant current driving circuit 8 changes or the LED in any series branch is damaged, the When the current on the branch changes, according to the characteristics of the constant current diode 20, the current of the branch of the constant current diode 20 can be stabilized, so that the current on the LED in the LED series branch 18 is stabilized. [0013] It should be understood by those skilled in the art that the above embodiments are merely illustrative of the present invention and are not intended to limit the invention, as long as they are within the spirit of the invention. Appropriate changes and modifications made by the means are within the scope of the claimed invention. BRIEF DESCRIPTION OF THE DRAWINGS [0014] FIG. 1 is a block diagram of an LED lighting device according to an embodiment of the present invention. 2 is a circuit diagram of an embodiment of an LED string-parallel circuit in the LED lighting device of FIG. 1. 3 is a circuit diagram of another embodiment of the LED string-parallel circuit of the LED lighting device of FIG. 1. [Main component symbol description] [0017] LED lighting device: 10 [0018] LED string-parallel circuit: 7 [0019] Constant current driving circuit: 8 099146777 Form number A0101 Page 5 of 11 0992080356-0 201228474 [0020 LED series branch: 1 8 [0021] Dividing resistor · · 1 9 [0022] Constant current diode: 20 [0023] Resistor: R1 0992080356-0 099146777 Form No. A0101 Page 6 of 11