JP2016149322A - Marker lamp system - Google Patents

Marker lamp system Download PDF

Info

Publication number
JP2016149322A
JP2016149322A JP2015026833A JP2015026833A JP2016149322A JP 2016149322 A JP2016149322 A JP 2016149322A JP 2015026833 A JP2015026833 A JP 2015026833A JP 2015026833 A JP2015026833 A JP 2015026833A JP 2016149322 A JP2016149322 A JP 2016149322A
Authority
JP
Japan
Prior art keywords
circuit
lighting
voltage
light emitting
emitting element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2015026833A
Other languages
Japanese (ja)
Other versions
JP6369690B2 (en
Inventor
新野　真吾
Shingo Shinno
真吾 新野
石田　康史
Yasushi Ishida
康史 石田
加藤　俊也
Toshiya Kato
俊也 加藤
智嗣 田部井
Tomotsugu Tabei
智嗣 田部井
俊也 鈴木
Toshiya Suzuki
俊也 鈴木
聖史 関根
Seiji Sekine
聖史 関根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Lighting and Technology Corp
Original Assignee
Toshiba Lighting and Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Lighting and Technology Corp filed Critical Toshiba Lighting and Technology Corp
Priority to JP2015026833A priority Critical patent/JP6369690B2/en
Publication of JP2016149322A publication Critical patent/JP2016149322A/en
Application granted granted Critical
Publication of JP6369690B2 publication Critical patent/JP6369690B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a marker lamp system that notifies a short-circuit failure of a light emission element to a constant current power supply device.SOLUTION: A lighting control circuit 15 includes a lighting circuit 31, a load adjusting circuit 25, a controller 35 and a main voltage detection circuit 30. The lighting circuit 31 turns on a light emission element 16. The load adjusting circuit 25 performs opening/closing between a high voltage side and a low voltage side at the output side of an isolation transformer 12. The controller 35 controls the opening/closing of the load adjusting circuit 25. The lighting control circuit 15 controls the lighting state of the light emission element 16 by the lighting circuit 31, and makes the controller 35 control the load adjusting circuit 25 to open when the output voltage detected by the main voltage detection circuit 30 decreases to a predetermined value or less. A releasing device 14 is operated upon an input voltage from the lighting control circuit 15, and physically releases the connection between the isolation transformer 12 and the lighting control circuit 15 when the input voltage increases to a predetermined voltage or more.SELECTED DRAWING: Figure 1

Description

本発明の実施形態は、発光素子と、発光素子の点灯状態を制御する点灯制御回路とを有する標識灯を備えた標識灯システムに関する。   Embodiments described herein relate generally to a marker lamp system including a marker lamp having a light emitting element and a lighting control circuit that controls a lighting state of the light emitting element.

従来、例えば空港の滑走路や誘導路などに配置される標識灯として電球式の標識灯を用い、これら標識灯と、既存の定電流電源装置とにより構成される標識灯システムとして、日常点検およびメンテナンスにおいて、不点灯(異常点灯)の標識灯の発見を容易にするため、定電流電源装置で標識灯の点灯状態を監視しているものがある。この監視システムは、電球式標識灯の不点灯要因である電球フィラメントの断線を利用している。すなわち、標識灯入力には定電流電源装置に接続された可飽和装置であるゴム被覆絶縁トランスがあり、電球式標識灯の場合、このゴム被覆絶縁トランスの二次側に接続されるのは電球フィラメントであるため、フィラメント断線での不点灯によりゴム被覆絶縁トランスの二次側が開放状態となることから、この断線によりゴム被覆絶縁トランスの二次側が開放されるときに、ゴム被覆絶縁トランスが飽和するまで高電圧が生じ、この高電圧によって生じる一次側の電圧波形歪を定電流電源装置に設けられた検出回路により検出することで、標識灯の不点灯(負荷断芯)を監視している。   Conventionally, for example, a light bulb-type marker lamp is used as a marker lamp disposed on a runway or taxiway of an airport, and as a marker lamp system constituted by these marker lamps and an existing constant current power supply device, daily inspection and In maintenance, in order to facilitate the discovery of a non-lighted (abnormally lit) marker lamp, there is a constant current power supply device that monitors the lit state of the marker lamp. This monitoring system uses a breakage of a light bulb filament, which is a cause of non-lighting of a light bulb type indicator light. That is, the marker lamp input has a rubber-covered insulated transformer that is a saturable device connected to a constant current power supply device. In the case of a bulb-type marker lamp, the secondary side of the rubber-coated insulated transformer is connected to a light bulb. Since the filament is a filament, the secondary side of the rubber-covered insulating transformer is opened due to non-lighting due to filament disconnection, so the rubber-covered insulating transformer is saturated when the secondary side of the rubber-covered insulating transformer is opened due to this disconnection. A high voltage is generated until the signal voltage is distorted, and the primary side voltage waveform distortion caused by the high voltage is detected by a detection circuit provided in the constant current power supply device, thereby monitoring the unlit (load breakage) of the indicator lamp. .

近年、標識灯は、省エネルギー化などの観点から電球式からＬＥＤ式へと置換されてきている。標識灯の電球式からＬＥＤ式に置換するにあたり、多くの場合において更新の必要がない配線およびゴム被覆絶縁トランスなどのインフラや定電流電源装置は既存のまま運用される。このため、標識灯の負荷断芯監視システムも既存のまま使用できることが望まれる。ＬＥＤ式標識灯であっても、電球式標識灯と同様に電流電源装置からゴム被覆絶縁トランスを介し接続する構成となるため、既存インフラでの使用は問題ないものの、標識灯入力に点灯制御回路が必要となり、単にＬＥＤの不点灯では電球式標識灯のフィラメント断線のように入力開放には至らない。   In recent years, a marker lamp has been replaced from a light bulb type to an LED type from the viewpoint of energy saving. In replacing the light bulb type of the marker lamp with the LED type, in many cases, infrastructure and constant current power supply devices such as wiring and rubber-covered insulating transformer that do not need to be updated are operated as they are. For this reason, it is desirable that the load breakage monitoring system of the marker lamp can be used as it is. Even if it is an LED-type marker lamp, it is configured to be connected from the current power supply device via a rubber-covered insulated transformer in the same way as a bulb-type marker lamp. When the LED is simply not lit, the input is not released like the filament breakage of a bulb-type marker lamp.

