M353481 八、新型說明： 【新型所屬之技術領域】 本新型是關於一種發光二極體電路，特別是指一 種具有散熱風扇的發光二極體電路。 【先前技術】 高亮度發光二極體由於具有體積小、省電、壽命 長等環保的優點，極適合做為照明用途，而成為近年 來許多廠商競相開發的熱門燈具產品。 如圖1所示，是習知一種發光二極體燈電路，其 具有由複數發光二極體11串並聯組成的一燈組1〇，燈 組10的兩端連接一直流電源Vin(例如12V)。且為避免 燈組10之複數發光二極體11同時被點亮時產生的熱使 溫度過高而造成發光二極體u損壞，通常會對發光二 極體11進行主動式散熱，亦即該電路會在燈組1〇的兩 端連接一散熱風扇12以對該等發光二極體u進行散熱 。且為了讓散熱風扇12維持在低速運轉以免產生過大 呆曰’需要限制k供給散熱風扇12的工作電壓vin (例 如5V)，因此需要在燈組1〇的一端與散熱風扇12之間 再串接一電阻R ’以限制散熱風扇12的工作電壓維持 在5V。 但是習知的問題是除了使用電阻r會額外消耗功 率並徒生熱源外’當散熱風扇12壞掉時，因為不能再 降溫且沒有警告機制’將會使該等發光二極體在無預 &的情況下因溫度過兩過熱而損壞。 5 M353481 【新型内容】 本新型的目的在於提供一種不會造成額外功率消 =可避免發光二極體不致過熱損壞的發光二極體燈 .爲達到上述目的，本新型發光二極體電路，包括 第—燈組，具有第二端及複數盘該 第：及第二端電連接且彼此串並聯之發光二極體： 第7燈組’具有一第三端、一第四端及複數與該第 :及第二端電連接且彼此串並聯之發光二極體，且該 第三端與該第-端電連接；及—散熱風扇，具有正、X 負兩電源輸入端，*中一電源輸入端連接該第二燈組 的第四端，另一電源輸入端連接該第_燈組的第二端 其中該第一端及第二端接受一直流電壓輸入，該 第一燈組包括n個並聯的燈串，每一燈串包含瓜個串 聯的I光一極體，該第二燈組包括p個並聯的燈串， 每一燈串包含q個串聯的發光二極體，其中p小於η 且q小於m ’較佳地’ n=16 ’ m=7 ’ p=3，q=5且該直 流電壓為12V。 車乂佳地’該第二燈組之該等發光二極體排列成一 特定圖案，或者該第二燈組之該等發光二極體排列成 一圍繞該第一燈組之該等發光二極體的特定圖案，或 者該第二燈組之該等發光二極體分佈設置在該第一燈 組之該等二極體之間，以在該第一燈組點亮而該第二 M353481 燈組未被點亮時產生一特定圖案。 本發明利用發光二極體電路中的一部分發光二極 體做為限制散熱風扇工作電壓的元件以取代習知電阻 ’不但可以減少功率消耗，而且當散熱風扇壞掉時， 該部分發光二極體將不會被點亮而可以避免電路的整 體溫度上升，並且讓使用者可以容易察覺散熱風扇損 壞與否。 ' 【實施方式】M353481 VIII. New Description: [New Technology Field] The present invention relates to a light-emitting diode circuit, and more particularly to a light-emitting diode circuit having a heat-dissipating fan. [Prior Art] High-brightness light-emitting diodes are extremely suitable for lighting purposes because of their small size, power saving, long life and other environmental protection effects, and have become popular lighting products developed by many manufacturers in recent years. As shown in FIG. 1 , it is a conventional light-emitting diode lamp circuit having a lamp group 1 组成 composed of a plurality of light-emitting diodes 11 connected in series and in parallel. The two ends of the lamp group 10 are connected to a DC power source Vin (for example, 12V). ). In order to prevent the heat generated when the plurality of light-emitting diodes 11 of the lamp group 10 are simultaneously illuminated, the temperature of the light-emitting diodes is too high, and the light-emitting diodes 11 are generally damaged. The circuit connects a heat dissipating fan 12 at both ends of the lamp group 1 to dissipate the light emitting diodes u. In order to keep the cooling fan 12 at a low speed to avoid excessive stagnation, it is necessary to limit the operating voltage vin (for example, 5 V) of the cooling fan 12 to be supplied. Therefore, it is necessary to connect the end of the lamp unit 1 与 to the cooling fan 12 in series. A resistor R' is used to limit the operating voltage of the cooling fan 12 to 5V. However, the conventional problem is that in addition to using the resistor r, it will consume additional power and the heat source will be 'when the cooling fan 12 is broken, because it can no longer cool down and there is no warning mechanism', the light-emitting diodes will be pre- & In the case of damage due to overheating of the temperature. 