JP6241730B2 - lighting equipment - Google Patents

lighting equipment Download PDF

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Publication number
JP6241730B2
JP6241730B2 JP2013248433A JP2013248433A JP6241730B2 JP 6241730 B2 JP6241730 B2 JP 6241730B2 JP 2013248433 A JP2013248433 A JP 2013248433A JP 2013248433 A JP2013248433 A JP 2013248433A JP 6241730 B2 JP6241730 B2 JP 6241730B2
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light
lighting
load
battery
circuit
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JP2015106509A (en
Inventor
圭一郎 奥浦
圭一郎 奥浦
佐々木　工輔
工輔 佐々木
勇錦 蘇
勇錦 蘇
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Priority to JP2013248433A priority Critical patent/JP6241730B2/en
Priority to PCT/JP2014/005316 priority patent/WO2015079618A1/en
Priority to TW103137313A priority patent/TWI612845B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/005—Electric lighting devices with self-contained electric batteries or cells the device being a pocket lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • F21S8/035—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade by means of plugging into a wall outlet, e.g. night light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/375—Switched mode power supply [SMPS] using buck topology
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/38—Switched mode power supply [SMPS] using boost topology
    • 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
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Architecture (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

本発明は一般に照明器具、より詳細には商用電源のコンセントに差し込まれて通路の床面を照明するナイトライトに関する。   The present invention relates generally to luminaires, and more particularly to nightlights that are plugged into commercial power outlets to illuminate the floor of a passageway.

従来、通路の壁面のコンセントに差し込まれて、周囲の暗さや人の通行を検知して通路の足元を照明する足元灯があった（例えば特許文献１参照）。特許文献１に記載の足元灯は、一次電池を備えており、コンセントから取り外して一次電池を電源とする携帯電灯として用いることができる。   Conventionally, there has been a foot lamp that is inserted into an outlet on the wall surface of the passage and illuminates the foot of the passage by detecting the darkness of the surroundings and the passage of people (for example, see Patent Document 1). The footlamp described in Patent Document 1 includes a primary battery, and can be used as a portable light that is removed from an outlet and uses the primary battery as a power source.

実用新案登録第３１０８６２３号公報Utility Model Registration No. 3108623

特許文献１に記載の足元灯は、コンセントから取り外して携帯電灯として用いることができるが、床面を照らす足元灯のため、照らす範囲が狭く、携帯電灯としての使い勝手が悪かった。また、足元灯は一般的に、足元灯の明かりをまぶしく感じにくくするために、電球色の明かりを採用しているので、携帯電灯としての使い勝手が悪かった。   The footlight described in Patent Document 1 can be removed from the outlet and used as a portable light. However, since the footlight illuminates the floor surface, the illumination area is narrow and the usability as a portable light is poor. Moreover, since the foot lamp generally employs a light bulb colored light to make it difficult to feel the light of the foot lamp dazzlingly, it is not easy to use as a portable electric light.

本発明は上記課題に鑑みて為され、ハンディライトの使い勝手を向上させた照明器具を提供することを目的とする。   This invention is made | formed in view of the said subject, and it aims at providing the lighting fixture which improved the usability of the handy light.

上記課題を解決するために、本発明の照明器具は、プラグと、第１照明負荷と第２照明負荷とを点灯させる点灯回路と、操作部と、導光板と、照度変換部と、制御部と、器体とを備えることを特徴とする。前記第１照明負荷の放射光は、第１色温度である。前記第２照明負荷の放射光は、前記第１色温度とは異なる第２色温度である。前記プラグは、商用電源のコンセントに着脱自在に接続される。前記操作部は、前記第２照明負荷を点灯又は消灯させるために操作される。前記導光板は、入射面に入射した前記第１照明負荷の放射光及び前記第２照明負荷の放射光を導光して出射面から外部に放射する。前記照度変換部は、周囲の明るさに応じて出力の大きさが変化する。前記制御部は、前記照度変換部の出力から求めた明るさが所定値よりも暗くなると、前記コンセントから前記プラグを介して供給される電力で前記第１照明負荷を点灯させるように前記点灯回路を制御する。前記制御部は、前記操作部を用いて点灯操作が行われると電池から供給される電力で前記第２照明負荷を点灯させるように前記点灯回路を制御する。前記器体は、前記プラグ、前記点灯回路、前記操作部、前記導光板、前記照度変換部、及び前記制御部を有し、前記導光板の前記出射面を一面から露出させる。前記導光板の前記出射面は、前記一面の半分以上の面積を有する。前記電池から供給される電力で点灯する前記第２照明負荷の前記第２色温度が、前記商用電源から供給される電力で点灯する前記第１照明負荷の前記第１色温度よりも高いことを特徴とする。 In order to solve the above problem, a lighting device of the invention, a plug, a lighting circuit for lighting a first lighting load and the second lighting load, and the operation portion, a light guide plate, the illuminance converting unit, the control unit And a container. The emitted light of the first illumination load has a first color temperature. The emitted light of the second illumination load has a second color temperature different from the first color temperature. The plug is detachably connected to a commercial power outlet. The operation unit is operated to turn on or turn off the second illumination load. The light guide plate guides the radiated light of the first illumination load and the radiated light of the second illumination load incident on the incident surface and radiates the light from the output surface to the outside. The illuminance conversion unit changes the output magnitude according to ambient brightness. When the brightness obtained from the output of the illuminance conversion unit is darker than a predetermined value, the control unit turns on the first lighting load with power supplied from the outlet via the plug. To control. When the lighting operation is performed using the operation unit, the control unit controls the lighting circuit so that the second lighting load is lit with electric power supplied from a battery. The container includes the plug, the lighting circuit, the operation unit, the light guide plate, the illuminance conversion unit, and the control unit, and exposes the emission surface of the light guide plate from one surface. The exit surface of the light guide plate has an area that is more than half of the one surface . The second color temperature of the second illumination load to be turned by the power supplied from the previous SL cells, we higher than the first color temperature of the first illumination load to be turned on by the power supplied from the commercial power source It is characterized by that.

