201211673 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種用於一顯示裝置之過熱防止裝置，特別是關 於一種用於一顯示裝置中，因應不同環境而自動調整之過熱防止 裝置。 【先前技術】 隨著科技發展所帶來的便利性，顯示裝置已成為生活當中不可 或缺之電子產品。其中，又以用於大型螢幕之投影裝置更為廣泛 使用，例如：會議室、家庭劇院、教室等。而也因為其使用之情 況相當普遍，因此，常會使用於各種不同之環境狀況。也因為投 影裝置於使用時，其發光元件會產生大量之熱能，為了確保投影 裝置不會因過熱而導致當機之情況，大部份之投影裝置皆會搭配 散熱裝置使用，例如風扇。 然而，風扇於運轉時，經常會產生無可避免之雜音，進而影響 使用之品質，尤其又以當風扇轉速設定偏高時。因此，有許多控 制風扇的方式隨之發展，以因應調整風扇之轉速。其中，一種常 見之方式便是以手動之方式調整，此種方式雖然價格便宜且設計 簡單，僅需藉由使用者之觀感判定投影裝置之溫度，而手動設定 風扇之轉速即可，然，若發生錯誤之判定，也將容易導致投影裝 置之元件耗損。 另，也有利用溫度感測器自動設定風扇轉速之做法，其主要係 利用投影裝置中之溫度感測器判斷使用之溫度高低，並據此自動 地調整風扇之轉速。雖此種方式比起手動調整具有較佳之判斷能 201211673 …穴= 通常係設定溫度臨界點，若投影 μ nr;界點’則加快風扇之轉速；若低於溫度臨 龜風扇之轉速。如此-來，若投影裝置之使用溫产近 ㈣界點時’風扇將會因溫度之瞬間提升以及降低 = =:::風扇之轉速、風扇之雜一溫度間= g之平衡外’更可能因此造成風扇之使料命降低。 更者田技衫衣置使用於不同之海拔高度時，尚有利201211673 VI. Description of the Invention: TECHNICAL FIELD The present invention relates to an overheat preventing device for a display device, and more particularly to an overheat preventing device for automatically adjusting a display device in response to different environments. [Prior Art] With the convenience brought about by the development of technology, display devices have become an indispensable electronic product in life. Among them, projection devices for large screens are more widely used, such as conference rooms, home theaters, classrooms, and the like. And because its use is quite common, it often results in a variety of different environmental conditions. Also, because the projection device generates a large amount of thermal energy when it is used, most of the projection devices are used with a heat sink, such as a fan, in order to ensure that the projection device does not cause a crash due to overheating. However, when the fan is running, it often produces unavoidable noise, which in turn affects the quality of use, especially when the fan speed is set too high. Therefore, there are many ways to control the fan to adjust the speed of the fan. Among them, a common way is to adjust manually. Although this method is cheap and simple in design, it is only necessary to determine the temperature of the projection device by the user's perception, and manually set the rotation speed of the fan. The determination of the occurrence of an error will also easily cause component wear of the projection device. In addition, there is also a method of automatically setting the fan speed by using a temperature sensor, which mainly uses the temperature sensor in the projection device to judge the temperature of the use, and automatically adjusts the speed of the fan accordingly. Although this method has better judgment than manual adjustment, 201211673 ... hole = usually set the temperature critical point, if the projection μ nr; boundary point 'is speed up the fan; if it is lower than the speed of the turtle fan. So - if the projection device uses the temperature near the (four) boundary point, the fan will rise and decrease due to the temperature of the fan = =::: the speed of the fan, the balance between the fan and the temperature = g is more likely As a result, the life of the fan is lowered. Even when the field shirts are used at different altitudes, it is still beneficial.