5 M353481 [New content] The purpose of this new type is to provide a light-emitting diode lamp that does not cause additional power consumption. It can avoid the damage of the light-emitting diode without overheating. To achieve the above purpose, the novel light-emitting diode circuit includes a first light group having a second end and a plurality of disks: the light emitting diode electrically connected to the second end and connected in series with each other: the seventh lamp group 'having a third end, a fourth end, and a plurality a light-emitting diode electrically connected to the second end and connected in series and in parallel with each other, wherein the third end is electrically connected to the first end; and the heat-dissipating fan has two positive and negative power input terminals, and one of the power sources The input end is connected to the fourth end of the second lamp group, and the other power input end is connected to the second end of the _th lamp group, wherein the first end and the second end receive a DC voltage input, and the first lamp group includes n a parallel light string, each light string comprising a series of I light one poles, the second light group comprising p parallel light strings, each light string comprising q series light emitting diodes, wherein p is smaller than η and q is less than m ' preferably ' n=16 ' m=7 ' p=3, q=5 and the straight The current voltage is 12V. Preferably, the light emitting diodes of the second light group are arranged in a specific pattern, or the light emitting diodes of the second light group are arranged to surround the light emitting diodes of the first light group a specific pattern, or the light emitting diodes of the second light group are disposed between the diodes of the first light group to illuminate the first light group and the second M353481 light group A specific pattern is produced when not lit. The invention utilizes a part of the light-emitting diode in the light-emitting diode circuit as a component for limiting the working voltage of the heat-dissipating fan to replace the conventional resistor, which not only reduces power consumption, but also when the heat-dissipating fan is broken, the partial light-emitting diode It will not be lit and the overall temperature rise of the circuit can be avoided, and the user can easily detect whether the cooling fan is damaged or not. 'Embodiment】
有關本新型之前述及其他技術内容、特點與功效 在以下配合參考圖式之一較佳實施例的詳細說明中 '將可清楚的呈現。 蒼閱圖2，是本新型發光 似版电纷 ^ ^ " 丁入丨主貝々也 例’其主要被應用在如圖3所示的一發光二極體燈具2 中做為-燈源’並包括複數組設在一電純細上'的 發光-極體20及-散熱風扇23。且由於發光二極體燈 具2的其它組成構件係為習知且非本案重點，因此以 下主要說明本實施例的發光二極體電路。 如圖2所示’在本實施例中，該等發光二極體加 被分成-第-燈組21及一第二燈组22。第一燈組 做為主要燈源，第二燈組22做為輔助燈源，而且更重 要的是’在本實施例中，第二燈組22主要用以與散執 風扇23 _接以限制提供給散熱風扇23的工作電壓。… ^ 一燈組21具有一第—端211、一第二端212及 複數與該第-端211及第二端212電連接且彼此串並聯 7 M353481 之發光二極體24。第一端211與第二端212連接一直 流電源Vin，在本實施例中’直流電源vin為12V，且 第一燈組21包括16個並聯的燈串，每一燈串包含7 個串聯的發光二極體24，這個數量的發光二極體24剛 好可以被12V直流電源Vin驅動，當然本實施例使用 的發光二極體24數量並不以此為限，可以根據實際應 用以及直流電源Vin的大小做適當的調整。 第二燈組22具有一第三端221、一第四端222及 複數與該弟二端221及第四端222電連接且彼此串並 聯之發光二極體25。且第二燈組22的第三端221與第 一燈組21的第一端221電連接。 散熱風扇23是一直流風扇，具有正、負兩電源輸 入端231、232。由於本實施例之第一燈組21需要以 12V直流電源Vin驅動，若散熱風扇23也以12V直流 電源Vin驅動會因轉速較高而產生過大噪音，而且，本 實施例只要散熱風扇在低轉速運轉即可達到散熱效果 ，所以為了降低散熱風扇的噪音，有必要降低提供給 散熱風扇的工作電壓以將散熱風扇的轉速降低。 因此在本實施例中，為了將輸入散熱風扇23的工 作電壓降低至例如5 V，第二燈組22包括3個並聯的燈 串，每一燈串包含5個串聯的發光二極體25，且這個 數量的發光二極體25可以用掉7V的電壓。所以將散 熱風扇23的其中一電源輸入端231連接第二燈組 的第四端222，另一電源輪入端232連接該第一燈組 M353481 21的第二端2丨2，以第二燈組22取代上述習知的電阻 R，即可將散熱風扇23的工作電壓限制在5 v而降低散 熱風扇23的轉速’如此不但可以讓功率不致徒然消耗 在電阻R上，而且當散熱風扇23壞掉時，由於第二燈 組22因為斷路無法點免’只有第一燈組21被點亮， 可以減少熱量的產生，使溫度不致因散熱風扇23壞掉 而上升太多，而避免發光二極體不致因整體溫度過高 而損壞。 當然第二燈組22使用的發光二極體25數量並不 受本實施例限制，設計者可以根據實際應用針對散熱 風扇23所需轉速及工作電壓適當調整第二燈組22使 用的發光二極體25數量。 此外，為了讓使用者可以發覺散熱風扇已壞掉， 本實施例更可以將第二燈組22中的發光二極體乃排 列成一特殊的圖案，例如令該等發光二極體25圍繞在 第一燈組21的外圍，或聚集在某一區塊或角落，或者 適當分佈在第一燈組21的該等發光二極體24之間， 以在第一燈組2i點亮而第二燈組22未被點亮時，產 生一足以讓使用者察覺但又不致影響照明功能的 圖案。 