JP5330705B2 - Emergency lighting system - Google Patents

Emergency lighting system Download PDF

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JP5330705B2
JP5330705B2 JP2008028189A JP2008028189A JP5330705B2 JP 5330705 B2 JP5330705 B2 JP 5330705B2 JP 2008028189 A JP2008028189 A JP 2008028189A JP 2008028189 A JP2008028189 A JP 2008028189A JP 5330705 B2 JP5330705 B2 JP 5330705B2
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light
light output
emitting diode
circuit
power failure
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JP2009187845A (en
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伸介 西岡
仁幸 広瀬
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Panasonic Corp
Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-costed emergency lighting system improved in visibility. <P>SOLUTION: The emergency lighting system A comprises: a LED block 1 formed of a plurality of light-emitting diodes arranged along the edge of a light guiding board arranged in the back surface of a display panel; a charge/discharge circuit 4 for charging a secondary battery 3 by receiving supply from a commercial power source AC; a lighting circuit 5 for supplying lighting power to the LED block 1 by receiving the power supply from the commercial power source AC in electrical continuity and for supplying lighting power to the LED block 1 by receiving power supply from the secondary battery 3 through the charge/discharge circuit 4 in interruption of service; and a control circuit 8 for controlling output of the lighting circuit 5 so as to turn on the LED block 1 with a constant optical output in normal operation where an abnormality informing signal, which reports the outbreak of a fire and an interruption of service, is not input and for controlling output of the lighting circuit 5 so as to periodically change optical output of the LED block 1 when the abnormality informing signal is input. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

本発明は、非常用照明装置に関するものである。   The present invention relates to an emergency lighting device.

従来、公共の施設において、火災などの非常時に施設内の人を避難させるための非常用照明装置が設置されており（例えば特許文献１参照）、最終避難口の近くに設置される非常用照明装置の場合は、避難者を最終避難口に注目させることができるよう、非常時に光源を点滅させる機能を備えたものが使用されていた。なお現行の日本の消防法においては、最終の避難口の近くに設置された非常用照明装置を点滅させることが可能となっている。   Conventionally, in a public facility, an emergency lighting device has been installed to evacuate people in the facility in the event of an emergency such as a fire (see, for example, Patent Document 1), and an emergency lighting installed near the final evacuation exit In the case of the device, a device having a function of blinking the light source in an emergency was used so that the refugee could be focused on the final evacuation exit. Under the current Japanese Fire Service Law, it is possible to blink an emergency lighting device installed near the final evacuation exit.

図４は従来の非常用照明装置の回路ブロック図を示し、避難経路を示す図案を表示した表示パネルに光を照射する冷陰極蛍光灯３２を備えるとともに、最終避難口の近くに設置される場合に点滅表示を行うためのキセノンランプ３５を備えており、商用電源ＡＣの通電時には商用電源ＡＣからの電力供給を受けて、誘導灯ブロック３１が冷陰極蛍光灯３２を点灯させるとともに、誘導灯ブロック３１およびキセノン電源ブロック３３がそれぞれ電池３６，３７を充電する。そして、商用電源ＡＣが停電すると、電池３６からの電力供給を受けて、誘導灯ブロック３１が冷陰極蛍光灯３２を点灯させるとともに、キセノン電源ブロック３３が電池３７からの電力供給を受けてキセノン点滅ブロック３４に点灯電力を供給し、キセノン点滅ブロック３４がキセノンランプ３５を点滅させるようになっている。   FIG. 4 shows a circuit block diagram of a conventional emergency lighting device, in which a cold cathode fluorescent lamp 32 for irradiating light to a display panel displaying a design showing an evacuation route is provided and installed near the final evacuation exit Is provided with a xenon lamp 35 for performing blinking display, and when the commercial power source AC is energized, power is supplied from the commercial power source AC so that the guide lamp block 31 lights the cold cathode fluorescent lamp 32 and the guide lamp block 31 and the xenon power supply block 33 charge the batteries 36 and 37, respectively. When the commercial power supply AC fails, the power supply from the battery 36 is received, the guide lamp block 31 lights the cold cathode fluorescent lamp 32, and the xenon power supply block 33 receives the power supply from the battery 37 and blinks xenon. The lighting power is supplied to the block 34, and the xenon blinking block 34 blinks the xenon lamp 35.

この非常用照明装置は、表示パネルを照明する光源として冷陰極蛍光灯３２を用いている。しかしながら、冷陰極蛍光灯３２は短い周期での点滅動作に不向きなため、冷陰極蛍光灯３２とは別にキセノンランプ３５を設け、火災報知器などの信号によりキセノンランプ３５を点滅させることによって、最終避難口の近くに設置された非常用照明装置に避難者を注目させていた。
特開２０００−２２３２８３号公報 This emergency lighting device uses a cold cathode fluorescent lamp 32 as a light source for illuminating the display panel. However, since the cold cathode fluorescent lamp 32 is not suitable for blinking operation in a short cycle, a xenon lamp 35 is provided separately from the cold cathode fluorescent lamp 32, and the xenon lamp 35 is caused to blink by a signal from a fire alarm or the like. Evacuees were focused on the emergency lighting equipment installed near the evacuation exit.
JP 2000-223283 A

上記構成の非常用照明装置では、常時点灯する冷陰極蛍光灯３２とは別に、火災発生時に点滅動作させるためのキセノンランプ３５を設けており、そのため冷陰極蛍光灯３２を点灯させる誘導灯ブロック３１に加えて、キセノンランプ３５を点滅させるキセノン電源ブロック３３およびキセノン点滅ブロック３４が必要になるから、コストアップになるという問題があった。   In the emergency lighting device having the above-described configuration, a xenon lamp 35 for blinking operation in the event of a fire is provided in addition to the cold cathode fluorescent lamp 32 that is always lit. Therefore, a guide lamp block 31 that lights the cold cathode fluorescent lamp 32 is provided. In addition, since the xenon power supply block 33 and the xenon blinking block 34 for blinking the xenon lamp 35 are required, there is a problem that the cost increases.

