1269514 ⑴ 沴年/ 月Θ曰修正止/補充 玖、秦0月說明 (發明說明成敘明：發明所屬之技術領域、先前技術、内容、實施方式及圖式簡單臺明) 本發明係關於一 led發光模組之電源組件，包括一可連 接led發光模組至其上之電源器與係有能力用一脈衝頻 率切換電源器（電壓或電流）至LED發光模組接通及關斷 之一脈衝控制器以便控制LED發光模組之平均光源輸出。1269514 (1) Leap year/month Θ曰 revision/replenishment 玖, 秦月月月月月月 description (invention description: the technical field, prior art, content, implementation mode and drawing simple invention of the invention) The power component of the LED light-emitting module comprises a power supply device capable of connecting the LED light-emitting module to the power supply device and capable of switching the power supply (voltage or current) to one of the LED light-emitting modules to be turned on and off. The pulse controller controls the average light source output of the LED lighting module.
·· L E D發光模組係越來越多使用以照明目的物。亦可使用 其為信號發光，例如用在交通燈光。可按不同熟知之方式 控制一 LED發光模組之光源輸出。該方式之一包括經由模 組控制（變暗）電流強度。此方式有其缺點：在一電流強度 約在額定電流強度20%以下時，電流強度與光輸出間之關 係主要變成非直線性，且模組之效用即決非理想。因此， 已尋求解決辦法使光源強度能夠受控制同時可維持經模 組之額定電流強度。U.S 5,661，645專利可說明如首段所述 L E D發光模組之電源器。按該文件，配置酿衝控制器在電 壓源之輸出與L E D發光模組之間，以某種脈衝頻率致使至 模組之電源。被切換成接通及關斷。電壓源係持續在接通 狀態，當至LED發光模組之電源亦被切斷時，會造成不必 要之能量損失。 本發明之一目的係在提供LED發光模組之一有效，玎 靠，廉價而簡單電源組件同改良功效。 依據本發明即可達成此目的因為脈衝控制器有能力以 脈衝頻率切換電源器接通和關斷。按此情況，電源器僅當 電流係實際被供給時係在接通狀態中，致使熱量產生和能 源損失減至最低，因而造成此系統之改良功效。 -6- 1269514 泠手β月β日修正 mmmi ......... (2) 第〇9〇1〇5228號專利申請案 中文說明書替換頁(93年1〇月） 車乂佳地’脈衝技制器包括一脈波波期調變器能夠在電源 器係在接通狀態期間可控制脈波之長度。此可使平均光源 輸出能夠受控制。 較佳地’電源器係一受控制之恒定電流源。此點有其優 點在LED模組内進一步測量，諸如提供額外電阻器，係不 必要來控制經LED之電流。· · L E D lighting modules are increasingly used to illuminate objects. It can also be used as a signal to illuminate, for example in traffic lights. The light source output of an LED lighting module can be controlled in a different manner. One of the ways includes controlling (darkening) the current intensity via the module. This method has its disadvantages: when the current intensity is less than 20% of the rated current intensity, the relationship between the current intensity and the light output mainly becomes non-linear, and the utility of the module is never ideal. Therefore, a solution has been sought to enable the intensity of the light source to be controlled while maintaining the rated current strength of the mold set. The U.S. Patent No. 5,661,645 describes the power supply of the L E D lighting module as described in the first paragraph. According to this document, the brewing controller is configured to generate a power supply to the module at a certain pulse frequency between the output of the voltage source and the L E D lighting module. Switched to on and off. The voltage source is continuously on, and when the power to the LED lighting module is also turned off, unnecessary energy loss is caused. One of the objects of the present invention is to provide an effective, reliable, inexpensive and simple power supply assembly for an LED lighting module. This can be achieved in accordance with the present invention because the pulse controller has the ability to switch the power supply on and off at a pulse frequency. In this case, the power supply is only in the on state when the current is actually supplied, minimizing heat generation and energy loss, thereby improving the system. -6- 1269514 泠手β月β日修正mmmi ......... (2) 〇9〇1〇5228 Patent Application Chinese Manual Replacement Page (93 years 1 month) The pulse technician includes a pulse wave period modulator that controls the length of the pulse wave during the power-on state. This allows the average source output to be controlled. Preferably, the power supply is a controlled constant current source. This has its advantages in further measurement within the LED module, such as providing additional resistors, which does not necessarily control the current through the LED.
