200935694 六、發明說明： 【發明所屬之技術領域】 本發明係有關一種進行使用於電力用設備（plant)等 之馬達的啟動控制/保護等之控制中心，尤其有關一種顯 示控制中心的負載狀態之顯示部。 【先前技術】. 控制中心係將主電路開閉器、保護裝置、以及監視控 制器具等集結於每個單元，且集合性地組入至已閉鎖的外 ❹箱之裝置。 第4圖係顯示習知控制中心的一例之斜視圖。第5圖 係内部所收容的控制單元的斜視圖。如第4圖所示，控制 中心的箱體21的内部係區劃成上下複數段而形成複數個 單元室，且在各單元室的前面設置有開閉門22。控制單元 23係以可輕易地從前面自由拉出之方式收容於單元室内。 如第5圖所示，控制單元23係於框體24的内部收容 有主電路電源的開啟（0N) /切斷(OFF)之切換用的斷路器 25、電磁開閉器、以及變壓器等主電路機器，且於框體24 的前面侧配置有顯示運轉狀況的顯示燈26與操作開關等 之監視控制器具。 ： 於該控制單元23收容於箱體21的單元室的狀態下， 以可進行斷路器25的操作把手之操作、顯示燈26之監視、 以及操作開關之操作之方式，在前述開閉門22設置有開口 窗22a(參照例如專利文獻1)。 專利文獻1 :日本特開平10-293601號公報（第2至3 3 320347 200935694 頁、第1.圖及第3圖） 【發明内容】 (發明所欲解決之課題） 由於控制單元23需要配合控制對象負載的數量，因此 . 一般如第4圖所示，複數面的控制中心係配置成一橫排， - 且根據規模甚至會配置成複數排來構成整個控制中心。 在上述習知的控制中心，當控制對象負載中發生異常 時，會使控制單元23的顯示燈26點亮或閃爍，藉此將異 © 常告知操作員。當控制對象負載的數量非常多時，由於控 制中心的控制單元23的數量亦會變得非常多，所以縱使為 了由任一個控制單元23通知異常而使顯示燈26點亮或閃 爍，亦有難以從多數個控制單元23中立即判別該異常的控 制單元之問題。 本發明乃為了解決上述問題而研創者，其目的係提供 一種能容易地從配設多數個控制中心的控制單元中判別通 Q 知負載異常的控制單元之控制中心。 (解決課題的手段） 本發明的控制中心係以具有負載的開閉/保護用之主 電路機器與保護控制機器、以及用以顯示負載狀態的顯示 部之控制單元收容於箱體内區劃成多段的單元室，且顯示 部可從箱體的外部目視確認之方式所構成，其中，顯示部 係具備安裝有背光的液晶顯示元件，在正常時及發生異常 時背光的顏色會改變。 (發明之效果） 320347 200935694 依據本發明的控制中心，由於構成控制中心之控制單 元的顯示部係以具備安裝有背光的液晶顯示元件，且在正 常時與發生異常時背光的顏色會改變的方式構成，因此當 控制對象的負載發生異常時，可容易地從多數配設的控制 中心的控制單元中判別已異常顯示的控制單元，而能迅速 地處理負載的異常。 【實施方式】 實施形態一 © 第1圖係本發明實施形態一的控制中心的部分正面 圖。由於控制中心的整體構成係與先前技術的項中所說明 的第4圖同等，因此省略圖示及說明。第1圖係相當於將 第4圖所示的控制中心之配置在多段中的一部分的控制單 元予以放大之部分。 在第1圖中，控制中心1之成為外箱的箱體2的内部_ 區劃成複數個區域，而在前面多段式地形成具有開口部的 q 單元室3。於各單元室3的前面開口部設置開閉門4而能 開閉單元室3 ,並以可拉出之方式將控制單元5收容於單 元室3内。第1圖係顯示收容有複數段控制單元5中的兩 段份，上段係顯示開啟開閉門4而能看到收容於單元室3 内部的控制單元5的前面部之狀態，下段係顯示關閉開閉 門4之狀態。 如第1圖所示，當開啟開閉門4時，可從前面看到的 機器為：用以將主電路電源予以開啟/切斷之斷路器7的 操作把手7a、具有電子式繼電器或CPU等電子零件且收容 320347 200935694 於殼體之保護控制繼電器8、以及控制線連接用的端子台 9。在這些構件的内側，在框體6内還配置有電磁開閉器、 控制變壓器等主電路機器、以及電流感測器等保護控制機 器，並被框體6支持固定。這些構件係構成控制單元5。 然而，所收容的機器/構件會因為成為控制對象的負載或 單元的功能而不同。於保護控制繼電器8的前面侧設置有 顯示負載狀態的顯示部10。 於開閉門4之對應操作把手7a與顯示部10的部分設 〇 有呈開口狀態的窗4a，俾當關閉了開閉門4時，能從外部 操作斷路器7的操作把手7a，並能目視確認顯示部10。 第2圖係顯示部10的放大圖，顯示從開閉門4的外部 能看到的部分。 顯示部10係具有：LED(發光二極體）顯示部11，係顯 示運轉、停止、故障、傳送異常等之運轉狀態；以及液晶 顯示部12，係顯示主電路電流、跳脫電流（trip current)、 ❹ 錯誤碼、故障要因等。該液晶顯示部12係以安裝有背光的 液晶顯不元件13所構成。 此外，雖然顯示部10的下部侧係成為配置有控制開關 或模式開關類之開關部14,但由於並非本發明的主要部 分，因此省略其說明。 第3圖係顯示第2圖的液晶顯示部12的詳細圖。舉例 而言，在正常運轉時，會於液晶顯示部12大字地顯示主電 路電流值，而在負載發生跳脫等異常之異常狀態時，會顯 示跳脫電流值。 6 320347 200935694 13 STNCSuper Twist :=，超扭轉向列)型。此外，液晶顯示元件 =顯=字部13為明顯示，文字部外的背景部⑽ :二:=t1 ν〇顯示，顯示的晝面為負片，亦即 ^曰一際相反）。此外，背光的顏色設為白色與橘色兩種 顏色。此外，文字部亦包含記號等。 ❹ 的穿=蚀在正常運轉時，使背光以白色點亮，藉由背光 ^穿透先使文字部13a顯示白色。此時，文字料㈣背 ，部13b的顏色為STN型特有的藍色，藉由背光可看到明 壳的藍色。 當^發生異常並要通知該異常時，使背光變化成橘 ’並猎由背光的穿透光使文字部13a顯示明亮的橘色。 夺文子。ρ以外的背景部！ 3b的顏色由藍色與背光的橘 色合成，而成為偏藍的暗橘色。 在第3圖中，雖以片段（segment)方式顯示文字部，但 ❹亦可以點矩陣方式來顯示。 接著’說明上述構成的顯示部1〇的作用、 如同在先前技術的第4圖所說明，控制中心丨係為複 數個控制巾心配置（排列）成—橫排，而在大規模的電力設 備等中’係於前後配置有複數排須配置的控制中心來構 成在大多數的情形中，例如有在橫方向排列1〇面以上者 配置超過10排的情形。於各控制中心1的箱體2内部多段 式，收合控制單元5,且於每個控制單元5設置顯示部^， 故夕數個顯不部1〇會整齊地排列。在運轉時，作業員會一 320347 200935694 邊巡迴排列配置的控制中心丄之間的通道〆邊監視各控制 單元的顯示部10 ’以進行負载的運轉控制、維護、檢查。 若在負载發生異常時’雖然發生異常的控制單元5的 顯不10會通知異常，但如上所述，為了迅速地從排列非 常多的顯示部10中找出顯示異常的控制科5，期望儘可 能從遠方就能目視確認顯示部。在習知的控制中心中，雖200935694 6. TECHNOLOGICAL FIELD OF THE INVENTION The present invention relates to a control center for performing start control/protection of a motor used in a power plant or the like, and more particularly to a load state of a display control center. Display section. [Prior Art] The control center integrates a main circuit switch, a protection device, and a monitoring control device into each unit, and collectively assembles the device to the locked outer box. Fig. 4 is a perspective view showing an example of a conventional control center. Figure 5 is a perspective view of the control unit housed inside. As shown in Fig. 4, the inner portion of