本発明は上記問題点に鑑みて為されたものであり、その目的とするところは、視認性を向上させた低コストの非常用照明装置を提供することにある。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a low-cost emergency lighting device with improved visibility.

上記目的を達成するために、請求項１の発明は、表示パネルの背面に配置された導光板と、導光板の端縁に沿って配置された発光ダイオードからなる発光ダイオードと、商用電源の供給を受けて二次電池を充電する充電回路と、通電時は商用電源から電力供給を受けて発光ダイオードに点灯電力を供給し、停電時は二次電池から電力供給を受けて発光ダイオードに点灯電力を供給する点灯回路と、異常の発生を報知する異常発報信号が入力されていない通常時には発光ダイオードを一定の光出力で点灯させるように点灯回路の出力を制御し、異常発報信号が入力されると発光ダイオードの光出力を周期的に変化させるように点灯回路の出力を制御する制御回路とを備え、通電中の異常発生時には、通常時の光出力と同等以上の光出力とする明期間と、通常時の光出力よりも暗い光出力とする暗期間が交互に繰り返すように制御回路が発光ダイオードの光出力を制御し、停電時には、通常時の光出力よりも暗い所定の光出力とする明期間と、明期間よりも光出力がより暗い暗期間が交互に繰り返すように制御回路が発光ダイオードの光出力を制御し、制御回路は、停電時における発光ダイオードの光出力の最大値を、通常時における発光ダイオードの光出力よりも低下させ、且つ、通電中の異常発生時における発光ダイオードの光出力の最大値を、通常時における発光ダイオードの光出力と同等か若しくはそれ以上とすることを特徴とする。 In order to achieve the above object, the invention of claim 1 is directed to a light guide plate disposed on the back surface of the display panel, a light emitting diode comprising light emitting diodes disposed along an edge of the light guide plate, and supply of commercial power. The charging circuit that charges the secondary battery in response to the power supply, and when energized, receives power from the commercial power supply to supply the lighting power to the light-emitting diode, and in the event of a power failure, receives power from the secondary battery to power the light-emitting diode. A lighting circuit that supplies light and an abnormal alarm signal that notifies the occurrence of an abnormality are not input. The output of the lighting circuit is controlled so that the light emitting diode is lit at a constant light output at normal times, and an abnormal alarm signal is input. is to as a control circuit for controlling the output of the lighting circuit so that the optical output periodically changing the light-emitting diodes, when an abnormality occurs in the power is a light for normal light output equal to or higher than the light output during The control circuit controls the light output of the light-emitting diode so that the light output is dark and darker than the normal light output alternately. In the event of a power failure, the light output is darker than the normal light output. The control circuit controls the light output of the light emitting diode so that the light period and the dark period in which the light output is darker than the light period are alternately repeated. Is lower than the light output of the light emitting diode in the normal state, and the maximum value of the light output of the light emitting diode when the abnormality occurs during energization is equal to or higher than the light output of the light emitting diode in the normal state. It is characterized by that.

請求項２の発明は、請求項１の発明において、異常発報信号は、外部の自動火災報知機から入力される火災報知信号であることを特徴とする。   According to a second aspect of the present invention, in the first aspect of the invention, the abnormal alarm signal is a fire alarm signal input from an external automatic fire alarm.

請求項３の発明は、請求項１の発明において、商用電源の停電を検知すると停電検知信号を発生する停電検知回路を備え、異常発報信号が、停電検知回路から制御回路に入力される停電検知信号であることを特徴とする。   According to a third aspect of the present invention, in the first aspect of the present invention, the power failure detection circuit is provided that generates a power failure detection signal when a power failure of the commercial power source is detected, and the abnormal alarm signal is input from the power failure detection circuit to the control circuit. It is a detection signal.