較佳地’電源器係一高頻開關模式電源器（smps)它可供 給一紋波D C電流或一紋波〇 C電壓，該電源器較佳包括一 半電橋式變流器，一模型變流器或掠返變流器。脈波週期 调變器較佳以脈衝頻可切換變流器接通和關斷。按此方 式’可很有效地達成所望之效應。此外，較佳地變流器之 纹波頻率係脈衝頻之一整倍數，且紋波D c電壓或紋波d C 私壓係與脈衝控制信號同步化，因而減少任何穩定性問題 和系統内之能量損失。 因相同理由’脈衝頻較佳地係電壓源之頻率（慣常為 5 0 Hz或60 Hz)之整倍數，例如連接至電源組件上之主 要電壓’且脈衝控制信號係與主幹電壓信號同步化。 較佳地’脈衝頻係在5 0 Η Z與2 0 ο Η z或2 0 kH z以上間之 範圍内。更較佳地脈衝頻係1〇〇 HZ(若主頻係50 Hz)或120 Hz(若主頻是60 Hz)。當效用係由一半電橋式變流器所完 成時’若有關切換損失選擇脈衝頻儘可能低是為最佳方 式。然而’頻率較佳地應超過由人眼可觀察之頻率（約 7 0 Hz)因為在較低頻處由LED所產生閃爍係顯而易見。此 外’頻率較佳應在2 0 0 Η z至2 0 k Η z人類之聽覺範圍 1269514 (3)Preferably, the power supply is a high frequency switch mode power supply (smps) which can supply a ripple DC current or a ripple 〇C voltage. The power supply preferably includes a half bridge type converter, a model change Current or gliding converter. The pulse period modulator is preferably switched on and off with a pulse frequency switchable converter. In this way, the desired effect can be achieved very effectively. In addition, it is preferred that the ripple frequency of the converter is an integral multiple of the pulse frequency, and the ripple D c voltage or the ripple d C private voltage is synchronized with the pulse control signal, thereby reducing any stability problems and within the system. Energy loss. For the same reason, the pulse frequency is preferably an integral multiple of the frequency of the voltage source (usually 50 Hz or 60 Hz), such as the main voltage connected to the power supply component and the pulse control signal is synchronized with the backbone voltage signal. Preferably, the pulse frequency is in the range between 50 Η Z and 2 0 ο Η z or 20 k Hz or more. More preferably, the pulse frequency is 1 〇〇 HZ (if the main frequency is 50 Hz) or 120 Hz (if the primary frequency is 60 Hz). When the utility is completed by half of the bridge type converter, it is the best mode if the switching frequency is selected as low as possible. However, the frequency should preferably exceed the frequency observable by the human eye (about 70 Hz) because the scintillation system produced by the LED at lower frequencies is obvious. The external frequency should preferably be between 2 0 0 Η z and 2 0 k Η z human hearing range 1269514 (3)
以外以消除擾亂之聲音效果。 較佳地，由在接通狀態之電源器所供給至LED發光模組 之電流係已選擇為額定電流之一恒定電流，且因而產生 LED發光模組之最佳光源輸出，致使電源器之額定電流強 度理想化，此對功效有一有利效果。 按較佳實例，脈衝控制器係被耦合至能夠測量LED發光 模組之溫度及/或光源輸出的一感測器，該脈衝控制器係 在電源器在接通狀態中能夠憑由感測器所測量值控制脈 波之長度。藉此控制，在變化情況下可穩定模組之光源輸 出。按更較佳實例，可由用戶調整脈波之波期。藉此調整， 可按照用戶之需要可使模組之光源輸出變暗。 如本文所揭示之電源器亦合適於操作一形成顯示器如 液晶顯示器（LCD)之一部分之LED發光模組。 由參考下述實例及闡明本發明之那些其他觀點即更顯 而易見。 附圖： 圖1圖例上顯示連接一 LED發光模組至其上之一電源 圖2顯示一圖解其中顯示經LED發光模組之電流係隨時 間而轉移。 圖3顯示圖1所示系統之第一詳述範例。 圖4顯示圖1所示系統之第二詳述範例。 如圖1所示，電源組件包括一電源器，較佳係一受控制 恒定電流源1，它可供給電流至LED發光模組2。LED發光 1269514 (4) f 090105228號專利申請案 贫两蒙明:¾貢: 中文說明書替換頁(93年10月） 模組2 ’例如LCD之後光，包括眾多可並聯或串聯之發光 二極體（LED)3。圖i圖例上顯示一脈衝控制器4係能切換 受控制之恒足電流源1接通及關斷。為此，脈衝控制器4 可放射係由有波期τ脈波之脈波所組成的脈衝控制信號 5 ’該脈波可用圖2所示之脈衝頻f脈衝切換接通受控制 定電流源1。脈衝頻f脈衝應超過人眼（約70 Hz)能觀察之 頻率因為在較低頻處由led發光模組所產生之閃動會很 厭煩（比較顯示管之監控器）。然而，脈衝頻f脈衝不應超 過一某種值因為此會導致不必要之切換損失量，此外，會 引起不需要’可聽見之背景雜音。 