この発明において、前記電池から供給される電力で点灯する前記第２照明負荷の放射光は、白色であり、前記商用電源から供給される電力で点灯する前記第１照明負荷の放射光は、電球色であることも好ましい。
この発明において、前記照明器具は、基板を更に備えることも好ましい。前記基板は、前記器体に設けられる。前記基板は、第１面に前記照度変換部を実装する。前記基板は、厚み方向において前記第１面とは反対側の第２面に前記第１照明負荷と前記第２照明負荷とのうち少なくとも一方を実装する。 In this invention, the radiated light of the second lighting load that is lit by the power supplied from the battery is white, and the radiated light of the first lighting load that is lit by the power supplied from the commercial power source is a light bulb. It is also preferable that the color.
In the present invention, it is preferable that the lighting apparatus further includes a substrate. The substrate is provided on the container. The illuminance conversion unit is mounted on the first surface of the substrate. The substrate mounts at least one of the first illumination load and the second illumination load on a second surface opposite to the first surface in the thickness direction.

導光板は、器体の一面における半分以上の面積を有し、器体の一面に露出して照明器具の周囲を照らすので、照明器具をハンディライトとして使用した際に、より広い範囲を照らすことができる。また、照明器具をナイトライトとして使用するときの放射光の色温度に比べて、ハンディライトとして使用するときの放射光の色温度が高いので、視認性がよくなり、ハンディライトとして使いやすい。   The light guide plate has more than half the area of one side of the body and is exposed on the side of the body to illuminate the surroundings of the luminaire. Therefore, when the luminaire is used as a handy light, it illuminates a wider area. Can do. Moreover, since the color temperature of the emitted light when using it as a handy light is higher than the color temperature of the emitted light when using a lighting fixture as a nightlight, visibility is improved and it is easy to use as a handy light.

本実施形態における照明器具を示し、（ａ）は要部を説明する正面図、（ｂ）は要部を説明する右断面図、（ｃ）は上面図である。The lighting fixture in this embodiment is shown, (a) is a front view explaining a principal part, (b) is a right sectional view explaining a principal part, (c) is a top view. 本実施形態における照明器具を示し、（ａ）は左側面図、（ｂ）は正面図、（ｃ）は要部を説明する分解斜視図である。The lighting fixture in this embodiment is shown, (a) is a left view, (b) is a front view, (c) is a disassembled perspective view explaining the principal part. 本実施形態における照明器具の概略的な回路ブロック図である。It is a schematic circuit block diagram of the lighting fixture in this embodiment.

以下に、本実施形態の照明器具について、図１〜図３を参照して説明する。尚、以下の説明では図１（ａ）に示す向きを基準として上下左右の方向を規定し、図１（ｂ）における左方向を前方向、図１（ｂ）における右方向を後方向として説明する。   Below, the lighting fixture of this embodiment is demonstrated with reference to FIGS. 1-3. In the following description, the vertical and horizontal directions are defined with reference to the orientation shown in FIG. 1A, the left direction in FIG. 1B is defined as the forward direction, and the right direction in FIG. 1B is defined as the backward direction. To do.

本実施形態の照明器具は、例えば壁面に設けられたコンセントに接続され、周囲が暗くなると床面を照らす足元灯として用いられる。照明器具は電池を備えており、コンセントから取り外して電池を電源とするハンディライト（携帯電灯）として用いることができる。   The lighting fixture of this embodiment is connected to an outlet provided on a wall surface, for example, and is used as a foot lamp that illuminates the floor surface when the surroundings become dark. The luminaire includes a battery, and can be used as a handy light (portable light) that is removed from an outlet and uses the battery as a power source.

本実施形態の照明器具１は、図３に示すように、点灯回路６と、ＬＥＤ（Light Emitting Diode）５ａ，５ｂ（照明負荷）と、ＬＥＤ９ａ（点灯部９）と、制御回路７（制御部）と、電池１２とを備えている。さらに照明器具１は、電源回路１８と、停電検知回路１１と、電圧測定回路１４とを備えている。   As illustrated in FIG. 3, the lighting fixture 1 of the present embodiment includes a lighting circuit 6, LEDs (Light Emitting Diodes) 5 a and 5 b (lighting loads), an LED 9 a (lighting unit 9), and a control circuit 7 (control unit). ) And a battery 12. Further, the lighting fixture 1 includes a power supply circuit 18, a power failure detection circuit 11, and a voltage measurement circuit 14.

電源回路１８は、例えばバックコンバータ方式のスイッチング電源（図示せず）で構成されていて、１次側に入力される交流電圧を所定の直流電圧に変換して２次側に出力する。電源回路１８の１次側は、プラグ４に電気的に接続している。電源回路１８は、プラグ４が商用電源１７のコンセント（図示せず）に挿入されることにより、商用電源１７から電力が供給される。電源回路１８の２次側には点灯回路６が接続されている。尚、電源回路１８は、スイッチング電源で構成されることに限定されず、１次側に入力される交流電圧を所定の直流電圧に変換して２次側に出力することができる適宜の構成でもよい。   The power supply circuit 18 is configured by, for example, a buck converter type switching power supply (not shown), converts an AC voltage input to the primary side into a predetermined DC voltage, and outputs it to the secondary side. The primary side of the power supply circuit 18 is electrically connected to the plug 4. The power supply circuit 18 is supplied with power from the commercial power supply 17 when the plug 4 is inserted into an outlet (not shown) of the commercial power supply 17. The lighting circuit 6 is connected to the secondary side of the power supply circuit 18. The power supply circuit 18 is not limited to a switching power supply, and may have an appropriate configuration that can convert an AC voltage input to the primary side into a predetermined DC voltage and output it to the secondary side. Good.

停電検知回路１１は、電源回路１８の一次側に入力される電圧を監視することによって、商用電源１７が供給されているか否かを検知する。停電検知回路１１は、商用電源１７が供給されていると、制御回路７に信号ＳＮ１を出力する。   The power failure detection circuit 11 detects whether or not the commercial power supply 17 is supplied by monitoring the voltage input to the primary side of the power supply circuit 18. The power failure detection circuit 11 outputs a signal SN1 to the control circuit 7 when the commercial power supply 17 is supplied.