請求項１の発明によれば、制御回路は、異常発報信号が入力されると、発光ダイオードの光出力を周期的に変化させるように点灯回路の出力を制御しているので、発光ダイオードの光が導光板を介して照射される表示パネルの表示面輝度を周期的に変化させることで、非常用照明装置に避難者を注目させて、非常用照明装置の位置をさらに容易に知らしめることができる。しかも、表示パネルに光を照射する光源として、入力電流に応じて光出力を容易に変化させることができる発光ダイオードを用いることによって、光出力を周期的に変化させるための光源を別途用意する必要が無いから、非常用照明装置のコストダウンを図ることができるという効果がある。さらに、異常発生時には制御回路が発光ダイオードの光出力を周期的に変化させているので、発光ダイオードを一定の光出力で点灯させる場合に比べて消費電力を低減することが可能になり、停電時に二次電池を電源として点灯させる場合の点灯時間を延ばすことができる。また二次電池による点灯時間を同程度とした場合は電池容量が小さい二次電池を使用することができ、さらなるコストダウンを図ることができる。しかも、制御回路が、停電時における発光ダイオードの光出力の最大値を、通常時における発光ダイオードの光出力よりも低下させることによって、発光ダイオードを通常時と同等の光出力で点灯させる場合に比べて消費電力を低減できるから、二次電池による点灯時間を延ばすことができ、また二次電池による点灯時間を同程度とした場合は電池容量が小さい二次電池を使用することで、さらなるコストダウンを図ることができるという効果がある。さらに、制御回路が、通電中の異常発生時における発光ダイオードの光出力の最大値を、通常時における発光ダイオードの光出力と同等か若しくはそれ以上とすることで、非常用照明装置に避難者を注目させて、非常用照明装置の位置をさらに容易に知らしめることができる。しかも、制御回路は、異常発生時において発光ダイオードの光出力を周期的に変化させているので、光出力の最大値を、通常時における発光ダイオードの光出力と同等か若しくはそれ以上とした場合でも、全体として発光ダイオードの消費電力を通常時より低減することが可能であり、停電時に二次電池を電源として点灯させる場合の点灯時間を延ばすことができる。また二次電池による点灯時間を同程度とした場合は電池容量が小さい二次電池を使用することで、さらなるコストダウンを図ることができるという効果がある。 According to the first aspect of the present invention, the control circuit controls the output of the lighting circuit so as to periodically change the light output of the light emitting diode when an abnormal alarm signal is input. By periodically changing the display surface brightness of the display panel that is irradiated with light through the light guide plate, the emergency lighting device can be noticed more easily and the position of the emergency lighting device can be more easily known. Can do. In addition, it is necessary to separately prepare a light source for periodically changing the light output by using a light emitting diode that can easily change the light output according to the input current as a light source for irradiating the display panel with light. Therefore, the cost of the emergency lighting device can be reduced. Furthermore, since the control circuit periodically changes the light output of the light emitting diode when an abnormality occurs, it becomes possible to reduce power consumption compared to when the light emitting diode is lit at a constant light output. The lighting time when the secondary battery is turned on as a power source can be extended. Moreover, when the lighting time by a secondary battery is made comparable, a secondary battery with a small battery capacity can be used, and the further cost reduction can be aimed at. In addition, the control circuit reduces the maximum light output of the light emitting diode during a power failure from the light output of the light emitting diode during normal operation, so that the light emitting diode is turned on with the same light output as during normal operation. Power consumption can be reduced, so the lighting time of the secondary battery can be extended, and if the lighting time of the secondary battery is the same, the use of a secondary battery with a small battery capacity further reduces the cost. There is an effect that can be achieved. Furthermore, the control circuit sets the maximum value of the light output of the light emitting diode at the time of occurrence of an abnormality during energization to be equal to or higher than the light output of the light emitting diode at the normal time, so that the emergency lighting device can Attention can be made more easily to know the location of the emergency lighting device. Moreover, since the control circuit periodically changes the light output of the light emitting diode when an abnormality occurs, even if the maximum value of the light output is equal to or higher than the light output of the light emitting diode during normal operation. As a whole, it is possible to reduce the power consumption of the light emitting diode from the normal time, and it is possible to extend the lighting time when the secondary battery is turned on as a power source in the event of a power failure. Moreover, when the lighting time by a secondary battery is made comparable, there exists an effect that a further cost reduction can be aimed at by using a secondary battery with small battery capacity.

請求項２の発明によれば、自動火災報知機からの火災報知信号を受けて、制御回路が点灯回路の出力を制御し、発光ダイオードの光出力を周期的に変化させることによって、火災の発生を報知することができる。   According to the invention of claim 2, a fire is generated by receiving a fire notification signal from the automatic fire alarm, and the control circuit controls the output of the lighting circuit and periodically changes the light output of the light emitting diode. Can be notified.

請求項３の発明によれば、停電検知回路からの停電検知信号を受けて、制御回路が点灯回路の出力を制御し、発光ダイオードの光出力を周期的に変化させることによって、停電の発生を報知することができる。   According to the invention of claim 3, the occurrence of a power failure is generated by receiving a power failure detection signal from the power failure detection circuit and the control circuit controlling the output of the lighting circuit and periodically changing the light output of the light emitting diode. Can be notified.

以下に本発明の実施の形態を図面に基づいて説明する。本実施形態の非常用照明装置Ａは、公共の施設において、火災などの非常時に避難経路を表示するために使用されるものであり、本実施形態においては最終避難口の近くに設置されるものを例に説明を行う。この非常用照明装置Ａの回路ブロック図を図１に、分解斜視図を図２にそれぞれ示す。   Embodiments of the present invention will be described below with reference to the drawings. The emergency lighting device A of the present embodiment is used for displaying an evacuation route in an emergency such as a fire in a public facility, and is installed near the final evacuation exit in the present embodiment. An example will be described. A circuit block diagram of the emergency lighting device A is shown in FIG. 1, and an exploded perspective view is shown in FIG.

この非常用照明装置Ａは、図１に示すように複数個の発光ダイオードからなるＬＥＤブロック１と、ＬＥＤブロック１を点灯させる誘導灯点灯ブロック２と、停電時に誘導灯点灯ブロック２に電力を供給する二次電池３とを主要な構成として備えている。   As shown in FIG. 1, the emergency lighting device A supplies power to an LED block 1 composed of a plurality of light-emitting diodes, a guide light lighting block 2 for lighting the LED block 1, and a guide light lighting block 2 in the event of a power failure. The secondary battery 3 is provided as a main component.