按此範例，受控制之恒定電流源丨係一高頻開關模式電 源（smps)包括一半電橋式變流器，其中由脈衝控制器可切 換此半電橋式變流器接通及關斷。亦合適使用其他高頻變 流器，諸如模型架式變流器，掠返變流器，與其他型變流 器為一受控制恒定電流源。此種熟知之受控制恒定電流源 可輸出直流電流，電流強度及/或可控制之電壓。此種受 控制恒定電流源之特殊特徵是：此直流係一紋波直流，意 即表示電流強度係隨最低值6與最高值7間之高紋波頻道 而變動。此最低值6與最高值7之平均值是受控制恒定電流 源1之平均直流強度8。此電流強度8較佳者係等於所選擇 為L E D發光模組2額定電流的電流如顯示於圖2中，該電流 強度值係以相對強度R標表示。而受控制恒定電流源i之 紋波信號較佳係與脈衝控制信號同步化以便消除額外之 切換損失。 圖2顯不情況其中設定經L E D發光模組之電流之平均大 1269514 (5)Outside to eliminate the disturbing sound effect. Preferably, the current supplied to the LED lighting module by the power supply in the on state has been selected as a constant current of the rated current, and thus the optimal light source output of the LED lighting module is generated, resulting in the rating of the power supply. The current intensity is idealized, which has an advantageous effect on the efficacy. According to a preferred embodiment, the pulse controller is coupled to a sensor capable of measuring the temperature of the LED lighting module and/or the output of the light source, the pulse controller being capable of relying on the sensor when the power supply is in the on state The measured value controls the length of the pulse wave. By this control, the light source output of the module can be stabilized under varying conditions. According to a more preferred embodiment, the wave duration of the pulse wave can be adjusted by the user. By this adjustment, the light source output of the module can be darkened according to the needs of the user. A power supply as disclosed herein is also suitable for operating an LED lighting module that forms part of a display such as a liquid crystal display (LCD). Other aspects of the invention will become more apparent from the following examples. Figure 1 shows a diagram showing the connection of an LED lighting module to one of the power supplies. Figure 2 shows a diagram in which the current through the LED lighting module is transferred over time. Figure 3 shows a first detailed example of the system of Figure 1. Figure 4 shows a second detailed example of the system of Figure 1. As shown in Figure 1, the power supply assembly includes a power supply, preferably a controlled constant current source 1, which supplies current to the LED lighting module 2. LED Illumination 1269514 (4) f 090105228 Patent Application Poverty Two: 3⁄4 Gong: Chinese Manual Replacement Page (October 93) Module 2 'such as LCD backlight, including many LEDs that can be connected in parallel or in series (LED) 3. Figure i shows a pulse controller 4 capable of switching the controlled constant current source 1 on and off. To this end, the pulse controller 4 can emit a pulse control signal 5' composed of a pulse wave having a wave period τ pulse wave. The pulse wave can be switched on and off by the pulse frequency f pulse shown in FIG. . The pulse frequency f pulse should exceed the frequency that can be observed by the human eye (about 70 Hz) because the flashing caused by the LED lighting module at a lower frequency can be