^之方式來判斷使用環境，並藉此依海拔之高度調整風扇之= :大:所::壓力感測器判斷高度之方式價格太過昂貴，無法廣 因此，如何解決上述之問題，使得投影裝置能夠因應不同環境 調整散熱裝置，並且同時於散熱、雜音以及價格間取得最佳之平 衡點’係屬業界仍須努力之目標。 【發明内容】 • 祕決前述之問題’本發明之目的在於提供-種用於-顯示裝 置之過熱防止裝置，其可使顯示裝置因應不同之使㈣境，自動 且平衡地調整過熱防止裝置之風扇之轉速，以確保過熱防止裝置 及顯示裝置兩者於使用時之正確性。 為完成前述目的，本發明係提供一種過熱防止裝置，用於—顯 示裝置’該顯示裝置包含至少一風扇’該至少_風扇以至少—初 始轉速運行，該過熱防止裝置包含一第一溫度感測器、一第二溫 度感測器以及一處理模組。該第一溫度感測器係用以感測一環境 溫度，並根據該環境溫度產生—第—訊號。該第二溫度感測器偉 5 201211673 用以感測該顯示裝置之—内部溫度，並根據該内部溫度產生一第 一fl#…玄處理摘組係因應該第一訊號以及該第二訊號，將該至 少-風扇由該至少—初始轉速調整至至少—第—運作轉速運行。 a本毛月之另目的係提供-種投影裝置，包含至少一風扇、— 第-溫度感測器、—第二溫度感測器以及一處理模組。該至少— 風扇以至少—初始轉速運行。該第-溫度感測器係用以感測一環 境溫度，並根據該環境溫度產生—第—訊號。該第二溫度感測器 係用以感測該投影裝置之一内部溫度，並根據該内部溫度產生— 第二訊號。該處理模應該第―訊號以及該第二訊號，將該 至乂風扇由该至少—初始轉速調整至至少—第—運作轉速運 行0 ^之内a本發明可利用顯示裝置之二感測器，對環境 進行伯測’以產生於各種列環境下之參數，並透過此些參數進 -步地對顯示裝置之風扇做自動且平衡之調節，使得顯示裝置能 夠於各種不同環境下正常的運作。 在參閱圖式及隨後描述之實施方式後，此技術領域具有通常知 識者便可瞭解本發明之其他目的、優點以及本發明之技術手段及 實施態樣。 【實施方式】 以下將透過實施例來解釋本發明 +知β之種過熱防止裝置。需說明 者，本發明之實施例並非用以限制太 丨艮刺本發明需在如實施例所述之任^ Way to judge the use of the environment, and adjust the fan according to the height of the altitude =: large: the:: pressure sensor to determine the height of the way the price is too expensive, can not be wide, therefore, how to solve the above problems, so that the projection The device is able to adjust the heat sink according to different environments, and at the same time achieve the best balance between heat dissipation, noise and price. SUMMARY OF THE INVENTION The present invention aims to provide an overheat preventing device for a display device that can automatically and balancedly adjust the overheat preventing device in response to a different display environment. The speed of the fan to ensure the correctness of both the overheat prevention device and the display device during use. In order to accomplish the above object, the present invention provides an overheat preventing device for a display device that includes at least one fan 'at least a fan operating at least at an initial rotational speed, the overheat preventing device including a first temperature sensing a second temperature sensor and a processing module. The first temperature sensor is configured to sense an ambient temperature and generate a - signal according to the ambient temperature. The second temperature sensor Wei 5 201211673 is configured to sense an internal temperature of the display device, and generate a first fl#... according to the internal temperature, the first signal and the second signal are generated. The at least-fan is operated from the at least initial rotational speed to at least the first operational rotational speed. A further objective of the present invention is to provide a projection device comprising at least one fan, a first temperature sensor, a second temperature sensor and a processing module. At least - the fan operates at at least - initial speed. The first temperature sensor is configured to sense an ambient temperature and generate a - signal according to the ambient temperature. The second temperature sensor is configured to sense an internal temperature of the projection device and generate a second signal according to the internal temperature. The processing module should use the first signal and the second signal to adjust the at least the initial speed to at least the first operating speed of 0 ^. The invention can utilize the second sensor of the display device. The environment is tested to generate parameters in various column environments, and the fans of the display device are automatically and balancedly adjusted through these parameters, so that the display device can operate normally in various environments. Other objects, advantages, and technical means and embodiments of the present invention will become apparent to those skilled in the <RTIgt; [Embodiment] Hereinafter, the present invention will be explained by way of an embodiment. It should be noted that the embodiments of the present invention are not intended to limit the spur of the present invention.