点灯回路６は、レギュレータ１５と、昇圧回路１６と、スイッチＳＷ１〜ＳＷ３とを備えている。レギュレータ１５には電源回路１８又は昇圧回路１６の何れか一方から直流電圧が入力される。レギュレータ１５は、入力電圧の変動を抑制して制御回路７及びＬＥＤ５ａ，５ｂ，９ａに出力する。尚、レギュレータ１５と電源回路１８との間、及びレギュレータ１５と昇圧回路１６との間にはそれぞれ、例えば逆流防止用のダイオード（図示せず）が接続されている。   The lighting circuit 6 includes a regulator 15, a booster circuit 16, and switches SW1 to SW3. A DC voltage is input to the regulator 15 from either the power supply circuit 18 or the booster circuit 16. The regulator 15 suppresses the fluctuation of the input voltage and outputs it to the control circuit 7 and the LEDs 5a, 5b, 9a. For example, a backflow preventing diode (not shown) is connected between the regulator 15 and the power supply circuit 18 and between the regulator 15 and the booster circuit 16.

点灯回路６には、照明用のＬＥＤ５ａ，５ｂと、電池１２の残容量の低下を報知するために設けられたＬＥＤ９ａがそれぞれ接続されている。ＬＥＤ５ａはスイッチＳＷ１を介してレギュレータ１５に接続している。同様に、ＬＥＤ５ｂはスイッチＳＷ２を介してレギュレータ１５に接続していて、ＬＥＤ９ａはスイッチＳＷ３を介してレギュレータ１５に接続している。スイッチＳＷ１〜ＳＷ３はそれぞれ制御回路７によってオン／オフ操作される。   The lighting circuit 6 is connected to LEDs 5a and 5b for illumination and an LED 9a provided for notifying the decrease in the remaining capacity of the battery 12. The LED 5a is connected to the regulator 15 via the switch SW1. Similarly, the LED 5b is connected to the regulator 15 via the switch SW2, and the LED 9a is connected to the regulator 15 via the switch SW3. The switches SW1 to SW3 are turned on / off by the control circuit 7, respectively.

昇圧回路１６は、例えば昇圧チョッパ回路等で構成され、電池１２の電圧を昇圧してレギュレータ１５に出力する。昇圧回路１６の動作は、制御回路７から入力される信号ＳＮ２によって制御される。   The booster circuit 16 is composed of, for example, a boost chopper circuit, and boosts the voltage of the battery 12 and outputs the boosted voltage to the regulator 15. The operation of the booster circuit 16 is controlled by a signal SN2 input from the control circuit 7.

電池１２は、例えばマンガン乾電池やアルカリ・マンガン乾電池等の単三型の一次電池であり、昇圧回路１６の１次側に接続されている。   The battery 12 is an AA type primary battery such as a manganese dry battery or an alkaline / manganese dry battery, and is connected to the primary side of the booster circuit 16.

照明器具１は、電池１２の出力電圧を測定する電圧測定回路１４を備える。電圧測定回路１４は、所定期間毎に電池１２の電圧をＡ／Ｄ変換し、制御回路７に出力する。   The luminaire 1 includes a voltage measurement circuit 14 that measures the output voltage of the battery 12. The voltage measurement circuit 14 performs A / D conversion on the voltage of the battery 12 every predetermined period and outputs it to the control circuit 7.

制御回路７は、例えばマイクロコンピュータを備えていて、組み込みのプログラムを実行することによって、点灯回路６の制御が実現される。制御回路７の電源端子ＶＤＤには、レギュレータ１５から直流電圧が入力されている。   The control circuit 7 includes, for example, a microcomputer, and the lighting circuit 6 is controlled by executing a built-in program. A DC voltage is input from the regulator 15 to the power supply terminal VDD of the control circuit 7.

制御回路７には、切替スイッチ３１と、点灯スイッチ８（操作部）と、明るさセンサ３ａ（照度変換部）が接続されている。   The control circuit 7 is connected with a changeover switch 31, a lighting switch 8 (operation unit), and a brightness sensor 3a (illuminance conversion unit).

明るさセンサ３ａは、周囲の明るさを検知する素子（例えば、フォトダイオード、フォトトランジスタ等）で構成される。明るさセンサ３ａの出力電流は周囲の明るさに応じて変化する。   The brightness sensor 3a is configured by an element (for example, a photodiode, a phototransistor, or the like) that detects ambient brightness. The output current of the brightness sensor 3a changes according to the surrounding brightness.

切替スイッチ３１は、左右方向に移動自在なスライドスイッチであり、ナイトライト機能を有効にするか否かを切り替えるためのスイッチである。切替スイッチ３１がナイトライト機能を有効にするように設定された状態で、明るさセンサ３ａの出力電流から求めた周囲の明るさが所定値よりも暗くなると、制御回路７はスイッチＳＷ１をオン状態にしてＬＥＤ５ａを点灯させる。切替スイッチ３１がナイトライト機能を有効にするように設定された状態で、明るさセンサ３ａの出力電流から求めた周囲の明るさが所定値よりも明るくなると、制御回路７はスイッチＳＷ１をオフ状態にしてＬＥＤ５ａを消灯させる。尚、ＬＥＤ５ａの点灯／消灯を切り替えるしきい値（上記の所定値）にヒステリシスを設けてもよい。   The changeover switch 31 is a slide switch that is movable in the left-right direction, and is a switch for switching whether or not to enable the night light function. When the changeover switch 31 is set to enable the night light function and the ambient brightness obtained from the output current of the brightness sensor 3a becomes darker than a predetermined value, the control circuit 7 turns on the switch SW1. The LED 5a is turned on. When the changeover switch 31 is set to enable the night light function and the ambient brightness obtained from the output current of the brightness sensor 3a becomes brighter than a predetermined value, the control circuit 7 turns off the switch SW1. Then, the LED 5a is turned off. Hysteresis may be provided for a threshold value (the above predetermined value) for switching on / off of the LED 5a.

一方、切替スイッチ３１がナイトライト機能を無効にするように設定された状態では、明るさセンサ３ａの出力電流から求めた周囲の明るさが所定値よりも暗くなっても、制御回路７はスイッチＳＷ１のオフ状態を維持し続ける。   On the other hand, in a state where the changeover switch 31 is set so as to disable the night light function, even if the ambient brightness obtained from the output current of the brightness sensor 3a becomes darker than a predetermined value, the control circuit 7 Continue to keep SW1 off.

次に、照明器具１の構造について図１〜図２を参照して説明する。   Next, the structure of the luminaire 1 will be described with reference to FIGS.

器体２は、図２（ａ）（ｂ）に示すように、前面側が開口した矩形箱状のボディ２２と、前面が矩形状に形成されてボディ２２の前面の開口部を覆うカバー２１とを備える。   As shown in FIGS. 2 (a) and 2 (b), the body 2 includes a rectangular box-shaped body 22 having an open front side, and a cover 21 having a front surface formed in a rectangular shape and covering the opening on the front surface of the body 22. Is provided.