そこで、例えば点灯制御回路とＬＥＤ負荷となる灯器とが別筐体であって、一つの点灯制御回路に対して複数のＬＥＤ灯器を直列に接続する標識灯システムでは、点灯制御回路から別信号線を用いてシステム上位に対して異常を伝達する構成がある。しかしながら、このシステムの場合、１つの点灯制御回路に対して複数のＬＥＤ灯器を直列に接続できるようにしており、設置の便宜上、その数に幅が持たされているとともに、点灯制御回路とＬＥＤ灯器との距離が数百メートルにおよび、ケーブルによる電圧低下が生じるため、点灯制御回路の出力電圧が設置環境によって変動することから、点灯制御回路側でＬＥＤ灯器の接続台数を把握することが容易でなく、仮にＬＥＤが短絡故障した場合、点灯制御回路側から見てＬＥＤが故障しているのか、ＬＥＤ灯器が接続されていないのかを判別することができない。したがって、ＬＥＤの短絡故障を点灯制御回路の自己監視によって検出することができない。   Therefore, for example, in a marker lamp system in which a lighting control circuit and a lamp device serving as an LED load are separate cases and a plurality of LED lighting devices are connected in series to one lighting control circuit, the lighting control circuit is separated from the lighting control circuit. There is a configuration in which an abnormality is transmitted to a host system using a signal line. However, in the case of this system, a plurality of LED lamps can be connected in series to one lighting control circuit, and for the convenience of installation, the number is wide, and the lighting control circuit and LED Since the output voltage of the lighting control circuit varies depending on the installation environment because the distance to the lamp is several hundred meters and the voltage drops due to the cable, grasp the number of LED lamps connected on the lighting control circuit side. However, if the LED is short-circuited, it is impossible to determine whether the LED is broken or the LED lamp is not connected when viewed from the lighting control circuit side. Therefore, a short circuit failure of the LED cannot be detected by self-monitoring of the lighting control circuit.

特開２０１２−２０４２０４号公報JP 2012-204204 A

本発明が解決しようとする課題は、発光素子の短絡故障を定電流電源装置に報知する標識灯システムを提供することである。   The problem to be solved by the present invention is to provide a marker lamp system that notifies a constant current power supply device of a short circuit failure of a light emitting element.

実施形態の標識灯システムは、定電流電源装置と、可飽和装置と、標識灯とを有する。定電流電源装置は、電力波形を監視することで発光素子が異常点灯状態であるかどうかを検出する検出回路を備える。可飽和装置は、定電流電源装置の出力端間に少なくとも１つ直列に接続される。標識灯は、直列に接続される少なくとも１つの発光素子と、点灯制御回路と、開放装置とを有する。点灯制御回路は、点灯回路と、負荷調整回路と、制御部と、電圧検出回路とを有する。点灯回路は、発光素子を点灯させる。負荷調整回路は、可飽和装置の出力側の高圧側と低圧側との間を開閉する。制御部は、負荷調整回路の開閉を制御する。電圧検出回路は、出力電圧を検出する。そして、点灯制御回路は、点灯回路により発光素子の点灯状態を制御するとともに、電圧検出回路により検出した出力電圧が所定値以下に低下したときに制御部により負荷調整回路を開放させる。開放装置は、点灯制御回路の入力電圧により動作され、この入力電圧が所定電圧以上となったときに可飽和装置と点灯制御回路との接続を開放する。   The marker lamp system of the embodiment includes a constant current power supply device, a saturable device, and a marker lamp. The constant current power supply device includes a detection circuit that detects whether or not the light emitting element is in an abnormal lighting state by monitoring a power waveform. At least one saturable device is connected in series between the output terminals of the constant current power supply device. The marker lamp has at least one light emitting element connected in series, a lighting control circuit, and an opening device. The lighting control circuit includes a lighting circuit, a load adjustment circuit, a control unit, and a voltage detection circuit. The lighting circuit lights the light emitting element. The load adjustment circuit opens and closes between the high voltage side and the low voltage side on the output side of the saturable device. The control unit controls opening and closing of the load adjustment circuit. The voltage detection circuit detects the output voltage. The lighting control circuit controls the lighting state of the light emitting element by the lighting circuit, and causes the control unit to open the load adjustment circuit when the output voltage detected by the voltage detection circuit falls below a predetermined value. The opening device is operated by the input voltage of the lighting control circuit, and opens the connection between the saturable device and the lighting control circuit when the input voltage becomes a predetermined voltage or higher.

本発明によれば、点灯制御回路の出力電圧が所定値以下に低下したときには、発光素子の短絡故障と判断して制御部が負荷調整回路を開放することで上昇した点灯制御回路の入力電圧により開放装置が動作して可飽和装置と点灯制御回路との接続を開放し、定電流電源装置の検出回路により検出する電力波形に歪を発生させることができるので、発光素子の短絡故障を定電流電源装置に報知することが期待できる。   According to the present invention, when the output voltage of the lighting control circuit decreases to a predetermined value or less, it is determined that the light emitting element is short-circuited, and the control unit opens the load adjustment circuit to increase the input voltage of the lighting control circuit. Since the open device operates to open the connection between the saturable device and the lighting control circuit, distortion can be generated in the power waveform detected by the detection circuit of the constant current power supply device. It can be expected to notify the power supply device.

一実施形態の標識灯を備えた標識灯システムを示す回路図である。It is a circuit diagram showing a marker lamp system provided with a marker lamp of one embodiment.

以下、一実施形態の構成を図１を参照して説明する。   The configuration of one embodiment will be described below with reference to FIG.

図１において、標識灯10は、交流の定電流電力を供給する定電流電源装置(ＣＣＲ)11から定電流電力を供給する給電ラインに一次側が直列に接続された、例えば可飽和装置としてのゴム被覆絶縁トランスなどの少なくとも１つの絶縁トランス12の二次側に接続されている。なお、図１には１つの絶縁トランス12のみを示し、他は省略している。そして、標識灯10は、これら定電流電源装置11および絶縁トランス12とともに、標識灯システムを構成している。   In FIG. 1, a marker lamp 10 has a primary side connected in series to a power supply line that supplies constant current power from a constant current power supply (CCR) 11 that supplies alternating constant current power. It is connected to the secondary side of at least one insulating transformer 12, such as a coated insulating transformer. In FIG. 1, only one insulating transformer 12 is shown, and the others are omitted. The indicator lamp 10 constitutes an indicator lamp system together with the constant current power supply device 11 and the insulating transformer 12.

