201229428 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係與一種LED照明裝置有關，尤指一種利用LED照 明裝置之溫度與亮度來達到散熱管理的方法。 【先前技林f】 [0002] 按，LED ( L i ght-Emi tl: i ng D i ode，發光二極體）是一 種半導體元件，早期多被作為指示燈、顯示板等；而隨 著白光發光二極體的出現，也被用作照明。它已成為現 今常見的光源，具有效率高、壽命長、不易破損等傳統 燈泡所無法與之比擬的優點。 [0003] 然而，當LED於發光時，由於會產生高熱量而增加自身的 溫度，使其處於高溫的環境下，同時，LED在高溫下能量 轉換效率也會急速下降，變得浪費電力且會產生更多熱 量，使得溫度一再提昇，成為惡性循環，並會縮短其壽 命。因此，以往的LED照明裝置皆會為LED的光源背板提 供散熱元件，例如於燈杯上設置複數鰭片、裝設風扇等 等，甚至透過監控等方式，在LED的光源背板持續上升其 溫度時，利用增加風扇轉速的方式加強散熱效果，藉以 滿足其散熱需求。 [0004] 惟，傳統的作法雖然有助於減緩散熱問題，但若熱量持 續上升、或風扇轉速已達最高效能而無法助於降溫時， 則容易造成燈具的損壞、甚至因高溫所產生的意外等等 ，故仍不盡理想。 有鑑於此，本發明人係為改善並解決上述之缺失，乃特 100100053 潛心研究並配合學理之運用，終於提出一種設計合理且 表單編號A0101 第3頁/共10頁 1 [0005] 201229428 有效改善上述缺失之本發明。 【發明内容】 [0006] 本發明之主要目的，在於可提供一種LED照明裝置之散熱 管理方法，其係可偵測LED照明裝置的溫度，在到達設定 溫度後降低LED照明裝置的輸出亮度，以減少熱量產生； 若仍無法改善，還可以進一步關閉LED照明裝置，以進一 步達到安全與保護之目的。 [0007] 為了達成上述之目的，本發明係提供一種LED照明裝置之 散熱管理方法，包括一LED光源、以及一用以幫助該LED 光源進行降溫之風扇；該方法包括：於開啟的狀態下， 量測LED光源之溫度；當量測到的溫度到達第一溫度預設 值時，增加風扇之轉速；以及風扇的轉速已增加至最大 值、且量測到的溫度仍到達第一溫度預設值時，降低輸 出LED光源之亮度值。 【實施方式】 [0008] 為了使貴審查委員能更進一步瞭解本發明之特徵及技 術内容，請參閱以下有關本發明之詳細說明與附圖，然 而所附圖式僅提供參考與說明用，並非用來對本發明加 以限制者。 [0009] 請參閱第一圖，係為本發明之邏輯控制圖。本發明係提 供一種LED照明裝置之散熱管理方法，該LED照明裝置包 括一LED光源、以及一用以幫助該LED光源進行降溫之風 扇；該散熱方法之步驟如下： [0010] 首先，接通該LED照明裝置之電源而能開啟上述LED光源 100100053 表單編號A0101 第4頁/共10頁 1002000099-0 201229428 及風扇，如步驟S1 0。在該LED照明裝置使用一段時間後 、或持續處於開啟狀態下，如步驟SU，量測LED光源之 溫度’例如光源背板溫度TS等；所量測的光源背板溫度 Ts會與一預先設定的第一溫度預設值作判斷，以判斷光 源背板溫度Ts是否到達所述第一溫度預設值？即步驟S1 2 ;而在本發明所舉之實施例中，所述第一溫度預設值可 設為7 0度’若仍未達該數值時，則繼續量測光源背板溫 度Ts，直至光源背板溫度Ts到達第一溫度預設值，即進 入步驟S13 :增加上述風扇的轉速。 ❹_ Ο 承上所述，當風扇轉速增加且運行一段時間後，再進入 步驟S14 :再次量測且判斷光源背板溫度TS是否仍達到所 述第一溫度預設值（前述以70度為例）？若否，即可進 行步驟S15以降低風扇轉速，並回到步驟sii繼續量測光 源背板溫度Ts是否達到所述第一溫度預設值，以持續進 行步驟S11至S14 ;但若光源背板溫度TS仍達到所述第一 溫度預設值，則直接進入步驟S16來確認風扇轉速是否已 達最大值？此時，假若風扇轉速尚未達到最大值，則回 到步驟S13繼續增加風扇轉速；但若已達風扇轉速的最大 值’則進入步驟S17，以透過降低LED光源亮度值的方式 ，來減少L E D光源所產生的熱量。 [0012] 俟後’當LED光源的亮度值被降低後，再進行步驟S18判 斷光源背板溫度Ts是否達到一預先設定的第二溫度預設 值？而在本發明所舉之實施例中，所述第二溫度預設值 可設為90度，若仍未到達時則進入步驟S19以降低風扇轉 速；反之’則進入步驟S20 :關閉LED光源以避免其溫度 100100053 表單編號A0101 第5頁/共10頁 1002000099-0 201229428 持續上升。待一段時間後，進入步驟S21判斷光源背板溫 度Ts是否降低至一預先設定的第三溫度預設值？而在本 發明所舉之實施例中，所述第三溫度預設值可設為40度 ，若光源背板溫度Ts已低於所述第三溫度預設值，則代 表光源背板溫度Ts已降至安全或可容許的範圍内，而能 回到步驟10重新開啟LED燈具與風扇；但若仍未能降低至 第三溫度預設值，則持續維持步驟S20的狀態，關閉LED 燈具至光源背板溫度Ts下降。 [0013] 此外，關於第一、二或三溫度預設值的設定，第一溫度 預設值可小於或等於第二溫度預設值，而第三溫度預設 值則小於第一溫度預設值、亦小於第二溫度預設值。 [0014] 是以，藉由上述之步驟流程，即可得到本發明LED照明裝 置之散熱管理方法。 [0015] 因此，藉由本發明LED照明裝置之散熱管理方法，主要係 透過風扇轉速增加至最大值而仍無法降低如光源背板溫 度Ts等LED光源之溫度時，改以降低LED光源亮度的輸出 值來減少熱量產生，並可在仍無法改善光源背板溫度Ts 的情況下進一步關閉LED燈具之電源，以達到安全與保護 之目的。 [0016] 綜上所述，本發明確可達到預期之使用目的，而解決習 知之缺失，又因極具新穎性及進步性，完全符合發明專 利申請要件，爰依專利法提出申請，敬請詳查並賜准本 案專利，以保障發明人之權利。 [0017] 惟以上所述僅為本發明之較佳可行實施例，非因此即拘 100100053 表單編號A0101 第6頁/共10頁 1002000099-0 201229428 限本發明之專利範圍，故舉凡運用本發明說明書及圖式 内容所為之等效技術、手段等變化，均同理皆包含於本 發明之範圍内，合予陳明。 【圖式簡單說明】 [0018] 第一圖係本發明之邏輯控制圖。 【主要元件符號說明】 [0019] <本發明> [0020] 步驟S10 〜S21 Ο201229428 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to an LED lighting device, and more particularly to a method for achieving heat dissipation management by using the temperature and brightness of an LED lighting device. [Previous Technology F] [0002] Press, LED (L i ght-Emi tl: i ng D i ode) is a kind of semiconductor component, which was used as an indicator light, display panel, etc. in the early days; The appearance of white light-emitting diodes is also used as illumination. It has become a common light source today, and has the advantages of high efficiency, long life, and not easy to break, which traditional light bulbs cannot match. [0003] However, when the LED is emitting light, it will increase its own temperature due to high heat generation, so that it is in a high temperature environment. At the same time, the energy conversion efficiency of the LED at a high temperature will rapidly drop, and the power will be wasted and Produces more heat, causing the temperature to rise again and again, becoming a vicious circle and shortening its life. Therefore, the conventional LED lighting device will provide a heat dissipating component for the LED light source backplane, for example, a plurality of fins are arranged on the lamp