何特定之環境、應用或特殊方式方能总A 、万月匕貝％。因此，關於實施例之 說明僅為闡釋本發明之目的，而非心限制本發明。 201211673 參考第1圖係本發明之一顯示裝置1之示意圖，需特別 、 於本實〜例中，顯示裝置i係為—投影裝置，然，並不 以此為限，顯干壯罢 一 衣置1可以為任何需要防止過熱之顯示設備。顯 ；^置1包含—風屬11以及—過熱防止裝置⑴其中，過熱防止 :一 13更包含—第-溫度感測器131、-第二溫度感測器133以 包3 — §己憶體137之處理模組135。 首，’顯示裳置！於開啟之後，風扇^以—初始轉速運行，What is the specific environment, application or special way to total A, million months of mussels. Therefore, the description of the embodiments is merely illustrative of the invention and is not intended to limit the invention. 201211673 Referring to FIG. 1 is a schematic view of a display device 1 of the present invention. In particular, in the present embodiment, the display device i is a projection device. However, it is not limited thereto. Setting 1 can be any display device that needs to prevent overheating. 1. Set 1 includes - wind genus 11 and - overheat prevention device (1), wherein overheat prevention: a 13 further includes - first temperature sensor 131, - second temperature sensor 133 to package 3 - § memory Processing module 135 of 137. First, 'shows the skirt! After turning on, the fan ^ runs at the initial speed.
通即弟I度感測器131便開始偵測顯示裝置^所 境溫度L並根據環境溫^產生 :春 座玍罘汛唬丨32,且將第—訊 二^至處理模組135;而第二溫度感測器133則偵測顯示裝 且將t内部溫度I，並根據内部溫度[產生—第二訊號134， 號134傳送至處理模組135。此時，處理模組⑴便因 汛7虎132以及第二訊號134 ’將風扇11由該初始轉速調整 至一弟一運作轉速運行。 坪細來說，處理模組135於開機之後，先決定風扇u之該初々 轉速，以利於_時之散熱，而於顯示裝S 1運作了—預設時fe /月後處理輪、組！35便根據第一溫度感測器】3!所傳送之第一 訊號心判斷環境溫度Τι，並且根據第二溫度感測器⑴所料 之弟二訊號m ’判斷顯示裝置，之内部溫度P隨後，處理模 =5即根據環境溫度、内部溫度i以及儲存於記憶體⑺之 弟—對應闕係表m判斷顯示裝置^目前之一環境高度。 請先參考第Μ㈣-對應關係表i36包含頂於環境溫度 201211673 乃以及内部溫度几之一第一溫度對應關係1361、一第二溫度對應 關係1362以及一第三溫度對應關係1363。其中，如何依據c、 Iij判斷該環境高度’將於後續之内容中解說。需先特別說明者， 由於第一溫度對應關係1361中之（C丨丨，I丨丨）、（C|2，Ii2)、（C|3The pass-through I degree sensor 131 starts to detect the temperature L of the display device and generates according to the ambient temperature: the spring seat 32, and the first message to the processing module 135; The second temperature sensor 133 detects the display device and transmits the internal temperature I of t, and transmits it to the processing module 135 according to the internal temperature [generating-second signal 134, number 134). At this time, the processing module (1) adjusts the fan 11 from the initial rotational speed to the first-one operating speed by the 虎7 tiger 132 and the second signal 134'. In the case of the ping, the processing module 135 determines the initial rotation speed of the fan u after the power is turned on, so as to facilitate the heat dissipation of the _, and the display device S 1 is operated - the preset time / month after the processing wheel, group ! 35 judges the ambient temperature Τι according to the first signal heart transmitted by the first temperature sensor 】3!, and judges the display device according to the second signal m′ of the second temperature sensor (1), and the internal temperature P is subsequently The processing mode=5 means that the ambient temperature of the display device is determined according to the ambient temperature, the internal temperature i, and the corresponding data stored in the memory (7). Please refer to the fourth (four)-correspondence table i36 first, including the ambient temperature 201211673 and one of the internal temperature first correspondence 1361, a second temperature correspondence 1362, and a third temperature correspondence 1363. Among them, how to judge the environmental height according to c, Iij will be explained in the following content. Special explanations are required, because (C丨丨, I丨丨), (C|2, Ii2), (C|3) in the first temperature correspondence 1361