そして、標識灯10は、絶縁トランス12の二次側に遮断器である開放装置14を介して入力端子が接続され、点灯制御回路15により、この入力端子に入力される定電流電力を所定の点灯電力に変換して発光素子16に供給する。また、この標識灯10は、発光素子16とともに、図示しない反射鏡および／またはレンズなどにより構成される光学系部、この光学系部からの光を外部へと透光するガラスなどの図示しない出射部、および、点灯制御回路15などが、図示しない筐体に一体的に内包されて構成される。   The indicator lamp 10 has an input terminal connected to the secondary side of the insulation transformer 12 via an open device 14 that is a circuit breaker. The lighting control circuit 15 applies a constant current power input to the input terminal to a predetermined value. It is converted into lighting power and supplied to the light emitting element 16. Further, the marker lamp 10 includes a light emitting element 16 and an optical system unit including a reflecting mirror and / or a lens (not shown), and an emission (not shown) such as glass that transmits light from the optical system unit to the outside. And the lighting control circuit 15 and the like are integrally included in a housing (not shown).

開放装置14は、ブレーカ(漏電ブレーカ)とも呼ばれ、点灯制御回路15の入力側に接続された駆動素子としての駆動コイル14aと、この駆動コイル14aに所定電圧V1以上の電圧が印加されることで物理的に引き離される接点部14bとを備えた常閉の機械式ラッチ(機械式スイッチ)である。この開放装置14は、例えば絶縁トランス12の二次側と標識灯10(点灯制御回路15)の入力端子の高圧側との間に挿入されている。この開放装置14は、標識灯システムの通電時および非通電時のそれぞれにおいて、接点部14bの開状態および閉状態がそれぞれ機械的に保持されるようになっている。   The opening device 14 is also called a breaker (earth leakage breaker), and a drive coil 14a as a drive element connected to the input side of the lighting control circuit 15 and a voltage equal to or higher than a predetermined voltage V1 are applied to the drive coil 14a. And a normally-closed mechanical latch (mechanical switch) having a contact portion 14b that is physically separated at the same time. The opening device 14 is inserted, for example, between the secondary side of the insulating transformer 12 and the high voltage side of the input terminal of the marker lamp 10 (lighting control circuit 15). The opening device 14 is configured to mechanically hold the open state and the closed state of the contact portion 14b when the marker lamp system is energized and de-energized.

点灯制御回路15は、発光素子16を点灯制御するもので、入力端子(開放装置14)に対して一次側が直列に接続される(第１および第２の)電流トランス(変流トランス)すなわちカレントトランス21，22の二次側に接続されている。すなわち、この点灯制御回路15は、開放装置14の後段、すなわち二次側に接続されている。これらカレントトランス21，22は、絶縁トランス12から入力される定電流電力の電流値を所定の電流値に変換する。また、カレントトランス21の二次側には、開放装置14を動作させるための駆動コイル14aが接続され、この駆動コイル14aの後段に、点灯制御回路15が接続されている。そして、点灯制御回路15は、カレントトランス21の二次側に、交流の定電流電力を整流する整流回路24、負荷調整回路25、保護回路26および平滑回路27などが接続されている。   The lighting control circuit 15 controls the lighting of the light emitting element 16, and the primary side is connected in series with the input terminal (opening device 14) (first and second) current transformer (current transformer), that is, current. It is connected to the secondary side of the transformers 21 and 22. That is, the lighting control circuit 15 is connected to the rear stage of the opening device 14, that is, the secondary side. These current transformers 21 and 22 convert the current value of constant current power input from the insulating transformer 12 into a predetermined current value. A drive coil 14a for operating the opening device 14 is connected to the secondary side of the current transformer 21, and a lighting control circuit 15 is connected to the subsequent stage of the drive coil 14a. The lighting control circuit 15 is connected to the secondary side of the current transformer 21, such as a rectifier circuit 24 that rectifies AC constant current power, a load adjustment circuit 25, a protection circuit 26, and a smoothing circuit 27.

負荷調整回路25は、電圧検出回路である主電圧検出回路30で検出される電圧などに基づいて、例えばＣＰＵ(マイコン)によって構成された制御部35によりフィードバック制御され、発光素子16に供給する電力の電圧を制御する。この負荷調整回路25は、絶縁トランス12の二次側であるカレントトランス21の二次側の高圧側と低圧側との間に接続されて電流の一部をバイパスさせるための例えば半導体スイッチであり、制御部35からバッファ回路36を介して供給された主電圧制御信号であるＨ／Ｌ信号によりスイッチングされて高圧側と低圧側とを短絡／開放することで、発光素子16への印加電圧が所定値を超えないように定電圧化している。   The load adjustment circuit 25 is feedback-controlled by a control unit 35 configured by, for example, a CPU (microcomputer) based on the voltage detected by the main voltage detection circuit 30 which is a voltage detection circuit, and is supplied to the light emitting element 16 To control the voltage. The load adjustment circuit 25 is, for example, a semiconductor switch that is connected between the high-voltage side and the low-voltage side of the secondary side of the current transformer 21 that is the secondary side of the isolation transformer 12 to bypass a part of the current. The high voltage side and the low voltage side are short-circuited / opened by being switched by the H / L signal which is the main voltage control signal supplied from the control unit 35 through the buffer circuit 36, so that the voltage applied to the light emitting element 16 is reduced. The voltage is constant so as not to exceed a predetermined value.

主電圧検出回路30は、点灯制御回路15(点灯回路31)の出力電圧である主電圧を検出し、この検出した主電圧(この主電圧に対応する値)を制御部35に入力し、制御部35は負荷調整回路25の出力電圧を、バッファ回路36を介して調整する。   The main voltage detection circuit 30 detects a main voltage that is an output voltage of the lighting control circuit 15 (lighting circuit 31), and inputs the detected main voltage (a value corresponding to the main voltage) to the control unit 35 for control. The unit 35 adjusts the output voltage of the load adjustment circuit 25 via the buffer circuit 36.

点灯回路31は、発光素子16を点灯させるものである。ここで、標識灯10の場合、色度規格が規定されており、ＬＥＤなどの発光素子16は、波高値が変わると色度が変化する特性を有するため、点灯回路31は、発光素子16の調光段階に応じて一般的にＰＷＭ(パルス幅変調)制御を行い、発光素子16の調光段階に拘らず、発光素子16への入力電流の波高値(ピーク値)は一定としている。すなわち、本実施形態において、この点灯回路31は、スイッチング素子を備え、このスイッチング素子が制御部35によってバッファ回路38を介して開閉されることで発光素子16の点灯時間のデューティ比を変え、発光素子16を所定の光度(光度範囲)で点灯させる。   The lighting circuit 31 lights the light emitting element 16. Here, in the case of the marker lamp 10, the chromaticity standard is defined, and the light emitting element 16 such as an LED has a characteristic that the chromaticity changes when the peak value changes. In general, PWM (pulse width modulation) control is performed according to the dimming stage, and the peak value (peak value) of the input current to the light emitting element 16 is constant regardless of the dimming stage of the light emitting element 16. In other words, in the present embodiment, the lighting circuit 31 includes a switching element, and the switching element is opened and closed by the control unit 35 via the buffer circuit 38, thereby changing the duty ratio of the lighting time of the light emitting element 16 to emit light. The element 16 is turned on at a predetermined luminous intensity (luminous intensity range).