annoying (comparing the monitor of the display tube). However, the pulse frequency f pulse should not exceed a certain value because this would result in an unnecessary amount of switching loss and, in addition, would cause unwanted 'audible background noise. According to this example, the controlled constant current source is a high frequency switch mode power supply (smps) including half of the bridge type converter, wherein the half bridge type converter can be switched on and off by the pulse controller. . Other high frequency converters, such as model frame converters, grater converters, and other types of converters are also suitable for use as a controlled constant current source. Such well-known controlled constant current sources can output DC current, current intensity and/or controllable voltage. A special feature of such a controlled constant current source is that the DC system is a ripple DC, meaning that the current intensity varies with a high ripple channel between the lowest value of 6 and the highest value of 7. The average of the lowest value 6 and the highest value 7 is the average DC intensity 8 of the controlled constant current source 1. The current intensity 8 is preferably equal to the current selected as the rated current of the L E D lighting module 2 as shown in Figure 2, and the current intensity value is expressed as a relative intensity R. The ripple signal of the controlled constant current source i is preferably synchronized with the pulse control signal to eliminate additional switching losses. Figure 2 shows the case where the average current of the L E D light-emitting module is set. 1269514 (5)
小9在受控制恒定電流源平均電流8之5〇%。藉設定脈波波 期丁脈波在週波長度（f脈波）之50 %處即可達成此目標。藉 又動脈波波期T脈波，經LED發光模組2之電流9平均大小 可獲得在由受控制恒定電流源1所輸出額定電流之0%與 1 0 0 /。間之任一所需值。為達此目標脈衝控制器4係備有一 ’ 脈波波期調變器。 圖3及4顯示一電源組件1之較佳實例，如圖3所示之電源 組件係可連接至AC電壓源，諸如總電源，如圖4所示電源 __ 組件I係可連接至一 DC電壓源，諸如電池。與圖1共同， 圖3及4所示高頻開關模式電源器包括一受控制恒定電流 源（開關模式電流源）丨，LED發光模組（LED模組）與脈衝控 制器（脈衝控制）4。The small 9 is 5〇% of the average current of the controlled constant current source. This can be achieved by setting the pulse wave period to 50% of the cycle length (f pulse). By means of the T wave of the arterial wave period, the average current 9 of the LED lighting module 2 can obtain 0% and 1 0 0 / of the rated current output by the controlled constant current source 1. Any desired value between. To achieve this goal, the pulse controller 4 is provided with a pulse wave period modulator. 3 and 4 show a preferred example of a power supply assembly 1, the power supply assembly shown in FIG. 3 can be connected to an AC voltage source, such as a total power supply, as shown in FIG. 4, the power supply __ component I can be connected to a DC A voltage source, such as a battery. Together with FIG. 1, the high frequency switch mode power supply shown in FIGS. 3 and 4 includes a controlled constant current source (switch mode current source), LED light emitting module (LED module) and pulse controller (pulse control) 4 .