综上所述，本實施例主要利用發光二極體燈電路 令的一部分發光二極體做為限制散熱風扇工作電壓 元件以取代習知電m，藉此不但可以減少功率消耗： 而且當散熱風扇壞掉時，該部分發光二極體將不會被 9 M353481 點亮而可以避免電路的整體溫度上升，並且容易被使 用者察覺散熱風扇損壞與否。 - 惟以上所述者’僅為本新型之較佳實施例而已， 當不能以此限定本新型實施之範圍，即大凡依本新型 申請專利錢及新型㉟明内容所作之簡單㈣效變化 與修飾，皆仍屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1是本習知一種發光二極體燈電路； ， 圖2是本新型發光二極體燈電路的一較佳實施w 鲁 之電路圖；及 立圖3是本實施例之發光二極體燈具的側面剖視示The foregoing and other technical aspects, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. Cang reading Figure 2, this is a new type of luminous-like version of the electricity ^ ^ " Ding into the main shell of the shell also [example] is mainly used in a light-emitting diode lamp 2 as shown in Figure 3 as a light source 'And includes the illuminating-pole body 20 and the heat-dissipating fan 23 in which the complex array is disposed on an electric thin. Further, since the other constituent members of the light-emitting diode lamp 2 are conventional and not the focus of the present invention, the light-emitting diode circuit of the present embodiment will be mainly described below. As shown in Fig. 2, in the present embodiment, the light-emitting diodes are divided into a -th lamp group 21 and a second lamp group 22. The first light group is used as the main light source, the second light group 22 is used as the auxiliary light source, and more importantly, in the present embodiment, the second light group 22 is mainly used to limit the loose fan 23 _ The operating voltage supplied to the cooling fan 23. ... ^ A lamp group 21 has a first end 211, a second end 212 and a plurality of light emitting diodes 24 electrically connected to the first end 211 and the second end 212 and connected in series with each other 7 M353481. The first end 211 and the second end 212 are connected to the DC power supply Vin. In the present embodiment, the DC power supply vin is 12V, and the first light group 21 includes 16 parallel light strings, and each light string includes 7 serials. The LEDs 24, the number of the LEDs 24 can be driven by the 12V DC power supply Vin. Of course, the number of the LEDs 24 used in this embodiment is not limited thereto, and can be applied according to the actual application and the DC power supply Vin. The size is adjusted appropriately. The second lamp group 22 has a third end 221, a fourth end 222, and a plurality of LEDs 25 electrically connected to the second end 221 and the fourth end 222 and connected in series with each other. And the third end 221 of the second lamp group 22 is electrically connected to the first end 221 of the first lamp group 21. The cooling fan 23 is a direct current fan having positive and negative power supply terminals 231, 232. Since the first lamp group 21 of the embodiment needs to be driven by the 12V DC power source Vin, if the cooling fan 23 is also driven by the 12V DC power source Vin, excessive noise is generated due to the high rotation speed, and in this embodiment, as long as the cooling fan is at a low rotation speed. In order to reduce the noise of the cooling fan, it is necessary to reduce the operating voltage supplied to the cooling fan to reduce the rotation speed of the cooling fan. Therefore, in the present embodiment, in order to reduce the operating voltage of the input heat-dissipating fan 23 to, for example, 5 V, the second light group 22 includes three parallel light strings, each of which includes five light-emitting diodes 25 connected in