保護回路26は、負荷調整回路25の開放による点灯制御回路15の入力電圧の上昇により動作して発光素子16および点灯回路31を入力電圧から切り離して保護するものである。この保護回路26は、負荷調整回路25と平滑回路27との間の接続を開閉する保護接点41と、この保護接点41の開閉を制御する開回路42および閉回路43と、保護接点41の二次側である平滑回路27の入力側の電圧(この電圧に対応する電圧)を検出する電圧検出回路44と、保持素子としての保持コンデンサ45とを備えている。そして、この保護回路26は、閉回路43が保護接点41の一次側電圧により動作されて保護接点41を閉じるとともに、電圧検出回路44により検出した保護接点41の二次側電圧である主電圧が開放装置14の駆動コイル14aが動作する所定電圧V1よりも低い所定電圧V2以上となったときに開回路42が動作されて保護接点41を開くようになっている。すなわち、この保護回路26は、点灯制御回路15の入力電圧が所定電圧V2以上となったときに保護動作を行う。また、保持コンデンサ45は、開回路42の動作電圧を平滑回路27とともに所定時間保持するものである。   The protection circuit 26 operates by increasing the input voltage of the lighting control circuit 15 due to the opening of the load adjustment circuit 25, and protects the light emitting element 16 and the lighting circuit 31 by separating them from the input voltage. The protection circuit 26 includes a protection contact 41 that opens and closes a connection between the load adjustment circuit 25 and the smoothing circuit 27, an open circuit 42 and a closed circuit 43 that control the opening and closing of the protection contact 41, and a protection contact 41. A voltage detection circuit 44 that detects a voltage (voltage corresponding to this voltage) on the input side of the smoothing circuit 27 that is the next side, and a holding capacitor 45 as a holding element are provided. The protective circuit 26 is configured such that the closed circuit 43 is operated by the primary side voltage of the protective contact 41 to close the protective contact 41, and the main voltage that is the secondary side voltage of the protective contact 41 detected by the voltage detection circuit 44 is The open circuit 42 is operated to open the protective contact 41 when the voltage V2 is lower than the predetermined voltage V1 at which the drive coil 14a of the opening device 14 operates. That is, the protection circuit 26 performs a protection operation when the input voltage of the lighting control circuit 15 becomes equal to or higher than the predetermined voltage V2. The holding capacitor 45 holds the operating voltage of the open circuit 42 together with the smoothing circuit 27 for a predetermined time.

平滑回路27は、整流回路24で整流された定電流電力を平滑する、例えば平滑コンデンサである。この平滑回路27には、主電圧から第１の制御電圧である１５Ｖの動作電圧を生成する(第１の)制御電源回路としての１５Ｖ電源回路47と、この１５Ｖ電源回路47から第２の制御電圧である５Ｖの動作電圧を生成する(第２の)制御電源回路としての５Ｖ電源回路48とが接続されているとともに、これら制御電圧(これら制御電圧に対応する電圧)を検出する制御電圧検出回路49が接続されている。１５Ｖ電源回路47からは、１５Ｖの動作電圧が供給され、５Ｖ電源回路48からは５Ｖの動作電圧(Vcc)が例えば制御部35に供給される。さらに、制御電圧検出回路49は、検出した制御電圧(これら制御電圧に対応する値)を制御部35に入力するようになっている。   The smoothing circuit 27 is, for example, a smoothing capacitor that smoothes the constant current power rectified by the rectifying circuit 24. The smoothing circuit 27 includes a 15V power supply circuit 47 as a (first) control power supply circuit that generates an operating voltage of 15V as a first control voltage from the main voltage, and a second control from the 15V power supply circuit 47. A control voltage detection for detecting these control voltages (voltages corresponding to these control voltages) is connected to a 5V power supply circuit 48 as a (second) control power supply circuit that generates an operating voltage of 5V as a voltage. A circuit 49 is connected. An operating voltage of 15V is supplied from the 15V power supply circuit 47, and an operating voltage (Vcc) of 5V is supplied from the 5V power supply circuit 48 to the control unit 35, for example. Further, the control voltage detection circuit 49 inputs the detected control voltages (values corresponding to these control voltages) to the control unit 35.

また、カレントトランス22の二次側には、定電流電源装置11の入力電流(入力電流の実効値)、あるいはこの定電流電源装置11の入力電流に対応する電流(電流の実効値)を検出する電流検出回路51が増幅回路52を介して接続されている。この電流検出回路51は、例えば１５Ｖ電源回路47から電源が供給されている。そして、この電流検出回路51で検出された定電流電力の電流値が増幅回路52を介して制御部35に入力され、制御部35はこの電流値に応じて点灯回路31を制御する。なお、この電流検出回路51により検出される入力電流は、例えば２．８Ａ〜６．６Ａを通常動作範囲として発光素子16の調光に使用する。   Also, on the secondary side of the current transformer 22, the input current of the constant current power supply device 11 (effective value of the input current) or a current corresponding to the input current of the constant current power supply device 11 (effective value of the current) is detected. A current detection circuit 51 is connected via an amplifier circuit 52. The current detection circuit 51 is supplied with power from, for example, a 15V power supply circuit 47. The current value of the constant current power detected by the current detection circuit 51 is input to the control unit 35 via the amplifier circuit 52, and the control unit 35 controls the lighting circuit 31 according to the current value. The input current detected by the current detection circuit 51 is used for dimming the light emitting element 16 with a normal operating range of 2.8 A to 6.6 A, for example.