the casing 21 of the control center is divided into a plurality of upper and lower sections to form a plurality of unit chambers, and an opening and closing door 22 is provided in front of each unit chamber. The control unit 23 is housed in the unit chamber so as to be easily freely pulled out from the front. As shown in FIG. 5, the control unit 23 houses a main circuit such as a circuit breaker 25 for switching ON (ON)/OFF (OFF) of the main circuit power supply, an electromagnetic switch, and a transformer, etc., inside the casing 24. In the machine, a display lamp 26 for displaying an operation state, a monitoring controller such as an operation switch, and the like are disposed on the front side of the casing 24. In the state in which the control unit 23 is housed in the unit chamber of the casing 21, the operation of the operation handle of the circuit breaker 25, the monitoring of the display lamp 26, and the operation of the operation switch are provided in the opening and closing door 22. There is an opening window 22a (see, for example, Patent Document 1). Patent Document 1: Japanese Laid-Open Patent Publication No. Hei No. 10-293601 (No. 2 to 3 3 320347 200935694, No. 1 and FIG. 3) [Problem to be Solved by the Invention] Since the control unit 23 needs to be cooperatively controlled The number of object loads, therefore. Generally, as shown in Fig. 4, the control centers of the complex faces are arranged in a horizontal row, and - even according to the scale, they are arranged in a plurality of rows to constitute the entire control center. In the above-mentioned conventional control center, when an abnormality occurs in the load of the control object, the display lamp 26 of the control unit 23 is turned on or blinked, thereby informing the operator of the abnormality. When the number of control target loads is very large, since the number of control units 23 of the control center also becomes very large, it is difficult to cause the display lamp 26 to light or blink in order to notify an abnormality by any one of the control units 23. The problem of the abnormal control unit is immediately discriminated from the plurality of control units 23. The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a control center capable of easily determining a control unit of a known load abnormality from a control unit in which a plurality of control centers are disposed. (Means for Solving the Problem) The control center of the present invention is housed in a plurality of stages by a control unit for opening and closing/protecting a main circuit device, a protection control device, and a display unit for displaying a load state. The unit room is configured to be visually identifiable from the outside of the casing. The display unit includes a liquid crystal display element on which a backlight is mounted, and the color of the backlight changes during normal operation and when an abnormality occurs. (Effect of the Invention) 320347 200935694 According to the control center of the present invention, since the display unit constituting the control unit of the control center is provided with a liquid crystal display element on which a backlight is mounted, and the color of the backlight changes when normal and when an abnormality occurs According to the configuration, when an abnormality occurs in the load of the control target, the control unit that has been abnormally displayed can be easily discriminated from the control unit of the plurality of assigned control centers, and the abnormality of the load can be quickly processed. [Embodiment] Embodiment 