誘導灯点灯ブロック２は、商用電源ＡＣからの電力供給を受けて二次電池３を充電するとともに、商用電源ＡＣの停電時に二次電池３に充電された電荷を放出させることによって後述の点灯回路５に電力を供給する充放電回路４と、通電時は商用電源ＡＣから電力供給を受けてＬＥＤブロック１に点灯電力を供給するとともに、停電時は二次電池３から電力供給を受けてＬＥＤブロック１に点灯電力を供給する点灯回路５と、商用電源ＡＣの電源電圧と所定の閾値との高低を比較することによって商用電源ＡＣの停電を検知すると停電検知信号を発生する停電検知回路６と、火災発生時に外部の自動火災報知機Ｂから火災報知信号が入力される火報信号入力回路７と、異常の発生を報知する異常発報信号（本実施形態では停電検知回路６から入力される停電検知信号、および、火報信号入力回路７を介して入力される火災報知信号からなり）が入力されていない通常時にはＬＥＤブロック１を一定の光出力で点灯させるように点灯回路５の出力を制御するとともに、異常発報信号が入力されるとＬＥＤブロック１の光出力を周期的に変化させるように点灯回路５の出力を制御する制御回路８とを備えている。   The guide lamp lighting block 2 receives power supplied from the commercial power supply AC to charge the secondary battery 3, and discharges the charged electric charge to the secondary battery 3 when the commercial power supply AC is interrupted. The charging / discharging circuit 4 for supplying power to the power supply 5 and the power supply from the commercial power supply AC when energized to supply the lighting power to the LED block 1 and the power supply from the secondary battery 3 during the power failure A lighting circuit 5 that supplies lighting power to 1, a power failure detection circuit 6 that generates a power failure detection signal when a power failure of the commercial power source AC is detected by comparing the power supply voltage of the commercial power source AC with a predetermined threshold value; A fire alarm signal input circuit 7 to which a fire alarm signal is input from an external automatic fire alarm B when a fire occurs, and an abnormal alarm signal to notify the occurrence of an abnormality (in this embodiment, from the power failure detection circuit 6) The lighting circuit 5 so that the LED block 1 is lit at a constant light output at the normal time when the power failure detection signal and the fire notification signal input via the fire signal input circuit 7 are not input. And a control circuit 8 for controlling the output of the lighting circuit 5 so as to periodically change the light output of the LED block 1 when an abnormal alarm signal is input.

また図２は非常用照明装置Ａの分解斜視図であり、前面側が開口した扁平な矩形箱状のボディ１１と、前面が略矩形状に形成されてボディ１１前面の開口部に被着されるパネルケース１２とで構成される器具本体の内部に、商用電源ＡＣの給電線（図示せず）が接続される端子台２１と、二次電池３と、誘導灯点灯ブロック２の回路が形成されたプリント配線板（図示せず）を内部に収めたケース１３とが納装されている。   FIG. 2 is an exploded perspective view of the emergency lighting device A, and is a flat rectangular box-shaped body 11 having an opening on the front side, and a front surface formed in a substantially rectangular shape, which is attached to the opening on the front side of the body 11. A terminal block 21 to which a power supply line (not shown) of a commercial power supply AC (not shown) is connected, a secondary battery 3, and a guide light lighting block 2 circuit are formed inside the appliance body constituted by the panel case 12. And a case 13 in which a printed wiring board (not shown) is housed.

ここで、パネルケース１２の裏側面の左右両側部には、略Ｌ字形であって先端が左右方向の外側にそれぞれ突出する各一対の係合爪１４が上下に突設されるとともに、ボディ１１の左右両側壁の内側面に各係合爪１４が係合する係合リブ１５が突設されている。而して、パネルケース１２の上下左右の向きを合わせて、パネルケース１２を前方からボディ１１の開口部に近付け、パネルケース１２の後面をボディ１１の開口部に当接させた状態でパネルケース１２を下方にスライド移動させると、係合爪１４が対応する係合リブ１５と係合することによって、パネルケース１２がボディ１１の前面に取着される。   Here, on the left and right side portions of the back side surface of the panel case 12, a pair of engaging claws 14 having a substantially L-shape and the tips projecting outward in the left-right direction are provided up and down, and the body 11 Engaging ribs 15 for engaging the engaging claws 14 are provided on the inner side surfaces of the left and right side walls. Thus, the panel case 12 is aligned in the vertical and horizontal directions, the panel case 12 is brought close to the opening of the body 11 from the front, and the rear surface of the panel case 12 is in contact with the opening of the body 11. When 12 is slid downward, the engagement claws 14 engage with the corresponding engagement ribs 15, so that the panel case 12 is attached to the front surface of the body 11.

ボディ１１の上側壁および後壁にはそれぞれボディ１１を施工面に取り付けるための取付ねじ（図示せず）を挿通する挿通孔１１ａ，１１ｂが穿設されており、挿通孔１１ａ又は挿通孔１１ｂに挿通された取付ねじを天井材又は壁材に螺入することによってボディ１１が施工面（天井面又は壁面）に固定されるようになっている。なおボディ１１の上側壁および後壁にはノックアウト部１１ｃが設けられ、ノックアウト部１１ｃを孔開け加工して形成された電線挿通孔に、天井材又は壁材の裏面側に予め先行配線された商用電源ＡＣの給電線を挿通させることで、給電線が器具本体の内部に導入され、器具本体内部に収納された端子台２１に接続することができる。   Insertion holes 11a and 11b through which attachment screws (not shown) for attaching the body 11 to the construction surface are inserted in the upper side wall and the rear wall of the body 11, respectively, and are inserted into the insertion hole 11a or the insertion hole 11b. The body 11 is fixed to the construction surface (ceiling surface or wall surface) by screwing the inserted mounting screw into the ceiling material or wall material. In addition, the upper side wall and the rear wall of the body 11 are provided with knockout portions 11c, and a commercial wire previously wired in advance on the back side of the ceiling material or wall material in a wire insertion hole formed by drilling the knockout portion 11c. By inserting the power supply line of the power supply AC, the power supply line is introduced into the interior of the instrument body and can be connected to the terminal block 21 housed inside the instrument body.