カバー２１の正面における上側部分には、カバー２１の下側部位よりも前側に突出している張出部２１ａが形成されている。カバー２１における張出部２１ａを除く前面部分には、矩形状に開口した開口部２１ｃが設けられていて、開口部２１ｃを塞ぐように導光板１３がカバー２１に取り付けられている。   An overhang portion 21 a that protrudes to the front side of the lower portion of the cover 21 is formed on the upper portion of the front surface of the cover 21. An opening 21c that opens in a rectangular shape is provided on the front surface portion of the cover 21 excluding the protruding portion 21a, and the light guide plate 13 is attached to the cover 21 so as to close the opening 21c.

導光板１３は、前面が矩形の光取り出し部１３ａ（出射面）と、光取り出し部１３ａの上面から上側に突き出るように形成されて張出部２１ａの内側に挿入される光入射部１３ｂ（入射面）とを備えている。光入射部１３ｂの入射面（本実施形態では上側面）は、それぞれのＬＥＤ５ａ，５ｂに対向するように設けられており、ＬＥＤ５ａ，５ｂから光入射部１３ｂの入射面に放射された光を光取り出し部１３ａに導く。光取り出し部１３ａは、張出部２１ａの前面と面一になるように形成されていて、開口部２１ｃから外部に露出している。光取り出し部１３ａの背面には光取り出し部１３ａ内を通る光を拡散する光拡散部１９が設けられていて、光拡散部１９で拡散した光が光取り出し部１３ａの前面から外部に放射される。   The light guide plate 13 has a light extraction portion 13a (outgoing surface) having a rectangular front surface and a light incident portion 13b (incident) that is formed so as to protrude upward from the upper surface of the light extraction portion 13a and is inserted inside the protruding portion 21a. Surface). The incident surface (upper side surface in the present embodiment) of the light incident portion 13b is provided so as to face the respective LEDs 5a and 5b, and the light emitted from the LEDs 5a and 5b to the incident surface of the light incident portion 13b is light. Guide to the take-out part 13a. The light extraction portion 13a is formed to be flush with the front surface of the overhang portion 21a, and is exposed to the outside from the opening portion 21c. A light diffusing unit 19 for diffusing light passing through the light extracting unit 13a is provided on the back surface of the light extracting unit 13a, and the light diffused by the light diffusing unit 19 is radiated to the outside from the front surface of the light extracting unit 13a. .

張出部２１ａの内側には、図１（ａ）（ｂ）に示すようにサブ基板５１が配置されている。サブ基板５１は、器体２の上面に平行するように器体２内部の上面付近に取り付けられていて、メイン基板１０に電気的に接続されている。   As shown in FIGS. 1A and 1B, a sub-board 51 is disposed inside the overhanging portion 21a. The sub board 51 is attached near the upper surface inside the container body 2 so as to be parallel to the upper surface of the container body 2, and is electrically connected to the main board 10.

サブ基板５１には、照明用のＬＥＤ５ａ，５ｂと、報知用のＬＥＤ９ａと、明るさセンサ３ａと、切替スイッチ３１が実装されている。ＬＥＤ９ａはサブ基板５１の上面の一端側（本実施形態では左側）に実装されている。明るさセンサ３ａはサブ基板５１の上面の他端側（本実施形態では右側）に実装されている。切替スイッチ３１はサブ基板５１の上面中央に実装されていて、ＬＥＤ５ａ，５ｂはそれぞれサブ基板５１の下側表面に実装されている。ＬＥＤ５ａは、ナイトライトとして使用される場合に発光し、ＬＥＤ５ａの発光色はおよそ２７００〜３０００Ｋ程度の電球色である。ＬＥＤ５ｂはハンディライトとして使用される場合に発光し、ＬＥＤ５ｂの発光色はおよそ４０００Ｋ程度の白色である。   On the sub board 51, LEDs 5a and 5b for illumination, LED 9a for notification, brightness sensor 3a, and changeover switch 31 are mounted. The LED 9a is mounted on one end side (left side in the present embodiment) of the upper surface of the sub-board 51. The brightness sensor 3a is mounted on the other end side (right side in the present embodiment) of the upper surface of the sub-board 51. The changeover switch 31 is mounted at the center of the upper surface of the sub-board 51, and the LEDs 5 a and 5 b are mounted on the lower surface of the sub-board 51, respectively. The LED 5a emits light when used as a night light, and the emission color of the LED 5a is a light bulb color of about 2700 to 3000K. The LED 5b emits light when used as a handy light, and the light emission color of the LED 5b is white of about 4000K.

器体２の上面には、図１（ｃ）に示すように、透光窓３ｂ，９ｂと、切替スイッチ３１の操作部に被せられた切替つまみ３２を露出させるための孔２１ｂが設けられている。   As shown in FIG. 1 (c), a hole 21 b is provided on the upper surface of the container body 2 to expose the light transmission windows 3 b and 9 b and the switching knob 32 covered on the operation part of the changeover switch 31. Yes.

透光窓９ｂは、例えばアクリル樹脂等の透光性材料で形成され、カバー２１の上面においてＬＥＤ９ａに対向する部位に設けられていて器体２の上側に露出している。ＬＥＤ９ａが点灯すると、ＬＥＤ９ａの光は透光窓９ｂを透過してカバー２１の上面から外部に放射される。そのため、プラグ４がコンセントに接続された状態で、電池１２の残容量が低下してＬＥＤ９ａが点灯すると、透光窓９ｂからＬＥＤ９ａの光が放射される。本実施形態では、ＬＥＤ９ａと透光窓９ｂとで点灯部９が構成されている。   The translucent window 9b is formed of a translucent material such as acrylic resin, for example, and is provided in a portion facing the LED 9a on the upper surface of the cover 21 and exposed above the body 2. When the LED 9a is turned on, the light of the LED 9a is transmitted through the transparent window 9b and radiated from the upper surface of the cover 21 to the outside. Therefore, when the remaining capacity of the battery 12 is reduced and the LED 9a is turned on with the plug 4 connected to the outlet, the light of the LED 9a is emitted from the light transmitting window 9b. In this embodiment, the lighting part 9 is comprised by LED9a and the translucent window 9b.