発光素子16としては、標識灯10の設置場所に応じて、例えば白色、赤色、緑色、青色、黄色などの所定の色の光を発するＬＥＤなどの半導体発光素子が用いられる。本実施形態では、複数の発光素子16が互いに直列に接続され、発光素子16全体として発光ユニット(灯体)を構成している。図１においては、発明をより明確にするために発光素子16を２つ図示しているが、以下、発光素子16は２つに限定されるものではなく、３つ以上を直列に接続してもよいし、１つのみで用いてもよい。この発光素子16がＬＥＤの場合には、複数のＬＥＤ素子を基板に実装して蛍光体を含む封止部材で覆うＣＯＢ(Chip On Board)方式、ＬＥＤ素子が搭載された接続端子付きのＳＭＤ(Surface Mount Device)パッケージを基板に実装する方式など、いずれを用いてもよい。なお、発光素子16は、砲弾型のＬＥＤであってもよい。   As the light-emitting element 16, a semiconductor light-emitting element such as an LED that emits light of a predetermined color such as white, red, green, blue, or yellow is used depending on the installation location of the marker lamp 10. In the present embodiment, a plurality of light emitting elements 16 are connected in series, and the light emitting element 16 as a whole constitutes a light emitting unit (lamp). In FIG. 1, two light emitting elements 16 are shown for clarifying the invention. However, the light emitting elements 16 are not limited to two in the following, and three or more light emitting elements 16 are connected in series. Alternatively, only one may be used. When the light-emitting element 16 is an LED, a COB (Chip On Board) system in which a plurality of LED elements are mounted on a substrate and covered with a sealing member containing a phosphor, an SMD with a connection terminal on which the LED elements are mounted ( Any method such as a method of mounting a (Surface Mount Device) package on a substrate may be used. The light emitting element 16 may be a bullet type LED.

定電流電源装置11は、例えば図示しないサイリスタなどの制御素子の位相制御により、複数の調光段階に対応して複数段階、例えば５段階の定電流を出力可能となっている。そして、この定電流電源装置11は、出力電力波形、すなわち絶縁トランス12の一次側の電力波形(電圧波形または電流波形)を監視し、この電力波形の波形歪に基づいて発光素子16が異常点灯状態であるかどうかを検出する検出回路55を備えている。この検出回路55は、ＬＥＤ式などの発光素子16を用いる標識灯10に置き換える以前の、従来用いていた電球式の標識灯の断芯を検出するための回路をそのまま適用したものである。なお、以下、異常点灯状態とは、全ての発光素子16が完全に点灯しない状態(不点灯状態)、一部(所定数以上)の発光素子16が点灯しない状態(一部不点灯状態)、および、発光素子16が所定の光度範囲よりも小さい光度で点灯した状態(暗点灯状態)などの正しく点灯していない状態などの、各種の状態を含むものとする。   The constant current power supply 11 can output a plurality of stages, for example, five stages of constant currents corresponding to a plurality of dimming stages by phase control of a control element such as a thyristor (not shown). The constant current power supply 11 monitors the output power waveform, that is, the power waveform (voltage waveform or current waveform) on the primary side of the isolation transformer 12, and the light emitting element 16 is abnormally lit based on the waveform distortion of the power waveform. A detection circuit 55 for detecting whether or not the state is present is provided. The detection circuit 55 is an application of the circuit for detecting the disconnection of a conventionally used bulb-type marker lamp before the replacement with the marker lamp 10 using the light-emitting element 16 such as an LED type. Hereinafter, the abnormal lighting state is a state in which all the light emitting elements 16 are not completely lit (non-lighting state), a state in which some (a predetermined number or more) of the light emitting elements 16 are not lit (partial non-lighting state), In addition, it includes various states such as a state in which the light emitting element 16 is not properly lit, such as a state in which the light emitting element 16 is lit at a light intensity smaller than a predetermined light intensity range (dark lighting state).

次に、一実施形態の動作を説明する。   Next, the operation of the embodiment will be described.

絶縁トランス12では、定電流制御装置11から供給される高圧の一次側電源を低圧の二次側電源に変換して各標識灯10の点灯制御回路15に(カレントトランス21，22を介して)供給する。電源供給された各標識灯10の点灯制御回路15では、保護回路26の保護接点41の一次側電圧により閉回路43が動作して保護接点41を閉じ、電源が点灯回路31側に供給される。そして、制御部35が定電流電源装置11からの入力電流と発光素子16に流す電流(マージンを含む)との対応を示す制御テーブルを予め記憶しており、この制御テーブルを参照して電流検出回路51で検出した入力電流に応じてＰＷＭ信号を設定し(バッファ回路38を介して)、点灯回路31の動作を制御することで、発光素子16の点灯電流を制御して発光素子16を入力電流に応じた所定の調光点灯状態で点灯させる。このとき、制御部35では、主電圧検出回路30で検出した主電圧により発光素子16の点灯状態を監視し、この検出した主電圧に応じて(バッファ回路36を介して)負荷調整回路25に信号を出力してこの負荷調整回路25を開閉することで、発光素子16に供給される電流値を各調光段階で一定となるように制御する。例えば、発光素子16は、周囲環境に応じて設定された定電流電源装置11からの出力電流の段階に対応して調光される。本実施形態では、例えば発光素子16は、１００％、２５％、５％、１％および０．２％の５段階のいずれかに調光される。   In the insulation transformer 12, the high-voltage primary power supplied from the constant current control device 11 is converted into a low-voltage secondary power supply to the lighting control circuit 15 of each marker lamp 10 (through the current transformers 21 and 22). Supply. In the lighting control circuit 15 of each indicator lamp 10 supplied with power, the closed circuit 43 is operated by the primary side voltage of the protective contact 41 of the protective circuit 26 to close the protective contact 41, and the power is supplied to the lighting circuit 31 side. . The control unit 35 stores in advance a control table indicating the correspondence between the input current from the constant current power supply device 11 and the current (including the margin) that flows through the light emitting element 16, and the current detection is performed with reference to this control table. The PWM signal is set according to the input current detected by the circuit 51 (via the buffer circuit 38), and the operation of the lighting circuit 31 is controlled to control the lighting current of the light emitting element 16 and input the light emitting element 16. The light is turned on in a predetermined dimming lighting state corresponding to the current. At this time, the control unit 35 monitors the lighting state of the light-emitting element 16 based on the main voltage detected by the main voltage detection circuit 30, and the load adjustment circuit 25 is connected to the detected main voltage (via the buffer circuit 36). By outputting a signal and opening and closing the load adjustment circuit 25, the current value supplied to the light emitting element 16 is controlled to be constant at each dimming stage. For example, the light emitting element 16 is dimmed in accordance with the stage of the output current from the constant current power supply device 11 set according to the surrounding environment. In the present embodiment, for example, the light emitting element 16 is dimmed in any of five stages of 100%, 25%, 5%, 1%, and 0.2%.