1 FIG. 1 is a partial front view of a control center according to Embodiment 1 of the present invention. Since the overall configuration of the control center is the same as that of Fig. 4 described in the prior art, the illustration and description are omitted. The first drawing corresponds to a part in which the control unit of the control center shown in Fig. 4 is enlarged in a part of the plurality of stages. In Fig. 1, the inside of the casing 2 which becomes the outer casing of the control center 1 is divided into a plurality of regions, and the q-unit chamber 3 having the opening portion is formed in a plurality of stages in the front. The opening and closing door 4 is provided in the front opening portion of each unit chamber 3 to open and close the unit chamber 3, and the control unit 5 is housed in the unit chamber 3 so as to be pullable. Fig. 1 shows two sections of the plurality of control units 5 housed, and the upper section shows the state in which the opening and closing door 4 is opened and the front portion of the control unit 5 housed inside the unit compartment 3 is visible, and the lower section shows the closing and closing. The state of the door 4. As shown in Fig. 1, when the opening and closing door 4 is opened, the machine that can be seen from the front is the operation handle 7a of the circuit breaker 7 for turning on/off the main circuit power supply, and has an electronic relay or a CPU, etc. The electronic component houses 320347 200935694 protection control relay 8 for the housing and terminal block 9 for control line connection. Inside the casing 6, a main circuit device such as an electromagnetic switch, a control transformer, and a protection control device such as a current sensor are disposed in the casing 6, and are supported and fixed by the casing 6. These components constitute the control unit 5. However, the contained machine/component differs depending on the function of the load or unit to be controlled. A display unit 10 that displays a load state is provided on the front side of the protection control relay 8. The window 4a in the open state is provided in the portion of the opening and closing door 4 corresponding to the operation handle 7a and the display unit 10. When the opening and closing door 4 is closed, the operation handle 7a of the circuit breaker 7 can be operated from the outside and can be visually confirmed. Display unit 10. The second drawing is an enlarged view of the display unit 10, and shows a portion that can be seen from the outside of the opening and closing door 4. The display unit 10 includes an LED (Light Emitting Diode) display unit 11 that displays an operation state such as operation, stop, failure, and transmission abnormality, and a liquid crystal display unit 12 that displays a main circuit current and a trip current (trip current). ), ❹ Error code, cause of failure, etc. The liquid crystal display unit 12 is constituted by a liquid crystal display element 13 to which a backlight is mounted. Further, the lower portion of the display unit 10 is a switch unit 14 in which a control switch or a mode switch is disposed. However, since it is not a main portion of the present invention, the description thereof will be omitted. Fig. 3 is a detailed view showing the liquid crystal display unit 12 of Fig. 2 . For example, during normal operation, the main circuit current value is displayed in a large size on the liquid crystal display unit 12, and the trip current value is displayed when an abnormal abnormal state such as a trip occurs. 