透光窓３ｂは、例えばアクリル樹脂等の透光性材料で形成され、カバー２１の上面における明るさセンサ３ａに対向する部位に設けられていて、器体２の上側に露出している。器体２の周囲の光が透光窓３ｂを透過して明るさセンサ３ａに入射すると、明るさセンサ３ａの出力電流は周囲の明るさに応じて変化する。   The translucent window 3 b is formed of a translucent material such as acrylic resin, for example, is provided in a portion facing the brightness sensor 3 a on the upper surface of the cover 21, and is exposed above the body 2. When light around the body 2 passes through the transparent window 3b and enters the brightness sensor 3a, the output current of the brightness sensor 3a changes according to the ambient brightness.

切替つまみ３２は、切替スイッチ３１の操作部を覆った状態で、器体２の上面の孔２１ｂから外部に露出するように設けられている。切替つまみ３２を左右方向にスライド移動させることにより、切替スイッチ３１が切り替えられる。切替つまみ３２がスライド方向の一端側（本実施形態では図１（ａ）の右側）に設定されているとナイトライト機能が有効になり、切替つまみ３２がスライド方向の他端側（本実施形態では図１（ａ）の左側）に設定されているとナイトライト機能が無効になる。   The switching knob 32 is provided so as to be exposed to the outside through the hole 21 b on the upper surface of the container body 2 while covering the operation portion of the changeover switch 31. The selector switch 31 is switched by sliding the selector knob 32 in the left-right direction. When the switching knob 32 is set at one end side in the sliding direction (right side in FIG. 1A in this embodiment), the night light function is enabled, and the switching knob 32 is at the other end side in the sliding direction (this embodiment). Then, if it is set to the left side of FIG. 1A, the night light function is disabled.

器体２における左右方向の一方の側面（本実施形態では器体２の左側面）には、点灯スイッチ８が設けられている。点灯スイッチ８は、商用電源１７から電力が供給されていない状態でＬＥＤ５ｂを点灯／消灯させるスイッチである。点灯スイッチ８は、例えばプッシュスイッチで構成される。商用電源１７から電力が供給されていない状態で、点灯スイッチ８を一回押すごとに制御回路７がＬＥＤ５ｂの点灯／消灯を切り替える。尚、点灯スイッチ８は、プッシュスイッチに限定されず、切替後の状態が保持される適宜の種類のスイッチでよい。   On one side surface of the container body 2 in the left-right direction (in this embodiment, the left side surface of the container body 2), a lighting switch 8 is provided. The lighting switch 8 is a switch for turning on / off the LED 5b in a state where power is not supplied from the commercial power source 17. The lighting switch 8 is constituted by a push switch, for example. The control circuit 7 switches on / off of the LED 5b each time the lighting switch 8 is pressed in a state where power is not supplied from the commercial power source 17. The lighting switch 8 is not limited to a push switch, and may be an appropriate type of switch that maintains the state after switching.

ボディ２２の背面にはプラグ４が取り付けられている。プラグ４は、プラグ４の先端部がボディ２２の背面方向（図２（ａ）参照）を向く位置と、上面方向（図１（ｂ）参照）を向く位置との間で回転自在に支持されている。プラグ４を商用電源１７のコンセント（図示せず）から引き抜いた状態で、プラグ４の先端部が上面方向を向くようにプラグ４を図２（ａ）の矢印Ａ１方向に回転させると、ボディ２２に設けた溝４１内にプラグ４を収納することができる。   A plug 4 is attached to the back surface of the body 22. The plug 4 is supported so as to be rotatable between a position where the tip end portion of the plug 4 faces the back direction of the body 22 (see FIG. 2A) and a position where the front end direction of the plug 4 faces (see FIG. 1B). ing. When the plug 4 is rotated in the direction of arrow A1 in FIG. 2A when the plug 4 is pulled out from the outlet (not shown) of the commercial power supply 17 so that the tip of the plug 4 faces the top surface, the body 22 The plug 4 can be accommodated in the groove 41 provided in.

器体２の背面の下側には、図２（ｃ）に示すように、電池１２を収納する収納凹部２３ａが設けられている。この収納凹部２３ａは、ボディ２２に着脱自在に取り付けられる蓋２３ｂによって塞がれる。電池１２は、入手性のよい一次電池であり、電池１２の長手方向が器体２の左右方向に沿うように収納凹部２３ａに収納される。   On the lower side of the back surface of the container body 2, as shown in FIG. 2 (c), a storage recess 23 a for storing the battery 12 is provided. The housing recess 23 a is closed by a lid 23 b that is detachably attached to the body 22. The battery 12 is a readily available primary battery, and is housed in the housing recess 23 a so that the longitudinal direction of the battery 12 is along the left-right direction of the container 2.

器体２の内側には、図１（ｂ）に示すように、メイン基板１０が収納されている。メイン基板１０には、点灯回路６と、制御回路７と、電源回路１８と、停電検知回路１１と、電圧測定回路１４を構成する回路部品が実装されている。メイン基板１０は、サブ基板５１と、電池１２と、プラグ４にそれぞれ電気的に接続している。   As shown in FIG. 1B, the main board 10 is accommodated inside the container body 2. Circuit components constituting the lighting circuit 6, the control circuit 7, the power supply circuit 18, the power failure detection circuit 11, and the voltage measurement circuit 14 are mounted on the main board 10. The main board 10 is electrically connected to the sub board 51, the battery 12, and the plug 4, respectively.

ここで、本実施形態の照明器具１の動作を説明する。   Here, operation | movement of the lighting fixture 1 of this embodiment is demonstrated.

まず、切替つまみ３２がナイトライト機能を有効にする位置に切り替えられている場合の動作を説明する。   First, an operation when the switching knob 32 is switched to a position that enables the night light function will be described.

器体２は商用電源１７のコンセント（図示せず）にプラグ４を接続した状態で、壁面（図示せず）に取り付けられる。電源回路１８は、商用電源１７から供給される交流電圧を所定の直流電圧に変換して点灯回路６に出力する。停電検知回路１１は、電源回路１８の一次側に入力される電圧を監視し、商用電源１７が供給されている状態では、制御回路７に信号ＳＮ１を出力する。制御回路７は、信号ＳＮ１が入力されると昇圧回路１６の昇圧動作を停止状態にする。制御回路７及び点灯回路６はそれぞれ、商用電源１７から供給される電力で動作する。   The container 2 is attached to a wall surface (not shown) in a state where the plug 4 is connected to an outlet (not shown) of the commercial power source 17. The power supply circuit 18 converts the AC voltage supplied from the commercial power supply 17 into a predetermined DC voltage and outputs it to the lighting circuit 6. The power failure detection circuit 11 monitors the voltage input to the primary side of the power supply circuit 18 and outputs the signal SN1 to the control circuit 7 when the commercial power supply 17 is supplied. When the signal SN1 is input, the control circuit 7 stops the boosting operation of the boosting circuit 16. Each of the control circuit 7 and the lighting circuit 6 operates with electric power supplied from the commercial power supply 17.