ここで、定電流電源装置11の出力電力波形に生じた歪を介して異常点灯状態(不点灯状態など)を検出する構成の場合、発光素子16を用いた(ＬＥＤ式などの)標識灯10では、供給電源側と発光素子16との間に点灯制御回路15が介在するので、発光素子16の異常が直接判断しにくく、点灯制御回路15側での措置が必要となる。したがって、発光素子16の異常点灯時に従来の電球(白熱ランプ)と同様な条件を発生させるためには、点灯制御回路15の入力側を開放して、電球式の標識灯の断芯と同様の状態を作り出すことが必要となる。また、標識灯10の異常点灯は、発光素子16自体の故障だけでなく、点灯制御回路15の故障も要因として考えられるため、どちらの場合においても点灯制御回路15の入力側を開放して、電球式の標識灯の断芯と同様の状態を作り出すことが必要となる。この場合、点灯制御回路15からの信号などによる直接制御では、点灯制御回路15の故障時に信号制御ができなくなり異常点灯状態になっても開放装置14を動作することができない。   Here, in the case of a configuration in which an abnormal lighting state (non-lighting state or the like) is detected through distortion generated in the output power waveform of the constant current power supply device 11, the indicator lamp 10 (such as an LED type) using the light emitting element 16 Then, since the lighting control circuit 15 is interposed between the power supply side and the light emitting element 16, it is difficult to directly determine the abnormality of the light emitting element 16, and a measure on the lighting control circuit 15 side is required. Therefore, in order to generate conditions similar to those of a conventional light bulb (incandescent lamp) when the light emitting element 16 is abnormally lit, the input side of the lighting control circuit 15 is opened and the same as the disconnection of the light bulb type indicator lamp. It is necessary to create a state. In addition, the abnormal lighting of the indicator lamp 10 is considered not only due to the failure of the light emitting element 16 itself, but also the failure of the lighting control circuit 15, so in either case, the input side of the lighting control circuit 15 is opened, It is necessary to create a state similar to the disconnection of a bulb-type marker lamp. In this case, in the direct control by the signal from the lighting control circuit 15 or the like, when the lighting control circuit 15 fails, the signal control cannot be performed and the opening device 14 cannot be operated even if the lighting state is abnormal.

そこで、本実施形態の標識灯システムでは、発光素子16がショート(短絡)による故障(短絡故障)によって異常点灯状態となった場合に、制御部35によって負荷調整回路25の動作を停止させてこの負荷調整回路25を開放させ、点灯制御回路15の入力電圧を意図的に上昇させる。   Therefore, in the marker lamp system of the present embodiment, when the light emitting element 16 becomes abnormally lit due to a failure due to a short circuit (short circuit failure), the operation of the load adjustment circuit 25 is stopped by the control unit 35. The load adjustment circuit 25 is opened, and the input voltage of the lighting control circuit 15 is intentionally increased.

すなわち、発光素子16がショート(短絡)した場合、発光素子16に供給される主電圧が低下する。したがって、制御部35は、主電圧検出回路30により検出した主電圧が所定値、例えば全ての発光素子16が正常点灯したときの出力電圧の５０％以下に低下した場合(換言すれば、半数以上の発光素子16が短絡故障した場合)に、上記の発光素子16のショート(短絡)による故障で不点灯状態であるものと判断し、(バッファ回路36を介して)負荷調整回路25に信号を出力して負荷調整回路25の動作を停止させて開放する。この結果、点灯制御回路15の入力電圧が上昇し、保護回路26の電圧検出回路44により検出された電圧が所定電圧V2となると、開回路42が保護接点41を開放し、点灯回路31および発光素子16を入力電圧から切り離す。そして、入力電圧がさらに上昇して所定電圧V1となると、駆動コイル14aが接点部14bを引き離し、開放装置14が絶縁トランス12の二次側を物理的に開放する。なお、保護回路26の開回路42は、保持コンデンサ45および平滑回路27により動作が保持されるので、少なくとも開放装置14の開放動作まで保護接点41の開状態が維持される。   That is, when the light emitting element 16 is short-circuited, the main voltage supplied to the light emitting element 16 decreases. Therefore, when the main voltage detected by the main voltage detection circuit 30 drops to a predetermined value, for example, 50% or less of the output voltage when all the light emitting elements 16 are normally lit (in other words, more than half of the control voltage). In the case of a short circuit failure of the light emitting element 16), it is determined that the light emitting element 16 is not lit due to a failure due to a short circuit (short circuit), and a signal is sent to the load adjustment circuit 25 (via the buffer circuit 36). An output is made to stop and release the operation of the load adjustment circuit 25. As a result, when the input voltage of the lighting control circuit 15 rises and the voltage detected by the voltage detection circuit 44 of the protection circuit 26 reaches the predetermined voltage V2, the open circuit 42 opens the protective contact 41, and the lighting circuit 31 and the light emission Disconnect element 16 from the input voltage. When the input voltage further rises to the predetermined voltage V1, the driving coil 14a separates the contact portion 14b, and the opening device 14 physically opens the secondary side of the insulating transformer 12. Since the operation of the open circuit 42 of the protection circuit 26 is held by the holding capacitor 45 and the smoothing circuit 27, the open state of the protective contact 41 is maintained at least until the opening device 14 is opened.