6 320347 200935694 13 STNCSuper Twist :=, super twisted nematic). Further, the liquid crystal display element = display = word portion 13 is a bright display, and the background portion (10) outside the character portion: two: = t1 ν 〇 display, the displayed face is a negative film, that is, the opposite is true. In addition, the color of the backlight is set to white and orange. In addition, the text department also includes symbols and the like.穿 The wear of the = 蚀 在 正常 正常 正常 正常 正常 正常 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光 背光At this time, the color of the back material of the text material (4) and the color of the portion 13b are the blue color unique to the STN type, and the blue color of the bright shell can be seen by the backlight. When an abnormality occurs and the abnormality is to be notified, the backlight is changed to orange ‘and the light transmitted by the backlight causes the character portion 13a to display a bright orange color. Take the text. Background part other than ρ! The color of 3b is composed of blue and backlit orange, and becomes a dark blue dark orange. In Fig. 3, although the character portion is displayed in a segment manner, the frame portion can be displayed in a matrix manner. Next, the function of the display unit 1 constituting the above configuration will be described. As explained in FIG. 4 of the prior art, the control center is configured to arrange (arrange) a plurality of control towel cores in a horizontal row, and in a large-scale power device. In the case where the control center is arranged in a plurality of rows, the control center is arranged in a plurality of rows. For example, there are cases in which more than 10 rows are arranged in the horizontal direction. The inside of the casing 2 of each control center 1 is multi-staged, and the control unit 5 is folded, and the display unit ^ is provided for each control unit 5, so that the plurality of display portions 1〇 are arranged neatly. During operation, the operator monitors the display unit 10' of each control unit by the channel between the control centers 320 arranged in a row of 320347 200935694 to perform load operation control, maintenance, and inspection. When an abnormality occurs in the load, the abnormality of the control unit 5 that has an abnormality will notify the abnormality. However, as described above, in order to quickly find out the control section 5 that displays an abnormality from the display unit 10 having a large number of arrays, it is desirable to do so. It is possible to visually confirm the display portion from a distance. In the conventional control center, though
主要以LED _示部的燈之閃蝶等來通知異常，但由於LED 為小的點光源’在上述具有多數個顯示部的控制 中〜群中難以迅速地發現位於通道遠方位置的控制單元$ 的顯示部10的異常顯示。 因此在本發明中’係以安裝有背光的液晶顯示元件 13作為液晶顯㈣12，並在異常時會改變背光的顯示顏 色。亦即’在發生異常時，在發生異常的控制單元5的顯 不部1〇中會使LED顯示部n的故障燈點亮或閃燦，並且， 液晶顧示部12會顯示例如跳脫電流值，且背光會從白色切 ❹換成橘色。藉此，作業員能迅速地從非常多的顯示部中 找出異常的控制單元5，並迅速地對應。 在此，說明在液晶顯示元件13採用咖型、將明暗顯 負性顯示、採用白色與橘色兩種顏色作為背光顏色 控制中心係集中多數個電動機等負载，且進行開閉、 控制、保護之開閉控制裝置，係被要求能長期穩定^用之 南可[I因此’液晶顯示部12亦必須為壽命長且 性者，基於該理由’到目前為止大都在液晶顯示^採用 320347 8 200935694 TN(Twist Nematic ;拉轉向列）型，而TN型存在有視野角 狹窄的缺點。在從遠離的位置目視排列的控制中心1的顯 示部10時，由於從非常斜的角度目視，因此期望液晶顯示 部12的視角儘量寬廣。 因此，採用與ΤΝ型相同壽命長，但具有視角比ΤΝ型 還廣的STN型。藉此，可一邊維持高壽命與高可靠性，一 邊獲得可從遠方目視確認的顯示部10。 此外，在將正性（positive，顯示晝面的明暗與實際目 〇 視相同）顯示或負性顯示、背光的顏色以各種方式組合所獲 得的實驗結果，得知在周圍環境的亮度變化時，負性顯示 的目視確認性會優於正性顯示，且使背光從白色（正常時） 變成橘色（異常時）之組合，顯示異常的目視確認性較佳。 亦即，作為顯示異常時的背景色，可知STN型元件的藍色 與背光的橘色之合成色在色彩上不會有不協調感，能獲得 高對比，且能容易與正常時顯示部的背景色亮的藍色） ◎ 區別.。 如此，藉由背光採用白色與橘色，在正常運轉時會於 明亮的藍色背景顯示白色文字，因此能清楚地目視確認文 字，而在、發生異常時會於偏藍的暗橘色背景浮現明亮的橘 色文字，因此在發生異常時，可從遠方清楚地判別異常顯 示0 此外，在異常時，橘色的背光係不僅可點亮，亦可閃 爍。