商用電源１７から電力が供給されている状態で、明るさセンサ３ａの出力電流から求めた周囲の明るさが所定値よりも暗くなると、制御回路７はスイッチＳＷ１をオン状態にしてＬＥＤ５ａを自動的に点灯させる。ＬＥＤ５ａが光入射部１３ｂに放射した光は光拡散部１９で拡散され、光取り出し部１３ａから外部に放射される。導光板１３の光取り出し部１３ａから放射された光が照明器具１の周囲の床面（図示せず）を照らす。ＬＥＤ５ａの発光色は電球色であるため、夜間に床面を照らしていてもまぶしく感じにくい。一方、商用電源１７から電力が供給されている状態で、明るさセンサ３ａの出力電流から求めた周囲の明るさが所定値よりも明るくなると、制御回路７はスイッチＳＷ１をオフ状態にしてＬＥＤ５ａを自動的に消灯させる。   If the ambient brightness obtained from the output current of the brightness sensor 3a becomes darker than a predetermined value while power is supplied from the commercial power supply 17, the control circuit 7 turns on the switch SW1 to automatically turn on the LED 5a. Turn on. The light emitted from the LED 5a to the light incident portion 13b is diffused by the light diffusing portion 19 and emitted from the light extraction portion 13a to the outside. The light emitted from the light extraction portion 13a of the light guide plate 13 illuminates the floor surface (not shown) around the luminaire 1. Since the emission color of the LED 5a is a light bulb color, it is difficult to feel dazzling even if the floor surface is illuminated at night. On the other hand, when the ambient brightness obtained from the output current of the brightness sensor 3a becomes brighter than a predetermined value while power is supplied from the commercial power supply 17, the control circuit 7 turns off the switch SW1 and turns on the LED 5a. Turn off automatically.

一方、切替スイッチ３１がナイトライト機能を無効にする位置に切り替えられている場合、制御回路７は、明るさセンサ３ａの出力電流から求めた周囲の明るさが所定値よりも暗くなってもスイッチＳＷ１のオフ状態を維持し、ＬＥＤ５ａの消灯状態を維持する。   On the other hand, when the selector switch 31 is switched to the position where the night light function is disabled, the control circuit 7 switches the switch even when the ambient brightness obtained from the output current of the brightness sensor 3a becomes darker than a predetermined value. SW1 is kept off, and the LED 5a is kept off.

次に、電池１２が供給する電力で動作する場合の照明器具１の動作について説明する。   Next, operation | movement of the lighting fixture 1 in the case of operate | moving with the electric power which the battery 12 supplies is demonstrated.

商用電源１７のコンセント（図示せず）からプラグ４を引き抜くか、又は停電が発生すると、停電検知回路１１は、信号ＳＮ１の出力を停止する。制御回路７は、停電検知回路１１から信号ＳＮ１が入力されなくなると、昇圧回路１６に昇圧動作を行わせ、昇圧回路１６からレギュレータ１５に所定の直流電圧を出力させる。制御回路７及び点灯回路６は、電池１２から供給される電力で動作する。制御回路７は昇圧回路１６を動作させた後、スイッチＳＷ２をオン状態にしてＬＥＤ５ｂを点灯させる。そのため、照明器具１がコンセントに接続された状態で停電が発生すると、ＬＥＤ５ｂが自動点灯し、導光板１３の光取り出し部１３ａから放射された光が照射方向に照射される。ＬＥＤ５ｂの発光色は白色であるため、ハンディライトとして照明器具１を使用すると、視認性がよくなり、周囲の状況をより認識しやすくなる。   When the plug 4 is pulled out from an outlet (not shown) of the commercial power supply 17 or when a power failure occurs, the power failure detection circuit 11 stops outputting the signal SN1. When the signal SN1 is no longer input from the power failure detection circuit 11, the control circuit 7 causes the booster circuit 16 to perform a boost operation and causes the booster circuit 16 to output a predetermined DC voltage to the regulator 15. The control circuit 7 and the lighting circuit 6 operate with electric power supplied from the battery 12. After operating the booster circuit 16, the control circuit 7 turns on the switch SW2 to light the LED 5b. Therefore, when a power failure occurs with the lighting fixture 1 connected to the outlet, the LED 5b is automatically turned on, and the light emitted from the light extraction portion 13a of the light guide plate 13 is irradiated in the irradiation direction. Since the light emission color of the LED 5b is white, when the lighting fixture 1 is used as a handy light, the visibility is improved and the surrounding situation is more easily recognized.

電池１２から供給される電力でＬＥＤ５ｂが点灯している状態で、点灯スイッチ８がオフ操作されると、制御回路７はスイッチＳＷ２をオフ状態にしてＬＥＤ５ｂを消灯させる。同様に、電池１２から供給される電力で動作している状態で点灯スイッチ８がオン操作されると、制御回路７は、スイッチＳＷ２をオン状態にしてＬＥＤ５ｂを点灯させて導光板１３の光取り出し部１３ａから光を放射させる。   When the lighting switch 8 is turned off while the LED 5b is lit with the power supplied from the battery 12, the control circuit 7 turns off the switch 5 by turning off the switch SW2. Similarly, when the lighting switch 8 is turned on while operating with the power supplied from the battery 12, the control circuit 7 turns on the switch SW2 to light the LED 5b and extract the light from the light guide plate 13. Light is emitted from the portion 13a.