このように、上記一実施形態では、発光素子16からなる発光ユニットに対して点灯制御回路15が１対１で対応する標識灯10を用いた標識システムにおいて、絶縁トランス12の二次側の開放電圧を利用する。すなわち、標識灯10では、正常動作中に、点灯制御回路15の制御部35が、負荷調整回路25により入力の開放、短絡をスイッチング制御して発光素子16の点灯に最適な電圧に調整しているので、主電圧検出回路30により検出した出力電圧により発光素子16の短絡故障(異常)を制御部35が検出したとき(主電圧が所定値以下に低下したとき)には、制御部35が負荷調整回路25の動作を停止させることにより、点灯制御回路15の入力電圧を上昇させて開放装置14を動作させ、入力側を物理的に開放する。このとき、カレントトランス21を設けているので、絶縁トランス12の二次側で開放装置14への適正な動作電圧を供給することができる。したがって、この開放により電球式の標識灯の断芯と同様の状態を作り出すことで、この絶縁トランス12の一次側の電力波形(電圧波形、あるいは電流波形)、すなわち定電流電源装置11の出力電力波形に歪を生じさせ、定電流電源装置11の検出回路55がこの波形歪を検出することにより、発光素子16の短絡故障による異常を検出回路55により検出可能であるとともに、定電流電源装置11に標識灯10の異常を報知することができる。この結果、既存の定電流電源装置11と電球式の標識灯を設置した空港に対し、既存の定電流電源装置11、電源ラインなどの各種インフラ、および、検出回路55を用いる断芯監視システムの更新を行うことなく、電球式の標識灯からＬＥＤ式の標識灯10への置換が可能になる。   As described above, in the above embodiment, in the sign system using the sign lamp 10 in which the lighting control circuit 15 has a one-to-one correspondence with the light emitting unit composed of the light emitting element 16, the secondary side of the insulating transformer 12 is opened. Use voltage. That is, in the indicator lamp 10, during normal operation, the control unit 35 of the lighting control circuit 15 adjusts the voltage to be optimal for lighting of the light emitting element 16 by switching control of open / short of the input by the load adjustment circuit 25. Therefore, when the control unit 35 detects a short-circuit failure (abnormality) of the light emitting element 16 based on the output voltage detected by the main voltage detection circuit 30 (when the main voltage drops below a predetermined value), the control unit 35 By stopping the operation of the load adjustment circuit 25, the input voltage of the lighting control circuit 15 is raised to operate the opening device 14, and the input side is physically opened. At this time, since the current transformer 21 is provided, an appropriate operating voltage can be supplied to the opening device 14 on the secondary side of the insulating transformer 12. Therefore, by creating a state similar to the disconnection of the bulb-type marker lamp by this opening, the power waveform (voltage waveform or current waveform) on the primary side of this insulating transformer 12, that is, the output power of the constant current power supply device 11 Distortion is generated in the waveform, and the detection circuit 55 of the constant current power supply device 11 detects this waveform distortion, so that an abnormality due to a short circuit failure of the light emitting element 16 can be detected by the detection circuit 55 and the constant current power supply device 11 It is possible to notify the abnormality of the marker lamp 10. As a result, for the airport where the existing constant current power supply 11 and the bulb-type marker lamp are installed, the existing constant current power supply 11, various infrastructures such as power lines, and the disconnection monitoring system using the detection circuit 55 It is possible to replace the bulb-type marker lamp 10 with the LED-type marker lamp 10 without updating.

具体的に、発光素子16を２つ以上直列に接続した発光ユニットに対して、点灯制御回路15では、主電圧検出回路30により検出した出力電圧が全ての発光素子16の正常点灯時の出力電圧の５０％以下に低下したときに、制御部35により負荷調整回路25を開放させるので、半数以上の発光素子16が短絡故障した場合に検出回路55によって確実に検出できる。   Specifically, for a light emitting unit in which two or more light emitting elements 16 are connected in series, the lighting control circuit 15 uses the output voltage detected by the main voltage detection circuit 30 as the output voltage when all the light emitting elements 16 are normally lit. Since the load adjustment circuit 25 is opened by the control unit 35 when the voltage drops to 50% or less, the detection circuit 55 can reliably detect a short circuit failure of more than half of the light emitting elements 16.

さらに、負荷調整回路25は、点灯制御回路15の入力側に位置しているので、点灯制御回路15内の他の回路の動作条件などの影響を受けにくく、発光素子16の短絡故障時に確実に開放できる。   In addition, since the load adjustment circuit 25 is located on the input side of the lighting control circuit 15, it is not easily affected by the operating conditions of other circuits in the lighting control circuit 15, and can reliably be detected in the event of a short circuit failure of the light emitting element 16. It can be opened.

そして、発光素子16が短絡故障した際、点灯制御回路15の保護で絶縁トランス12の二次側を遮断させるための手段として、ヒューズやリレーなどを用いることが考えられるものの、ヒューズは、定電流電源装置11を用いた定電流回路においては、過電流による遮断ができないため使用できず、リレーは、保持状態、復帰において電力を必要とし、また、自己復帰する可能性があり、別途の保護回路などが必要になる。そこで、通電時および非通電時のそれぞれにおいて開状態および閉状態が機械的に保持される開放装置14を用いることで、電子回路を必要とせず、点灯制御回路15の故障時などでも開放装置14が自動動作して発光素子16の短絡故障による標識灯10の異常点灯状態(不点灯状態など)を検出回路55によって確実に検出できるとともに、例えば発光素子16の故障などの場合、発光素子16を交換するなどして復帰する際には、開放装置14の接点部14bを手動でオン状態とする必要があり、開放装置14の自己復帰の可能性がない。したがって、別途の保護回路などが不要で、標識灯10をより小型化できる。   Then, when the light emitting element 16 is short-circuited, it is conceivable to use a fuse or a relay as a means for interrupting the secondary side of the insulation transformer 12 for protection of the lighting control circuit 15, but the fuse has a constant current. The constant current circuit using the power supply device 11 cannot be used because it cannot be shut off due to overcurrent, and the relay requires power in the holding state and recovery, and may be self-recovering. Etc. are required. Therefore, by using an opening device 14 that is mechanically held in an open state and a closed state in each of energization and non-energization, an electronic circuit is not required, and the opening device 14 can be used even when the lighting control circuit 15 fails. Can automatically detect the abnormal lighting state (non-lighting state, etc.) of the indicator lamp 10 due to a short circuit failure of the light emitting element 16 by the detection circuit 55, and in the case of a failure of the light emitting element 16, for example, When returning by replacement, etc., it is necessary to manually turn on the contact portion 14b of the opening device 14, and there is no possibility of the opening device 14 self-recovering. Therefore, a separate protection circuit or the like is unnecessary, and the marker lamp 10 can be further downsized.

なお、上記一実施形態において、負荷調整回路25は、整流回路24の後段、すなわち二次側に接続したが、例えば整流回路24の前段に接続してもよい。すなわち、負荷調整回路25は、点灯制御回路15の入力側に位置していればよい。   In the above-described embodiment, the load adjustment circuit 25 is connected to the rear stage of the rectifier circuit 24, that is, the secondary side, but may be connected to the front stage of the rectifier circuit 24, for example. That is, the load adjustment circuit 25 only needs to be positioned on the input side of the lighting control circuit 15.