In) 、（CI4，II4) (C15, 115)係大致上呈現線性關係，因此，為 便於理解，特將第一溫度對應關係1361繪成第2B圖之座標圖中 之線段21。同理，第二溫度對應關係、1362、第三溫度對應關係咖 亦分別繪成線段22、23，俾後續之說明。 首先，處理模組135會先^環境溫度Τ|·之值為基準點，並以内 «度tc之值判斷該環境高度。舉例來說，當處理模组135判斷 環境溫度1之值為^時’處理模組135便根據第—溫度對應關係 ⑽（線段2i)所表示之關係，決定内部溫度[是否有超過第一 溫度對應關係1361中…所對應之值Cn，藉以判斷該環境高产。 更詳細而言，若是處理模組135於環境溫度Ti之值為^之當^ 判斷内部溫度凡之值係小於或等 ，目，丨处主—„ 、4寻於Cn，則代表該環境高度係介 於第一溫度對應關係1361所界定之一第一環境高度範圍R|。 反之，若是處理模組135於環境溫度丁乂值為^之當下’判斷. ^心皿度Te之值係大於，則代表該環境高度已超過第一環境 尚度範圍R,，此時，處理模組 便根據弟二溫度對應關係1362， 進一步判斷該環境高度是否界 疋否界於第二溫度對應關係1362所界定之 一苐一環境兩度範圍R2。 更詳細來說，處理模組135 、畊4 %境咼度已超過第一環境 201211673 高度範圍R,後，便同樣地再以環境溫度τ之值為基準點，並㈣ 部溫度TC之值判斷該環境高度。舉例而言，當處理模組出判斷 環境溫度T,之值為^且内部溫度[之值係大於L後，處理模組 135便根據第二溫度對應關係1362 (線段22)所表示之關係，決 定内部溫度tc之值是否小於或等於C2|。若是則代表該環境高 度介於第二環境高度範圍R2 ;若否，則處理模組US便根據第三In), (CI4, II4) (C15, 115) are substantially linear, and therefore, for ease of understanding, the first temperature correspondence 1361 is drawn as the line segment 21 in the coordinate map of Fig. 2B. Similarly, the second temperature correspondence, 1362, and the third temperature correspondence are also drawn as line segments 22 and 23, respectively. First, the processing module 135 first determines the ambient temperature by the value of the ambient temperature Τ|·, and the value of the internal degree «tc. For example, when the processing module 135 determines that the value of the ambient temperature 1 is ^, the processing module 135 determines the internal temperature according to the relationship represented by the first temperature correspondence (10) (line segment 2i) [whether or not the first temperature is exceeded. Corresponding to the value Cn corresponding to the relationship 1361, it is judged that the environment is high-yield. In more detail, if the value of the processing module 135 at the ambient temperature Ti is ^, the internal temperature is judged to be less than or equal to the value, and the target is -, and 4 is found in Cn, which represents the ambient height. The first environmental height range R| is defined by the first temperature correspondence 1361. Conversely, if the processing module 135 is at the ambient temperature, the value is greater than the value of the ^. , it means that the height of the environment has exceeded the first environment range R, and at this time, the processing module further determines whether the environment height is bounded by the second temperature correspondence 1362 according to the second temperature correspondence 1362. One of the two environments is defined as a range of two degrees R2. In more detail, the processing module 135 and the tilling degree have exceeded the height of the first environment 201211673, and then the value of the ambient temperature τ is similarly The reference point, and (4) the value of the temperature TC determines the height of the environment. For example, when the processing module determines the ambient temperature T, the value is ^ and the internal temperature [the value is greater than L, the processing module 135 is based on The second temperature correspondence relationship 1362 (line 22) The relationship is shown, determines the value of the internal temperature is less than or equal tc C2 | If represents the second ambient environment height between a height range R2;. If not, then processing module according to a third US