ところで、制御回路７及び点灯回路６がそれぞれ商用電源１７から供給される電力で動作していても、例えば自然放電等により電池１２の残容量は徐々に低下する。電圧測定回路１４が出力する電池１２の電圧値が所定の電圧値を下回ると、制御回路７は、電池１２の残容量が報知レベルである所定容量を下回ったと判断し、スイッチＳＷ３をオン状態にしてＬＥＤ９ａを点灯させる。ＬＥＤ９ａが点灯すると、ＬＥＤ９ａの光は透光窓９ｂを透過して器体２の上側から外部に放射される。使用者は、器体２の上側から見てＬＥＤ９ａの光を認識しやすいため、電池の残容量の低下を認識しやすくなり、内蔵している電池１２の電池交換が必要であることを把握できる。   By the way, even if the control circuit 7 and the lighting circuit 6 are each operated with electric power supplied from the commercial power supply 17, the remaining capacity of the battery 12 gradually decreases due to, for example, natural discharge. When the voltage value of the battery 12 output from the voltage measurement circuit 14 falls below a predetermined voltage value, the control circuit 7 determines that the remaining capacity of the battery 12 has fallen below a predetermined capacity that is a notification level, and turns on the switch SW3. The LED 9a is turned on. When the LED 9a is turned on, the light of the LED 9a is transmitted through the light transmission window 9b and radiated to the outside from the upper side of the body 2. Since the user can easily recognize the light of the LED 9a when viewed from the upper side of the container body 2, the user can easily recognize the decrease in the remaining capacity of the battery, and can grasp that the battery 12 of the built-in battery 12 needs to be replaced. .

照明器具１が電池１２から供給される電力で動作する場合でも、電池１２の出力電圧が所定電圧を下回ると制御回路７がＬＥＤ９ａを点灯させてもよい。電池１２の電力消費をより抑えながらＬＥＤ９ａを点灯させるために、制御回路７は、例えばＬＥＤ９ａを所定期間点灯させた後にＬＥＤ９ａを消灯させたり、ＬＥＤ９ａを所定周期で点滅させたりしてもよい。   Even when the luminaire 1 operates with power supplied from the battery 12, the control circuit 7 may light the LED 9a when the output voltage of the battery 12 falls below a predetermined voltage. In order to turn on the LED 9a while further reducing the power consumption of the battery 12, the control circuit 7 may turn on the LED 9a for a predetermined period and turn off the LED 9a, or blink the LED 9a at a predetermined cycle, for example.

以上説明したように、本実施形態の照明器具１は、プラグ４と、照明負荷（ＬＥＤ５ａ，５ｂ）と、電池１２と、点灯回路６と、点灯スイッチ８（操作部）と、導光板１３と、明るさセンサ３ａ（照度変換部）と、制御回路７（制御部）と、器体２とを備える。プラグ４は、商用電源１７のコンセントに着脱自在に接続される。点灯回路６は、照明負荷（ＬＥＤ５ａ，５ｂ）を点灯させる。点灯スイッチ８（操作部）は、照明負荷（ＬＥＤ５ｂ）を点灯又は消灯させるために操作される。導光板１３は、入射面（光入射部１３ｂの上側面）に入射した照明負荷（ＬＥＤ５ａ，５ｂ）の放射光を導光して出射面（光取り出し部１３ａの前面）から外部に放射する。明るさセンサ３ａ（照度変換部）は、周囲の明るさに応じて出力の大きさ（電流値）が変化する。制御回路７（制御部）は、明るさセンサ３ａ（照度変換部）の出力から求めた明るさが所定値よりも暗くなると、コンセントからプラグ４を介して供給される電力で照明負荷（ＬＥＤ５ａ）を点灯させるように点灯回路６を制御する。制御回路７（制御部）は、点灯スイッチ８（操作部）を用いて点灯操作が行われると電池１２から供給される電力で照明負荷（ＬＥＤ５ｂ）を点灯させるように点灯回路６を制御する。器体２は、プラグ４、点灯回路６、点灯スイッチ８（操作部）、導光板１３、明るさセンサ３ａ（照度変換部）、及び制御回路７（制御部）を有し、導光板１３の出射面（光取り出し部１３ａの前面）を一面（前面）から露出させる。導光板１３の出射面（光取り出し部１３ａの前面）は、一面（器体２の前面）の半分以上の面積を有する。制御回路７は、電池１２から供給される電力で点灯する照明負荷（ＬＥＤ５ｂ）の色温度が、商用電源１７から供給される電力で点灯する照明負荷（ＬＥＤ５ａ）の色温度よりも高くなるように点灯回路６を制御する。   As described above, the lighting fixture 1 of the present embodiment includes the plug 4, the lighting load (LEDs 5a and 5b), the battery 12, the lighting circuit 6, the lighting switch 8 (operation unit), and the light guide plate 13. , A brightness sensor 3 a (illuminance conversion unit), a control circuit 7 (control unit), and a container 2. The plug 4 is detachably connected to the outlet of the commercial power source 17. The lighting circuit 6 lights the illumination load (LEDs 5a and 5b). The lighting switch 8 (operation unit) is operated to turn on or off the lighting load (LED 5b). The light guide plate 13 guides the radiated light of the illumination load (LEDs 5a and 5b) incident on the incident surface (the upper side surface of the light incident portion 13b) and radiates the light from the emission surface (front surface of the light extraction portion 13a) to the outside. The brightness sensor 3a (illuminance conversion unit) changes the output magnitude (current value) according to the ambient brightness. When the brightness obtained from the output of the brightness sensor 3a (illuminance conversion unit) becomes darker than a predetermined value, the control circuit 7 (control unit) uses the power supplied from the outlet via the plug 4 to illuminate the load (LED 5a). The lighting circuit 6 is controlled so as to light up. The control circuit 7 (control unit) controls the lighting circuit 6 so that the lighting load (LED 5b) is lit by the power supplied from the battery 12 when the lighting operation is performed using the lighting switch 8 (operation unit). The body 2 includes a plug 4, a lighting circuit 6, a lighting switch 8 (operation unit), a light guide plate 13, a brightness sensor 3 a (illuminance conversion unit), and a control circuit 7 (control unit). The emission surface (front surface of the light extraction portion 13a) is exposed from one surface (front surface). The exit surface of the light guide plate 13 (the front surface of the light extraction portion 13a) has an area that is at least half that of one surface (the front surface of the body 2). The control circuit 7 is configured so that the color temperature of the lighting load (LED 5b) that is lit by the power supplied from the battery 12 is higher than the color temperature of the lighting load (LED 5a) that is lit by the power supplied from the commercial power source 17. The lighting circuit 6 is controlled.