脈衝控制器4係被連接至一調光裝置（調光界面）丨4其中 係由用戶經一匯流排（BUS)加以設定。調光裝置係能夠藉 由一電壓信號（V調光）控制脈衝控制器4之脈波波期（亦指 稱為脈波寬度）T脈波。 因LED光源輸出係依靠溫度而定，敌LED發光器2係備 有可觀察LED發光器2之溫度（TEMP —OUT)及/或光源輸出 (OPT —OUT)之感測器。此感測器可發送一電壓信號（分別 為VTF及VOF)至脈衝控制器4，該電壓信號亦能夠控制脈 波波期T脈波。藉藉此反饋能有效地穩定L E D發光模組2 之光源輸出。 依據圖3，按已知就本身而言之方式，由一濾波器/整流 器0山6/1^(^)1〇與一預先準備裝置（預先準備器）11可饋 -10-The pulse controller 4 is connected to a dimming device (dimming interface) 丨 4 which is set by the user via a bus (BUS). The dimming device is capable of controlling the pulse wave period (also referred to as pulse width) T pulse of the pulse controller 4 by a voltage signal (V dimming). Since the LED light source output depends on the temperature, the enemy LED illuminator 2 is equipped with a sensor that can observe the temperature of the LED illuminator 2 (TEMP_OUT) and/or the light source output (OPT_OUT). The sensor can send a voltage signal (VTF and VOF, respectively) to the pulse controller 4, which can also control the pulse wave period T pulse. By using this feedback, the light source output of the LED lighting module 2 can be effectively stabilized. According to Fig. 3, in a manner known per se, a filter/rectifier 0/6^(^)1〇 and a pre-preparation device (pre-prepator) 11 can feed -10-
1269514 ⑹ 逆受控制之恒定電流源1，兩裝置係用接頭端L · N及P E連 接至，例如，一接地總電源（1 1 OV/6 0 Hz或23 0 V/5 0 Hz)。 就低電源系統（<2 5 W)之情況言，可用一簡單能源緩衝器 替代預先準備裝置。為免除任何有關預先準備裝置穩定性 之問題，藉一同步化信號（S y n c)使脈衝控制信號與總電源 電壓信號同步化是很重要。補助電源器（補助電源）1 5可供 給系統之不同零件所必需之低電壓供給。 依據圖4，由D C滤波器（滤波器）1 2，與選項上一 d c / D C 變流器（DC-DC變流器）13，饋送受控制之恒定電流源1， 兩者被連接至一蓄電池或有接頭端L及N之一電瓶。 式元件符號說明 1 受控制恒定電流源 14 調光裝置 2 led發光模組 15 補助電源器 3 發光二極體 I 電源組件 4 脈衝控制器 5 脈衝控制信號 6 最低值（最小值） 7 最高值（最大值） 8 平均直流強度 9 電流之平均大小 10 爐、波器/整流器 11 預先準備裝置 12 D C滤波器 13 DC/DC變流器1269514 (6) Invertedly controlled constant current source 1, the two units are connected to the ground terminals L · N and P E, for example, a grounded mains supply (1 1 OV/6 0 Hz or 23 0 V/5 0 Hz). In the case of a low power system (<25 W), a simple energy buffer can be used in place of the pre-preparation device. In order to avoid any problems with the stability of the device in advance, it is important to synchronize the pulse control signal with the total supply voltage signal by means of a synchronization signal (S y n c). Subsidized power supply (subsidized power supply) 15 is available for the low voltage supply necessary for different parts of the system. According to FIG. 4, a controlled constant current source 1 is fed by a DC filter (filter) 12 and an optional dc / DC converter (DC-DC converter) 13, both of which are connected to one The battery or one of the terminals L and N. Symbol description 1 Controlled constant current source 14 Dimming device 2 Led lighting module 15 Subsidiary power supply 3 Light-emitting diode I Power supply unit 4 Pulse controller 5 Pulse control signal 6 Minimum value (minimum value) 7 Highest value ( Maximum) 8 Average DC intensity 9 Average current of the current 10 Furnace, wave/rectifier 11 Pre-preparation device 12 DC filter 13 DC/DC converter