溫度對應關係13 63，進一步j丨丨齡兮B / W斷5亥裱纟兄尚度疋否界於第三溫度對 應關係U63所界定之—第三環境高度範圍化。相同地，後續之判 斷動作則與上述之流程相同，於此不再費述。 而田處理核組135決定該環境高度後，便先依據該環境高度， 將風扇U由該初始速度調整至該第一運作轉速，藉以因應顯:裝 置1所處之該環境高度需使用之散熱模式。接著，處理模电⑶ 於確認顯示裝置i所處之該環境高度以及該第—運作轉速後，再 根據。己憶體137内儲存之—第二對應關係表138來決定風扇η需 要變更之轉速。 、而特W犮明者’第二對應關係表138中記錄了若當顯示裝置1 :顺於第—環境高度範圍第二環境高度範圍r2或第三環境 门度乾圍r3時’環境溫度Te以及該第—運作轉速之關係、，並據此 =扇11之轉速由該第—運作轉速調整至—第：運作轉速運行。 价 處理杈組135係根據第一訊號132所代表之環境严产τThe temperature correspondence 13 63, further j 丨丨 兮 B / W 断 5 裱纟 裱纟 尚 于 界 界 界 界 界 界 界 界 界 界 界 界 界 界 界 第三 第三 第三 第三 第三 第三 第三 第三 第三 第三 第三 第三 第三 第三Similarly, the subsequent judgment action is the same as the above-described process, and will not be described here. After the field processing core group 135 determines the height of the environment, the fan U is first adjusted to the first operating speed according to the height of the environment, so as to reflect the heat required to be used in the environment where the device 1 is located. mode. Next, the processing mode (3) is performed after confirming the environmental height at which the display device i is located and the first operating speed. The second correspondence table 138 stored in the memory 137 determines the rotational speed at which the fan η needs to be changed. The second correspondence table 138 records the environment temperature Te when the display device 1 is in the second environmental height range r2 or the third environmental door width r3. And the relationship between the first operating speed and the speed of the fan 11 is adjusted from the first operating speed to the first: operating speed. The price processing group 135 is based on the environment represented by the first signal 132.
以及篦_ /皿又C —、…關係表138，再次調整風扇11之轉速。 201211673 、，考第3A圖。第二對應關係表138包含其了當顯示裝置1 =處=第—環境高度範圍1第二環境高度範圍〜以及第三環 二度Iliil r3時’環境溫度Ti以及該第—運作轉速之—第一轉速 關係1加、-第二轉速關係1382以及一第三轉速關係⑽。同 樣地’為便於理解，特將第—轉速關係1381繪成第3B圖之座標 圖中之線段3卜同理，第二轉速關係⑽、第三轉速關係1383 亦分別緣成線段32、33,俾後續之說明。 詳言之，當顯示裝置！處於第一環境高度範圍^時，風扇u 之轉逮以及環境溫度Ti之對應關係則如第—轉速關係i38i(線段 合^ : 丁舉例而S，若顯示農置1處於第-環境高度範圍R,， 作。度丁1之值等於16時’則風扇11便調整至W12之轉速運 同樣地，當顯示裝置！處於第二環境高度範圍&時，風扇^ 之轉速以及環境溫度Ti之對應_則如第：轉速關係⑽（線段 32 )所示。舉例而言，若 m處於第二環境高度範圍r2， 兄：又T|之值等於17時’則風扇11便調整至w23之轉速運 =:而其他狀況亦以同樣之方法調整風扇11之轉速，於此不再費 需特別強調，為了更完整祕έ彳 …更W地確保顯示裝置i之操作正常 體137更儲存了 一第一上限值 ^ llmit ，备裱境溫度Ti超過第— 限值處理模組135便因應第_訊號132使顯 f轉；記憶體1352更儲存—第二上限值W，當内部溫产t 超過第二上限值時，處理模組135便因應第二訊號134^ c 201211673 將得以利用第一上限 示裝置1得到更完整 示裝置1停止運轉。如此一來，顯示裝置^ 值c丨imit以及第二上限值之限定，使得顯 之過熱保護。 綜上所述，顯示裝置1先利用環境严许 衣兄，皿度Tc、内部溫度乃以及第 —對應關係表136記錄之内容，判斷顯千雄 辦叇不裝置1所處之高度位置， 隨後再基於顯示裝置1所處之高度，栌媸 役根據壞境溫度Tc以及第二對 應關係表i38記錄之内容，決定風扇u之轉逮。如此—來，即可 在較低成本以及較高㈣準確性之條件下，於溫度與噪音間取得 最佳之平衡點，以完成先前技術中所無法達到之功效。 卞 【圖式簡單說明】 弟1圖係本發明一顯示裝置之示意圖； 第2A圖係本發明一第一對應關係表； 第圖係本發明一第一對應關係表之座標圖； 第3A圖係本發明一第二對應關係表；以及And the 篦_ / dish and C -, ... relationship table 138, adjust the speed of the fan 11 again. 201211673,, test 3A. The second correspondence table 138 includes the 'ambient temperature Ti and the first operating speed' when the display device 1 =where = the first - the ambient height range 1 the second ambient height range ~ and the third ring second degree Iliil r3 A speed relationship 1 plus, a second speed relationship 1382, and a third speed relationship (10). Similarly, for ease of understanding, the first-rotational speed relationship 1381 is plotted as the line segment 3 in the coordinate diagram of Figure 3B. Similarly, the second rotational speed relationship (10) and the third rotational speed relationship 1383 are also formed into line segments 32, 33, respectively. Description. In