また、パネルケース１２の上側縁には、パネルケース１２の下側部位よりも前方への突出量が大きい張出部１６が一体に突出形成されており、張出部１６の下側面にはＬＥＤブロック１を構成する複数個の発光ダイオード１ａがパネルケース１２の上側辺に沿って一列に配列されている。パネルケース１２の裏面からは先端にコネクタ１７が結線された電線１８が導出されており、このコネクタ１７をケース１３に設けたコネクタ（図示せず）に接続することによって、パネルケース１２に配設された複数個の発光ダイオード１ａが誘導灯点灯ブロック２に電気的に接続される。   In addition, an overhanging portion 16 is integrally formed on the upper edge of the panel case 12 so as to protrude forward from the lower portion of the panel case 12. A plurality of light emitting diodes 1 a constituting the block 1 are arranged in a line along the upper side of the panel case 12. An electric wire 18 having a connector 17 connected to the tip is led out from the back surface of the panel case 12, and the connector 17 is disposed in the panel case 12 by connecting to a connector (not shown) provided in the case 13. The plurality of light emitting diodes 1 a are electrically connected to the guide lamp lighting block 2.

また、パネルケース１２の前面には導光板１９と表示パネル２０とが前後方向に重ねた状態（表示パネル２０が前面側）で取り付けられる。導光板１９および表示パネル２０は、平面形状が略同じ矩形板状であって、上下方向および左右方向の各寸法が略同じ寸法に形成されており、導光板１９および表示パネル２０の上側面を張出部１６の下面に当接させた状態でパネルケース１２に取り付けられている。なお取付状態においては導光板１９の上側面が張出部１６の下面に配列された発光ダイオード１ａに対向配置されている。   Further, the light guide plate 19 and the display panel 20 are attached to the front surface of the panel case 12 in a state where the light guide plate 19 and the display panel 20 overlap in the front-rear direction (the display panel 20 is on the front side). The light guide plate 19 and the display panel 20 are rectangular plates having substantially the same planar shape, and the vertical and horizontal dimensions are substantially the same. The panel case 12 is attached in contact with the lower surface of the overhanging portion 16. In the attached state, the upper side surface of the light guide plate 19 is disposed opposite to the light emitting diodes 1 a arranged on the lower surface of the projecting portion 16.

表示パネル２０は透光性材料（例えばアクリル樹脂）により矩形板状に形成され、前面には避難方向を示す図案が例えば白色と緑色の２色で表示されている。一方、導光板１９は透明なアクリル樹脂により矩形板状に形成され、表示パネル２０の背面に重ねて配置されている。ここで、導光板１９は、上側縁に沿って対向配置された複数個の発光ダイオード１ａからの光を導光板１９内での全反射によって導光板１９の下側縁に導きながら、導光板１９の後面に設けた光拡散部（図示せず）に入射させ、光拡散部で拡散した光のうち、前方に向かう光を前面から出射させて表示パネル２０に入射させるものであり、表示パネル２０の前面（表示面）全体に均一な光を照射するようになっている。   The display panel 20 is formed in a rectangular plate shape with a translucent material (for example, acrylic resin), and a design indicating the evacuation direction is displayed on the front surface in, for example, two colors of white and green. On the other hand, the light guide plate 19 is formed in a rectangular plate shape with a transparent acrylic resin, and is disposed on the back surface of the display panel 20. Here, the light guide plate 19 guides the light from the plurality of light emitting diodes 1a opposed to each other along the upper edge to the lower edge of the light guide plate 19 by total reflection in the light guide plate 19. Of the light diffused by the light diffusing unit (not shown) provided on the rear surface of the light diffusing light, the light traveling forward is emitted from the front surface and incident on the display panel 20. Uniform light is irradiated on the entire front surface (display surface).

次に本実施形態の非常用照明装置Ａの動作を説明する。制御回路８は、停電検知回路６からの停電検知信号や火報信号入力回路７からの火災報知信号が何れも入力されていない通常時には、ＬＥＤブロック１を一定の光出力で点灯させるように点灯回路５の出力を制御しており、各発光ダイオード１ａの発光が導光板１９により導光されて、表示パネル２０が略一定の表示面輝度で発光する。   Next, operation | movement of the emergency illuminating device A of this embodiment is demonstrated. The control circuit 8 is lit so that the LED block 1 is lit at a constant light output during normal times when neither a power failure detection signal from the power failure detection circuit 6 nor a fire alarm signal from the fire alarm signal input circuit 7 is input. The output of the circuit 5 is controlled, the light emission of each light emitting diode 1a is guided by the light guide plate 19, and the display panel 20 emits light with a substantially constant display surface luminance.

一方、制御回路８は、停電検知回路６から停電検知信号が入力されるか、或いは、火報信号入力回路７を介して火災報知信号が入力されると、ＬＥＤブロック１の光出力を周期的に変化させるように点灯回路５の出力を制御する。   On the other hand, when the power failure detection signal is input from the power failure detection circuit 6 or the fire notification signal is input through the fire alarm signal input circuit 7, the control circuit 8 periodically changes the light output of the LED block 1. The output of the lighting circuit 5 is controlled so as to change to