cup, a fan is installed, and the like, and even the monitoring and the like, the light source backplane of the LED continues to rise. At the time of temperature, the heat dissipation effect is enhanced by increasing the fan speed to meet the heat dissipation requirement. [0004] However, although the traditional method helps to slow down the heat dissipation problem, if the heat continues to rise, or the fan speed has reached the maximum performance and cannot help the temperature drop, it is easy to cause damage to the lamp, or even an accident due to high temperature. Wait, so it is still not ideal. In view of this, the present inventors have improved and solved the above-mentioned shortcomings, and the special research and coordination with the application of the theory, finally proposed a reasonable design and form number A0101 page 3 / 10 pages 1 [0005] 201229428 effective improvement The invention described above is missing. SUMMARY OF THE INVENTION [0006] The main purpose of the present invention is to provide a heat management method for an LED lighting device, which can detect the temperature of the LED lighting device, and reduce the output brightness of the LED lighting device after reaching the set temperature, Reduce heat generation; if it still can't be improved, you can further turn off the LED lighting device to further achieve safety and protection. [0007] In order to achieve the above object, the present invention provides a heat management method for an LED lighting device, including an LED light source, and a fan for helping the LED light source to cool down; the method includes: in an open state, Measuring the temperature of the LED light source; increasing the speed of the fan when the measured temperature reaches the preset value of the first temperature; and the speed of the fan has increased to a maximum value, and the measured temperature still reaches the first temperature preset When the value is used, the brightness value of the output LED light source is lowered. [Embodiment] [0008] For a better understanding of the features and technical contents of the present invention, the following detailed description of the present invention and the accompanying drawings are provided. It is intended to limit the invention. Please refer to the first figure, which is a logic control diagram of the present invention. The invention provides a heat dissipation management method for an LED illumination device, the LED illumination device comprising an LED light source and a fan for helping the LED light source to cool down; the steps of the heat dissipation method are as follows: [0010] First, the method is turned on The LED lighting device can turn on the above LED light source 100100053 Form No. A0101 Page 4 / 10 pages 1002000099-0 201229428 and the fan, as in step S1 0. After the LED lighting device is used for a period of time, or continuously in an open state, as in step SU, measuring the temperature of the LED light source, such as the light source backplane temperature TS, etc.; the measured light source backplane temperature Ts is set with a preset The first temperature preset value is judged to determine whether the light source backplane temperature Ts reaches the first temperature preset value? That is, in the embodiment of the present invention, the first temperature preset value can be set to 70 degrees. If the value is still not reached, the light source backplane temperature Ts is continuously measured until The light source backing plate temperature Ts reaches the first temperature preset value, that is, proceeds to step S13: increasing the rotational speed of the fan. ❹_ Ο As described above, when the fan speed increases and runs for a period of time, the process proceeds to step S14: measuring again and determining whether the light source backplane temperature TS still reaches the first temperature preset value (the aforementioned example is 70 degrees) )? If not, step S15 may be performed to reduce the fan speed, and returning to step sii to continue