detail, when the display device! When in the first environmental height range ^, the correspondence between the fan u and the ambient temperature Ti is as the first-speed relationship i38i (the line segment is ^: for example and S, if the farmer 1 is in the first-environmental height range R) , when the value of D1 is equal to 16' then the fan 11 is adjusted to the speed of W12. Similarly, when the display device! is in the second ambient height range &, the corresponding speed of the fan ^ and the ambient temperature Ti _ then as shown in the following: speed relationship (10) (line 32). For example, if m is in the second ambient height range r2, brother: and the value of T| is equal to 17 'the fan 11 is adjusted to the speed of w23 =: In other cases, the speed of the fan 11 is adjusted in the same way, and no special emphasis is required here, in order to be more complete and secret... more secure operation of the display device i is stored in the first body 137. The upper limit ^ llmit , the standby temperature Ti exceeds the first limit processing module 135 to respond to the first signal 132; the memory 1352 is further stored - the second upper limit W, when the internal temperature output t exceeds The second upper limit value, the processing module 135 responds to the second signal 134^ c 20 1211673 will be able to use the first upper limit display device 1 to obtain a more complete display device 1 to stop operation. As a result, the display device value c丨imit and the second upper limit value are limited, so that the overheat protection is apparent. The display device 1 first determines the height position of the device 1 by using the environmentally strict clothing brother, the degree Tc, the internal temperature, and the content recorded in the first correspondence table 136, and then based on the display device 1 At the height of the situation, the servant determines the transfer of the fan u according to the ambient temperature Tc and the content recorded in the second correspondence table i38. Thus, at a lower cost and higher (four) accuracy conditions The best balance between temperature and noise is achieved to achieve the functions that could not be achieved in the prior art. 卞 [Simplified description of the drawings] Figure 1 is a schematic view of a display device of the present invention; a first correspondence table; a figure is a coordinate map of a first correspondence table of the present invention; and FIG. 3A is a second correspondence table of the present invention;
第3β圖係本發明一第二對應關係表之座標圖。 【主要元件符號說明】 1 :顯示裝置 13 :過熱防止裝置 13 2 ‘第—訊號 134 :第二訊號 136 :第—對應關係表 11 .風扇 131 :第一溫度感測器 133 :第二溫度感測器 135 :處理模組 1361 :第一溫度對應關係 201211673 1362 137 ： 1381 1383 :第二溫度對應關係 1363 :第三溫度對應關係 記憶體 138:第二對應關係表 :第一轉速關係 1382:第二轉速關係 :第三轉速關係The 3rd figure is a coordinate map of a second correspondence table of the present invention. [Main component symbol description] 1 : Display device 13 : Overheat prevention device 13 2 'First signal 134 : Second signal 136 : First correspondence table 11 . Fan 131 : First temperature sensor 133 : Second temperature sense 135: processing module 1361: first temperature correspondence 201211673 1362 137: 1381 1383: second temperature correspondence 1363: third temperature correspondence memory 138: second correspondence table: first speed relationship 1382: Two speed relationship: the third speed relationship
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