図３（ａ）は火災報知信号が入力される時刻ｔ１の前後における表示パネル２０の表示面輝度の変化パターンを示しており、停電や火災などの異常が発生していない通常時（時刻ｔ１以前）は、制御回路８が、ＬＥＤブロック１の光出力を略一定に制御し、表示パネル２０を略一定の表示面輝度Ｌ１で発光させる。一方、火報信号入力回路７を介して制御回路８に火災報知信号が入力された異常時（時刻ｔ１以後）は、制御回路８が、ＬＥＤブロック１の光出力を相対的に高い輝度とする明期間と、相対的に低い輝度とする暗期間を所定の周期で交互に繰り返すように点灯回路５の出力を制御することで、表示パネル２０の表示面輝度がＬ１の明期間とＬ２の暗期間（Ｌ１＞Ｌ２）を周期的に繰り返させており、表示パネル２０の表示面を明滅させることによって人の目を引きつけやすくでき（誘目性が向上し）、火災発生時で煙が充満している状態でも非常用照明装置Ａの位置（すなわち最終避難口の位置）をより容易に知らしめることができる。   FIG. 3A shows a change pattern of the display surface luminance of the display panel 20 before and after time t1 when the fire notification signal is input, and normal time (before time t1) when no abnormality such as power failure or fire has occurred. ), The control circuit 8 controls the light output of the LED block 1 to be substantially constant, and causes the display panel 20 to emit light at a substantially constant display surface luminance L1. On the other hand, at the time of abnormality (after time t1) when the fire alarm signal is input to the control circuit 8 via the fire alarm signal input circuit 7, the control circuit 8 sets the light output of the LED block 1 to a relatively high luminance. By controlling the output of the lighting circuit 5 so that the light period and the dark period with relatively low luminance are alternately repeated at a predetermined cycle, the display surface brightness of the display panel 20 is L1 and the dark period of L2. Period (L1> L2) is repeated periodically, and the display surface of the display panel 20 can be blinked to make it easier to attract people's eyes (improves attractiveness). The position of the emergency lighting device A (that is, the position of the final evacuation exit) can be more easily known even when the emergency lighting apparatus A is present.

また図３（ｂ）は火災報知信号が入力される時刻ｔ２の前後、および、停電検知回路６が停電を検知する時刻ｔ３の前後における表示パネル２０の表示面輝度の変化パターンを示しており、停電や火災などの異常が発生していない通常時（時刻ｔ２以前）は、制御回路８が、ＬＥＤブロック１の光出力を略一定に制御し、表示パネル２０を略一定の発光面輝度Ｌ１で点灯させている。一方、火報信号入力回路７を介して制御回路８に火災報知信号が入力された後は（時刻ｔ２〜時刻ｔ３）、制御回路８が、ＬＥＤブロック１の光出力を相対的に高い輝度とする明期間と、相対的に低い輝度とする暗期間を所定の周期で交互に繰り返すように点灯回路５の出力を制御することによって、表示パネル２０の表示面輝度がＬ１の明期間とＬ２の暗期間（Ｌ１＞Ｌ２）を周期的に繰り返させており、表示パネル２０の表示面を明滅させることによって人の目を引きつけやすくでき（誘目性が向上し）、火災発生時で煙が充満している状態でも最終避難口の位置をより容易に知らしめることができる。   FIG. 3B shows a change pattern of the display surface luminance of the display panel 20 before and after time t2 when the fire alarm signal is input and before and after time t3 when the power failure detection circuit 6 detects a power failure. In a normal time (before time t2) when no abnormality such as a power failure or a fire has occurred, the control circuit 8 controls the light output of the LED block 1 to be substantially constant, and the display panel 20 has a substantially constant light emitting surface luminance L1. Lights up. On the other hand, after the fire alarm signal is input to the control circuit 8 via the fire alarm signal input circuit 7 (time t2 to time t3), the control circuit 8 increases the light output of the LED block 1 with a relatively high luminance. By controlling the output of the lighting circuit 5 so as to alternately repeat the light period and the dark period with relatively low luminance at a predetermined cycle, the display surface luminance of the display panel 20 is L1 and L2. The dark period (L1> L2) is repeated periodically, and the display surface of the display panel 20 blinks to make it easier to attract people's eyes (improving the attractiveness), and the fire is filled with smoke. The position of the final evacuation exit can be more easily known even in the state where

また火災発生後に停電が発生した場合、時刻ｔ３において停電検知回路６が停電を検知して、停電検知信号が制御回路８に入力されると、制御回路８は、ＬＥＤブロック１の光出力を通常時よりも低い所定の輝度とする明期間と、相対的により低い輝度とする暗期間を所定の周期で交互に繰り返すように点灯回路５の出力を制御することで、表示パネル２０の表示面輝度がＬ３の期間とＬ２の期間（Ｌ２＜Ｌ３＜Ｌ１）を周期的に繰り返させて、表示パネル２０の表示面を明滅させており、この場合にも人の目を引きつけやすくなり（誘目性が向上し）、火災発生時で煙が充満している状態でも最終避難口に位置をより容易に知らしめることができる。   When a power failure occurs after a fire occurs, the power failure detection circuit 6 detects a power failure at time t3, and when the power failure detection signal is input to the control circuit 8, the control circuit 8 normally outputs the light output of the LED block 1 The display surface brightness of the display panel 20 is controlled by controlling the output of the lighting circuit 5 so that a light period having a predetermined brightness lower than the time and a dark period having a relatively lower brightness are alternately repeated at a predetermined cycle. The period of L3 and the period of L2 (L2 <L3 <L1) are periodically repeated to cause the display surface of the display panel 20 to flicker. Improved), and the location of the final evacuation exit can be more easily known even when the fire is full of smoke.