亦可僅使文字部13a閃爍等，或亦可組合點亮與閃爍。 如上所述，依據本實施形態的控制中心，構成控制中 9 320347 200935694 心之控制單元的顯示部係以具備安裝有背光的液晶顯示元 件，且在正常時與發生異常時會改變背光的顏色之方式來 構成，因此在控制對象的負載發生異常時，能容易地從多 數排列的控制中心的控制單元中判別異常顧示的控制單 元，而能迅速地處理負載的異常。 此外，由於液晶顯示元件為STN型，因此具有廣視角， 能從遠方判別顯示部的異常顯示，且由於壽命長，故能維 持高可靠性。 〇 此外，由於液晶顯示元件的明暗顯示係將文字部設為 明亮顯示，將文字部以外的背景設為暗顯示之負性顯示， 因此與正性顯示相比，能提高發生異常時顯示部的目視確 認性，而能提供容易目視的顯示部。 並且，由於以白色與橘色兩種顏色來作為背光的顏 色，且在正常時使背光以白色點亮並以白色顯示文字部， 而在發生異常時使背光以橘色點亮並以橘色顯示文字部之 0 方式來構成，因此能提高發生異常時顯示部的目視確認 性，可容易從遠方判別異常顯示，故在異常時能迅速地對 應。 . · . . . - 【圖式簡單說明】 第1圖係顯示本發明實施形態一的控制中心的部分正 面圖。 第2圖係顯示收容於第1圖的控制中心的控制單元所 具備的顯示部之圖。 、 弟3圖係顯不第2圖的液晶顯不部之圖。 10 320347 200935694 第4圖係顯示習知的控制中心之斜視圖。 圖 第5圖係收容於第4 _控制中心的控制單元之斜視 【主要元件符號說明】 1 控制中心 3 單元室 4a 窗 6、24框體 ® 7 a操作把手 9 端子台 LED顧示部 液晶顯示元件 13b 背景部 · 22a 開口窗 ❹ 2、21箱體 4、22 開閉Η 5 ' 23 控制單元 7 ' 25 斷路器 8 保護控制繼電器 10 顯示部 12 液晶顯示部 13a 文字部 14 開關部 26 顯示燈 320347 11The abnormality is mainly notified by the flash of the LED light of the LED _ section, but since the LED is a small point light source, it is difficult to quickly find the control unit located at the remote position of the channel in the control group having the plurality of display portions described above. The abnormal display of the display unit 10. Therefore, in the present invention, the liquid crystal display element 13 on which the backlight is mounted is used as the liquid crystal display (12) 12, and the display color of the backlight is changed in an abnormal state. That is, when an abnormality occurs, the failure lamp of the LED display portion n is turned on or flashed in the display portion 1 of the control unit 5 where the abnormality has occurred, and the liquid crystal display portion 12 displays, for example, the trip current. Value, and the backlight will change from white to orange. Thereby, the operator can quickly find the abnormal control unit 5 from a very large number of display portions and quickly respond. Here, it is explained that the liquid crystal display element 13 uses a coffee type, displays a light and dark display, and uses two colors of white and orange as a backlight color control center to concentrate a load such as a plurality of motors, and opens and closes, controls, and protects the opening and closing. The control device is required to be stable for a long time. [I therefore' the liquid crystal display unit 12 must also have a long life and sex. For this reason, most of the liquid crystal displays have been used so far. 320347 8 200935694 TN (Twist Nematic; pull steering column type, while TN type has the disadvantage of narrow viewing angle. When the display portion 10 of the control center 1 is visually arranged from a distant position, since it is visually observed from a very oblique angle, it is desirable that the viewing angle of the liquid crystal display portion 12 be as wide as possible. Therefore, the STN type which has the same long life as the ΤΝ type but has a wider viewing angle than the ΤΝ type is used. Thereby, the display unit 10 which can be visually confirmed from a remote side can be obtained while maintaining high life and high reliability. In addition, in the positive (positive, showing the brightness of the face is the same as the actual eye) display or negative display, the color of the backlight is combined in various ways to obtain the experimental results, when the brightness of the surrounding environment changes, The visual confirmation of the negative display is superior to the positive display, and the backlight is changed from white (normal) to orange (when abnormal), and the visual confirmation of the abnormality is better. That is, as the background