本発明の一実施形態を説明したが、この実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。この新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。この実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   Although one embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 標識灯
11 定電流電源装置
12 可飽和装置としての絶縁トランス
14 開放装置
15 点灯制御回路
16 発光素子
25 負荷調整回路
30 電圧検出回路である主電圧検出回路
31 点灯回路
35 制御部
55 検出回路 10 Indicator light
11 Constant current power supply
12 Isolation transformer as a saturable device
14 Opening device
15 Lighting control circuit
16 Light emitting element
25 Load adjustment circuit
30 Main voltage detection circuit that is a voltage detection circuit
31 Lighting circuit
35 Control unit
55 Detection circuit

Claims (2)

電力波形を監視することで発光素子が異常点灯状態であるかどうかを検出する検出回路を備えた定電流電源装置と；
この定電流電源装置の出力端間に直列に接続される少なくとも１つの可飽和装置と；
直列に接続される少なくとも１つの発光素子と、
この発光素子を点灯させる点灯回路と、
前記可飽和装置の出力側の高圧側と低圧側との間を開閉する負荷調整回路と、
この負荷調整回路の開閉を制御する制御部と、
出力電圧を検出する電圧検出回路とを有し、
前記点灯回路により前記発光素子の点灯状態を制御するとともに、前記電圧検出回路により検出した出力電圧が所定値以下に低下したときに前記制御部により前記負荷調整回路を開放させる点灯制御回路と、
この点灯制御回路の入力電圧により動作され、この入力電圧が所定電圧以上となったときに前記可飽和装置と前記点灯制御回路との接続を開放する開放装置と
を備えた標識灯と；
を具備していることを特徴とする標識灯システム。 A constant current power supply device having a detection circuit that detects whether or not the light emitting element is in an abnormal lighting state by monitoring a power waveform;
At least one saturable device connected in series between the outputs of the constant current power supply;
At least one light emitting element connected in series;
A lighting circuit for lighting the light emitting element;
A load adjustment circuit that opens and closes between a high-pressure side and a low-pressure side on the output side of the saturable device;
A control unit for controlling opening and closing of the load adjustment circuit;
A voltage detection circuit for detecting the output voltage,
A lighting control circuit that controls the lighting state of the light emitting element by the lighting circuit, and that opens the load adjustment circuit by the control unit when the output voltage detected by the voltage detection circuit falls below a predetermined value;
An indicator lamp that is operated by an input voltage of the lighting control circuit and includes an opening device that opens a connection between the saturable device and the lighting control circuit when the input voltage exceeds a predetermined voltage;
A sign lamp system characterized by comprising: 前記標識灯は、発光素子が２つ以上直列に接続され、
前記点灯制御回路は、前記電圧検出回路により検出した出力電圧が正常時の出力電圧の５０％以下に低下したときに、前記制御部により前記負荷調整回路を開放させる
ことを特徴とする請求項１記載の標識灯システム。 The marker lamp has two or more light emitting elements connected in series,
The lighting control circuit causes the control unit to open the load adjustment circuit when the output voltage detected by the voltage detection circuit decreases to 50% or less of a normal output voltage. The beacon light system described.
JP2015026833A 2015-02-13 2015-02-13 Beacon light system Expired - Fee Related JP6369690B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015026833A JP6369690B2 (en) 2015-02-13 2015-02-13 Beacon light system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015026833A JP6369690B2 (en) 2015-02-13 2015-02-13 Beacon light system

Publications (2)

Publication Number Publication Date
JP2016149322A true JP2016149322A (en) 2016-08-18
JP6369690B2 JP6369690B2 (en) 2018-08-08

Family

ID=56691332

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015026833A Expired - Fee Related JP6369690B2 (en) 2015-02-13 2015-02-13 Beacon light system

Country Status (1)

Country Link
JP (1) JP6369690B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012014879A (en) * 2010-06-29 2012-01-19 Panasonic Electric Works Co Ltd Lighting device for semiconductor light emitting element, and luminaire using the same
JP2012204207A (en) * 2011-03-25 2012-10-22 Toshiba Lighting & Technology Corp Marker lamp
JP2013206852A (en) * 2012-03-29 2013-10-07 Toshiba Lighting & Technology Corp Marker lamp and marker lamp system
JP2014010972A (en) * 2012-06-28 2014-01-20 Inaba Electric Work Co Ltd Road lamp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012014879A (en) * 2010-06-29 2012-01-19 Panasonic Electric Works Co Ltd Lighting device for semiconductor light emitting element, and luminaire using the same
JP2012204207A (en) * 2011-03-25 2012-10-22 Toshiba Lighting & Technology Corp Marker lamp
JP2013206852A (en) * 2012-03-29 2013-10-07 Toshiba Lighting & Technology Corp Marker lamp and marker lamp system
JP2014010972A (en) * 2012-06-28 2014-01-20 Inaba Electric Work Co Ltd Road lamp

Also Published As

Publication number Publication date
JP6369690B2 (en) 2018-08-08

Similar Documents

Publication Publication Date Title
US9480123B2 (en) LED retrofit lamp
US9622317B2 (en) LED retrofit lamp
US11421868B2 (en) Tube LED
EP3005834B1 (en) Led lamp comprising a safety module for safe operation on various ballasts
US20120313540A1 (en) Light emitting apparatus
RU2621720C2 (en) Bypass device in the lighting control system without neutral conductor
US9942955B2 (en) LED lamp using switching circuit
KR20120080594A (en) Led lamp
US11812529B2 (en) Eliminating flicker and open load protection for driver compatible with NAFTA dim ECG
US20200084856A1 (en) Solid-State Lighting With Complementary Controls
US10349477B2 (en) LED double-capped lamp, for operation on an electronic ballast for a low-pressure discharge lamp, especially a fluorescent lamp, and method for operating such a lamp
KR101020869B1 (en) Airfield light system using a luminescent diode lamp
CN107426868B (en) LED (light emitting diode) signal machine control system
US10959309B2 (en) LED lamp protection circuit
JP6369689B2 (en) Beacon light and beacon light system
JP6369690B2 (en) Beacon light system
JP2016177879A (en) Marker lamp and marker lamp system
KR20140018604A (en) Led lighting on/off dimming control system
EP3556182B1 (en) A retrofit light emitting diode, led, tube for connecting to an electronic ballast, as well as a corresponding lighting system and a method
KR101253387B1 (en) Airport lighting system using led lamp
JP2012204207A (en) Marker lamp
JP2016177958A (en) Marker lamp and marker lamp system
US9713236B1 (en) Solid-state lighting arrangement with startup delay circuit
JP2018055828A (en) Lighting device
EP3214901B1 (en) High-safety led tube

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20170914

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20180607

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20180613

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20180626

R151 Written notification of patent or utility model registration

Ref document number: 6369690

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

LAPS Cancellation because of no payment of annual fees