以上説明したように本実施形態の非常用照明装置Ａでは、火災や停電などの異常が発生していない場合、制御回路８が、ＬＥＤブロック１を一定の光出力で点灯させるように、点灯回路５の出力を制御するとともに、火災や停電などの異常が発生した場合には、制御回路８が、ＬＥＤブロック１を所定の周期で明滅させるように点灯回路５の出力を制御しており、異常発生時には表示パネル２０の表示面を周期的に明滅させているので、表示パネル２０の表示面の誘目性を向上させ、最終避難口に位置をより容易に知らしめることができる。ここにおいて、本実施形態では表示パネル２０に光を照射する光源として、入力電流に応じて光出力を容易に変化させることができる発光ダイオード１ａを用いているので、光出力を周期的に変化させるための光源を別途用意する必要が無く、非常用照明装置Ａのコストダウンを図ることができる。   As described above, in the emergency lighting device A of the present embodiment, when an abnormality such as a fire or a power failure does not occur, the lighting circuit is configured so that the control circuit 8 lights the LED block 1 with a constant light output. 5 and the control circuit 8 controls the output of the lighting circuit 5 so that the LED block 1 blinks in a predetermined cycle when an abnormality such as a fire or a power failure occurs. Since the display surface of the display panel 20 is periodically blinked when it occurs, the attractiveness of the display surface of the display panel 20 can be improved, and the position can be more easily known to the final evacuation exit. Here, in this embodiment, since the light emitting diode 1a that can easily change the light output according to the input current is used as the light source for irradiating the display panel 20 with light, the light output is periodically changed. Therefore, it is not necessary to prepare a separate light source, and the cost of the emergency lighting device A can be reduced.

また火災発生時（通電中）にＬＥＤブロック１を明滅させる際に、制御回路８は、明期間におけるＬＥＤブロック１の光出力を通常時の光出力と同等の光出力に制御しているが、この場合でもＬＥＤブロック１の光出力を周期的に変化させ、通常時の光出力よりも暗い光出力で点灯する暗期間を設けているので、全体としてＬＥＤブロック１の消費電力を通常時より低減することができる。なお本実施形態では火災発生時（通電中）にＬＥＤブロック１を明滅させる際に、明期間におけるＬＥＤブロック１の光出力を通常時の光出力と同程度に制御しているが、明期間における光出力を通常時の光出力以上としても良く、光出力のピークを通常時より明るくしながらも、全体としてはＬＥＤブロック１の電力消費量を低減することができる。   In addition, when the LED block 1 is blinked at the time of fire occurrence (during energization), the control circuit 8 controls the light output of the LED block 1 during the light period to the light output equivalent to the light output at the normal time. Even in this case, the light output of the LED block 1 is periodically changed to provide a dark period during which the light output is darker than the normal light output. can do. In this embodiment, when the LED block 1 is blinked in the event of a fire (during energization), the light output of the LED block 1 in the light period is controlled to the same level as the light output in the normal period. The light output may be higher than the normal light output, and the power consumption of the LED block 1 can be reduced as a whole while the light output peak is brighter than normal.

また本実施形態の非常用照明装置Ａでは、停電時にＬＥＤブロック１を明滅させる際に、明期間におけるＬＥＤブロック１の光出力を通常時の光出力よりも低下させている。商用電源ＡＣの停電時には、充放電回路４が二次電池３に充電された電荷を放電させることによって、二次電池３を電源として点灯回路５がＬＥＤブロック１に点灯電力を供給するのであるが、停電時には通常時に比べて明期間の発光面輝度を低下させているので、ＬＥＤブロック１を通常時と同等の光出力で点灯させる場合に比べて消費電力を低減することができる。したがって、二次電池３による点灯時間を延ばすことができ、また二次電池３による点灯時間を同程度とした場合は電池容量が小さい二次電池３を使用することができるから、さらなるコストダウンを図ることができる。なお停電時にＬＥＤブロック１を明滅させる際のＬＥＤブロック１の光出力の最大値を、通常時におけるＬＥＤブロック１の光出力と同等若しくはそれ以上に設定しても良く、その場合でもＬＥＤブロック１の光出力を周期的に変化させることで、全体としてＬＥＤブロック１の消費電力を低減することができる。   Further, in the emergency lighting device A of the present embodiment, when the LED block 1 is blinked at the time of a power failure, the light output of the LED block 1 in the light period is lowered than the light output in the normal time. At the time of a power failure of the commercial power supply AC, the charging / discharging circuit 4 discharges the electric charge charged in the secondary battery 3 so that the lighting circuit 5 supplies the lighting power to the LED block 1 using the secondary battery 3 as a power source. In the event of a power failure, the light emitting surface brightness during the light period is reduced compared to the normal time, so that the power consumption can be reduced as compared with the case where the LED block 1 is lit with the same light output as in the normal time. Therefore, the lighting time by the secondary battery 3 can be extended, and when the lighting time by the secondary battery 3 is made comparable, the secondary battery 3 having a small battery capacity can be used, so that the cost can be further reduced. Can be planned. The maximum value of the light output of the LED block 1 when the LED block 1 is blinked at the time of a power failure may be set to be equal to or higher than the light output of the LED block 1 at the normal time. By periodically changing the light output, the power consumption of the LED block 1 can be reduced as a whole.

また制御回路８では、火災時と停電時とでＬＥＤブロック１を明滅させる際の光出力の変化パターン（すなわち明期間の輝度）を異ならせているので、変化パターンの違いから異常の内容（火災か停電かの別）を判別することができる。ここにおいて、本実施形態では、火災時と停電時とでＬＥＤブロック１を明滅させる際の明期間の輝度を異ならせているが、明滅の周期を異ならせるようにしても良い。   The control circuit 8 changes the light output change pattern (that is, the brightness during the light period) when the LED block 1 blinks between the fire and the power failure. Or power failure). Here, in this embodiment, the brightness of the light period when the LED block 1 is blinked is different between the time of a fire and the time of a power failure, but the blinking period may be different.