measuring whether the light source backplane temperature Ts reaches the first temperature preset value to continue steps S11 to S14; If the temperature TS still reaches the preset value of the first temperature, proceed directly to step S16 to confirm whether the fan speed has reached the maximum value. At this time, if the fan speed has not reached the maximum value, return to step S13 to continue increasing the fan speed; but if the maximum value of the fan speed has been reached, then proceed to step S17 to reduce the LED light source by reducing the brightness value of the LED light source. The heat generated. [0012] After the brightness value of the LED light source is lowered, step S18 is further performed to determine whether the light source backplane temperature Ts reaches a preset second temperature preset value. In the embodiment of the present invention, the second temperature preset value may be set to 90 degrees. If it is still not reached, the process proceeds to step S19 to reduce the fan speed; otherwise, the process proceeds to step S20: the LED light source is turned off. Avoid its temperature 100100053 Form number A0101 Page 5 / Total 10 pages 1002000099-0 201229428 Continue to rise. After a period of time, the process proceeds to step S21 to determine whether the temperature of the light source backplane Ts is lowered to a preset third temperature preset value. In the embodiment of the present invention, the third temperature preset value may be set to 40 degrees. If the light source backplane temperature Ts is lower than the third temperature preset value, it represents the light source backplane temperature Ts. Has been reduced to a safe or tolerable range, and can return to step 10 to re-open the LED lamp and fan; but if still can not be reduced to the third temperature preset value, continue to maintain the state of step S20, turn off the LED lamp to The light source backing plate temperature Ts drops. [0013] In addition, regarding the setting of the first, second or third temperature preset values, the first temperature preset value may be less than or equal to the second temperature preset value, and the third temperature preset value is less than the first temperature preset The value is also less than the second temperature preset value. [0014] Therefore, the heat dissipation management method of the LED lighting device of the present invention can be obtained by the above-described step flow. [0015] Therefore, the heat management method of the LED lighting device of the present invention mainly reduces the brightness of the LED light source when the temperature of the LED light source such as the light source backplane temperature Ts cannot be lowered by increasing the fan speed to the maximum value. The value is used to reduce heat generation and further turn off the power of the LED luminaire for safety and protection purposes even if the temperature of the light source backplane Ts is still not improved. [0016] In summary, the present invention can achieve the intended use purpose, and solve the lack of the conventional, and because of the novelty and progress, fully meet the requirements of the invention patent application, and apply according to the patent law, please Detailed investigation and grant of the patent in this case to protect the rights of the inventor. [0017] However, the above description is only a preferred embodiment of the present invention, and is not limited to 100100053. Form No. A0101, page 6 / 10 pages, 1002000099-0 201229428, which is limited to the patent scope of the present invention. Changes in equivalent techniques and means, such as those in the drawings, are included in the scope of the present invention and are combined with Chen Ming. BRIEF DESCRIPTION OF THE DRAWINGS [0018] The first figure is a logic control diagram of the present invention. [Description of Main Element Symbols] [0019] <The Present Invention> [0020] Steps S10 to S21
100100053 表單編號A0101 第7頁/共10頁 1002000099-0100100053 Form No. A0101 Page 7 of 10 1002000099-0