series. And this number of light-emitting diodes 25 can use a voltage of 7V. Therefore, one of the power input ends 231 of the cooling fan 23 is connected to the fourth end 222 of the second lamp group, and the other power supply end 232 is connected to the second end 2丨2 of the first lamp group M353481 21 to the second lamp. The group 22 replaces the above-mentioned conventional resistor R, so that the operating voltage of the heat dissipation fan 23 can be limited to 5 v and the rotation speed of the heat dissipation fan 23 can be reduced. Thus, not only can the power not be consumed in the resistor R in vain, but also when the cooling fan 23 is broken. When it is dropped, since the second lamp group 22 cannot be avoided because of the open circuit, only the first lamp group 21 is lit, the heat generation can be reduced, so that the temperature does not rise too much due to the failure of the heat dissipation fan 23, and the light-emitting diode is avoided. The body will not be damaged due to the overall temperature being too high. Of course, the number of the light-emitting diodes 25 used by the second light group 22 is not limited by the embodiment. The designer can appropriately adjust the light-emitting diodes used by the second light group 22 according to the required rotation speed and operating voltage of the heat-dissipating fan 23 according to practical applications. The number of bodies 25 In addition, in order to allow the user to find that the cooling fan has been broken, the embodiment may further arrange the light-emitting diodes in the second lamp group 22 into a special pattern, for example, the light-emitting diodes 25 are surrounded by The periphery of a light group 21 is either concentrated in a certain block or corner, or suitably distributed between the light-emitting diodes 24 of the first light group 21 to light up at the first light group 2i and the second light When group 22 is not illuminated, a pattern is created that is sufficient for the user to perceive without affecting the illumination function. In summary, this embodiment mainly uses a part of the light-emitting diode of the light-emitting diode lamp circuit as a limitation of the operating voltage component of the heat-dissipating fan to replace the conventional power m, thereby not only reducing power consumption: but also cooling fan When it is broken, the part of the LED will not be illuminated by the 9 M353481 to avoid the overall temperature rise of the circuit, and it is easy for the user to detect whether the cooling fan is damaged or not. - The above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple (four) effect changes and modifications made by the new patent application money and the new 35 content. , are still within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a light-emitting diode lamp circuit; FIG. 2 is a circuit diagram of a preferred embodiment of the novel light-emitting diode lamp circuit; and FIG. 3 is the embodiment. Side cross-sectional view of a light-emitting diode lamp
10 M353481 【主要元件符號說明】 2 發光二極體燈具 200電路板 20、24、25發光二極體 22第二燈組 211第一端 221第三端 231、232電源輸入端 21第一燈組 23散熱風扇 212第二端 222第四端10 M353481 [Description of main components] 2 LEDs 200 circuit boards 20, 24, 25 LEDs 22 Second lamp group 211 First end 221 Third end 231, 232 Power input 21 First light group 23 cooling fan 212 second end 222 fourth end
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