また本実施形態では火災や停電などの異常が発生した際に、ＬＥＤブロック１を相対的に明るい輝度で点灯させる明期間と、相対的に暗い輝度で点灯する暗期間とを所定の周期で繰り返すことによってＬＥＤブロック１を明滅させているが、ＬＥＤブロック１を所定の輝度で点灯させる点灯期間とＬＥＤブロック１を消灯させる消灯期間とを所定の周期で交互に繰り返すことで、ＬＥＤブロック１を点滅させるようにしても良い。   Further, in this embodiment, when an abnormality such as a fire or a power failure occurs, a bright period in which the LED block 1 is turned on with relatively bright brightness and a dark period in which the LED block 1 is turned on with relatively dark brightness are repeated at a predetermined cycle. The LED block 1 is blinked by this, but the LED block 1 blinks by alternately repeating a lighting period in which the LED block 1 is turned on with a predetermined luminance and a light-out period in which the LED block 1 is turned off in a predetermined cycle. You may make it let it.

本実施形態の非常用照明装置の概略構成を示すブロック図である。It is a block diagram which shows schematic structure of the emergency illuminating device of this embodiment. 同上の分解斜視図である。It is an exploded perspective view same as the above. （ａ）（ｂ）は同上の動作を説明する説明図である。(A) (b) is explanatory drawing explaining operation | movement same as the above. 従来の非常用照明装置の概略構成を示すブロック図である。It is a block diagram which shows schematic structure of the conventional emergency lighting apparatus.

符号の説明Explanation of symbols

Ａ 非常用照明装置
１ ＬＥＤブロック
１ａ 発光ダイオード
２ 誘導灯点灯ブロック
３ 二次電池
４ 充放電回路（充電回路）
５ 点灯回路
８ 制御回路
１９ 導光板
２０ 表示パネル
ＡＣ 商用電源 A Emergency lighting device 1 LED block 1a Light emitting diode 2 Guide lamp lighting block 3 Secondary battery 4 Charge / discharge circuit (charge circuit)
5 lighting circuit 8 control circuit 19 light guide plate 20 display panel AC commercial power supply

Claims (3)

表示パネルの背面に配置された導光板と、
前記導光板の端部に配置された発光ダイオードと、
商用電源の供給を受けて二次電池を充電する充電回路と、
通電時は商用電源から電力供給を受けて前記発光ダイオードに点灯電力を供給し、停電時は前記二次電池から電力供給を受けて前記発光ダイオードに点灯電力を供給する点灯回路と、
異常の発生を報知する異常発報信号が入力されていない通常時には前記発光ダイオードを一定の光出力で点灯させるように前記点灯回路の出力を制御し、前記異常発報信号が入力されると前記発光ダイオードの光出力を周期的に変化させるように前記点灯回路の出力を制御する制御回路とを備え、
通電中の異常発生時には、通常時の光出力と同等以上の光出力とする明期間と、通常時の光出力よりも暗い光出力とする暗期間が交互に繰り返すように前記制御回路が前記発光ダイオードの光出力を制御し、停電時には、通常時の光出力よりも暗い所定の光出力とする明期間と、明期間よりも光出力がより暗い暗期間が交互に繰り返すように前記制御回路が前記発光ダイオードの光出力を制御しており、
前記制御回路は、停電時における前記発光ダイオードの光出力の最大値を、通常時における前記発光ダイオードの光出力よりも低下させ、且つ、通電中の異常発生時における前記発光ダイオードの光出力の最大値を、通常時における前記発光ダイオードの光出力と同等か若しくはそれ以上とすることを特徴とする非常用照明装置。 A light guide plate disposed on the back of the display panel;
A light emitting diode disposed at an end of the light guide plate;
A charging circuit for charging a secondary battery by receiving a commercial power supply;
A lighting circuit for supplying lighting power to the light emitting diode by receiving power supply from a commercial power source when energized, and for supplying power to the light emitting diode by receiving power supply from the secondary battery at the time of a power failure;
When an abnormal alarm signal for notifying the occurrence of an abnormality is not input, the output of the lighting circuit is controlled so that the light emitting diode is lit at a constant light output at a normal time, and when the abnormal alarm signal is input, A control circuit for controlling the output of the lighting circuit so as to periodically change the light output of the light emitting diode;
When an abnormality occurs during energization, the control circuit emits light so that a light period in which the light output is equal to or higher than the normal light output and a dark period in which the light output is darker than the normal light output are alternately repeated. The control circuit controls the light output of the diode so that, in the event of a power failure, a light period in which the light output is darker than the normal light output and a dark period in which the light output is darker than the light period are alternately repeated. Controlling the light output of the light emitting diode,
The control circuit reduces the maximum light output of the light emitting diode at the time of a power failure from the light output of the light emitting diode at a normal time, and the maximum light output of the light emitting diode at the occurrence of an abnormality during energization. An emergency lighting device characterized in that the value is equal to or greater than the light output of the light emitting diode in a normal state. 前記異常発報信号は、外部の自動火災報知機から入力される火災報知信号であることを特徴とする請求項１記載の非常用照明装置。   2. The emergency lighting device according to claim 1, wherein the abnormal alarm signal is a fire alarm signal input from an external automatic fire alarm. 商用電源の停電を検知すると停電検知信号を発生する停電検知回路を備え、
前記異常発報信号が、前記停電検知回路から前記制御回路に入力される停電検知信号であることを特徴とする請求項１記載の非常用照明装置。 Equipped with a power failure detection circuit that generates a power failure detection signal when a commercial power failure is detected,
The emergency lighting device according to claim 1, wherein the abnormal alarm signal is a power failure detection signal input from the power failure detection circuit to the control circuit.
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