color when the abnormality is displayed, it is understood that the blue color of the STN type element and the orange color of the backlight do not have a sense of discomfort in color, and high contrast can be obtained, and the display portion of the normal time can be easily obtained. Background bright blue) ◎ difference. In this way, by using white and orange backlights, white text is displayed on a bright blue background during normal operation, so that the text can be clearly visually recognized, and when an abnormality occurs, it appears on a bluish dark orange background. Bright orange text, so when an abnormality occurs, the abnormal display can be clearly recognized from a distance. In addition, in the case of an abnormality, the orange backlight can be illuminated or flickered. It is also possible to cause only the character portion 13a to blink or the like, or to combine lighting and flickering. As described above, according to the control center of the present embodiment, the display unit of the control unit of the control unit 9 320347 200935694 is provided with the liquid crystal display element on which the backlight is mounted, and the color of the backlight is changed in the normal state and when an abnormality occurs. According to the configuration, when an abnormality occurs in the load of the control target, the control unit of the abnormality can be easily discriminated from the control unit of the plurality of arranged control centers, and the abnormality of the load can be quickly processed. Further, since the liquid crystal display element is of the STN type, it has a wide viewing angle, can discriminate the abnormal display of the display portion from a distance, and has a long life, so that high reliability can be maintained. In addition, since the light and dark display of the liquid crystal display element is a bright display of the character portion and a negative display of the background other than the character portion, the display portion can be improved in comparison with the positive display. Visually confirmable, it is possible to provide a display portion that is easy to visualize. Moreover, since the colors of the backlight are used in two colors of white and orange, and the backlight is lit in white and the character portion is displayed in white when normal, the backlight is lit in orange and orange in the event of an abnormality. Since the character portion of the character portion is displayed, it is possible to improve the visibility of the display unit when an abnormality occurs, and it is possible to easily recognize the abnormality display from a distance, so that it can quickly respond to an abnormality. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial front elevational view showing a control center according to a first embodiment of the present invention. Fig. 2 is a view showing a display unit provided in a control unit housed in the control center of Fig. 1. The picture of the LCD is not shown in the second picture. 10 320347 200935694 Figure 4 is a perspective view showing a conventional control center. Figure 5 is a squint of the control unit housed in the 4th _ control center [Description of main components] 1 Control center 3 Unit 4a Window 6, 24 Frame® 7 a Operation handle 9 Terminal block LED indicator LCD display Element 13b Background part 22a Opening window 2, 21 cases 4, 22 Opening and closing Η 5 ' 23 Control unit 7 ' 25 Circuit breaker 8 Protection control relay 10 Display unit 12 Liquid crystal display unit 13a Character part 14 Switch part 26 Display lamp 320347 11