導光板１３は、器体２の前面における半分以上の面積を有し、器体２の前面に露出して照明器具１の周囲を照らすので、照明器具１をハンディライトとして使用した際に、より広い範囲を照らすことができる。また、照明器具１をナイトライトとして使用するときの放射光の色温度に比べて、ハンディライトとして使用するときの放射光の色温度が高いので、視認性がよくなり、ハンディライトとして使いやすい。   The light guide plate 13 has an area of more than half of the front surface of the container body 2 and is exposed to the front surface of the container body 2 so as to illuminate the surroundings of the luminaire 1, so that when the luminaire 1 is used as a handy light, Can illuminate a wide range. Moreover, since the color temperature of the emitted light when using it as a handy light is high compared with the color temperature of the emitted light when using the lighting fixture 1 as a nightlight, visibility improves and it is easy to use as a handy light.

本実施形態の照明器具１において、電池１２から供給される電力で点灯する照明負荷（ＬＥＤ５ｂ）の放射光は白色であり、商用電源１７から供給される電力で点灯する照明負荷（ＬＥＤ５ａ）の放射光は、電球色であることも好ましい。照明器具１をハンディライトとして使用すると、導光板１３から放射された白色の放射光がより広い範囲を照らすので視認性がよくなる。照明器具１をナイトライトとして使用すると、導光板１３から電球色の放射光が放射されるので、夜間に床面を照らしていてもまぶしく感じにくい。   In the lighting fixture 1 of this embodiment, the radiated light of the lighting load (LED 5 b) that is lit by the power supplied from the battery 12 is white, and the radiation of the lighting load (LED 5 a) that is lit by the power supplied from the commercial power source 17. It is also preferred that the light is a light bulb color. When the luminaire 1 is used as a handy light, the white radiated light emitted from the light guide plate 13 illuminates a wider range, thereby improving visibility. When the lighting fixture 1 is used as a night light, light bulb-colored radiated light is emitted from the light guide plate 13, so that it is difficult to feel dazzling even when the floor surface is illuminated at night.

本実施形態における制御回路７は、電池１２から供給される電力でＬＥＤ５ｂが点灯するようにスイッチＳＷ２を制御し、商用電源１７から供給される電力でＬＥＤ５ａが点灯するようにスイッチＳＷ１を制御して、色温度の異なる２つの放射光を実現している。   The control circuit 7 in the present embodiment controls the switch SW2 so that the LED 5b is lit with the power supplied from the battery 12, and controls the switch SW1 so that the LED 5a is lit with the power supplied from the commercial power source 17. Realizes two synchrotron radiations with different color temperatures.

本実施形態における照明負荷は２つのＬＥＤ５ａ，５ｂで構成されているが、ＬＥＤは２つに限定されず、色温度の異なる２つの放射光をそれぞれ放射できる構成であれば、ＬＥＤは１つでも３つ以上でもよい。また照明負荷の種類もＬＥＤに限定されず、色温度の異なる２つの放射光をそれぞれ放射できる適宜の構成でよい。さらに、色温度の異なる２つの放射光を切り替える方法は、照明負荷のスイッチをオン／オフすることに限定されず、適宜の切替方法でよい。   Although the illumination load in this embodiment is composed of two LEDs 5a and 5b, the number of LEDs is not limited to two, and any one LED can be used as long as it can emit two radiated lights having different color temperatures. Three or more may be sufficient. Moreover, the kind of illumination load is not limited to LED, The appropriate structure which can each radiate | emit two emitted light from which color temperature differs may be sufficient. Furthermore, the method of switching between two radiated lights having different color temperatures is not limited to turning on / off the illumination load switch, and may be an appropriate switching method.

近年、一次電池の性能が向上し長寿命の一次電池が製品化されているので、本実施形態の照明器具１では、二次電池に比べて入手性の良好な一次電池を電池１２に採用している。ただし一次電池である電池１２を充電することはできないため、電池１２の残容量は自然放電等で徐々に低下する。そのため、電池１２の残容量が低下していることに使用者が気付かない可能性があり、ハンディライトとして照明器具１を使用する際に、照明器具１を十分に使用できない可能性がある。本実施形態の照明器具１は、点灯部９を点灯させて電池１２の残容量の低下を報知するので、使用者は電池１２の残容量の低下を認識しやすくなる。   In recent years, the performance of primary batteries has been improved and long-life primary batteries have been commercialized. Therefore, in the lighting fixture 1 of this embodiment, primary batteries that are more readily available than secondary batteries are used for the batteries 12. ing. However, since the battery 12, which is a primary battery, cannot be charged, the remaining capacity of the battery 12 gradually decreases due to natural discharge or the like. Therefore, the user may not be aware that the remaining capacity of the battery 12 is reduced, and there is a possibility that the lighting fixture 1 cannot be used sufficiently when the lighting fixture 1 is used as a handy light. Since the lighting fixture 1 of this embodiment lights the lighting part 9 and alert | reports the fall of the remaining capacity of the battery 12, it becomes easy for a user to recognize the fall of the remaining capacity of the battery 12. FIG.

本実施形態における点灯部９はＬＥＤ９ａ及び透光窓９ｂで構成されているが、器体２の上側から光が放射される構成であればよく、例えばサブ基板５１に実装された砲弾型のＬＥＤの先端部分が器体２の上側に露出していてもよい。   Although the lighting part 9 in this embodiment is comprised by LED9a and the translucent window 9b, what is necessary is just the structure from which light is radiated | emitted from the upper side of the container 2, for example, the bullet-type LED mounted in the sub board | substrate 51 May be exposed on the upper side of the body 2.

本実施形態における明るさセンサ３ａは、照度に応じて電流値が変化する素子で構成されているが、例えば照度に応じて抵抗値が変化するフォトレジスタ等でもよい。   The brightness sensor 3a in the present embodiment is composed of an element whose current value changes according to the illuminance, but may be a photoresistor whose resistance value changes according to the illuminance, for example.

本実施形態における電池１２は単三型の一次電池であるが、単三型以外の型式でもよいし、充電済みの二次電池（例えばニッケル・水素充電池等）でもよい。   The battery 12 in the present embodiment is an AA type primary battery, but may be a type other than the AA type or a charged secondary battery (for example, a nickel-hydrogen rechargeable battery).

本実施形態における電圧測定回路１４は、電池１２の残容量を検知するために出力電圧を測定しているが、出力電圧の測定に限定されず、電池の残容量を検知できる適宜の方法でよい。   The voltage measurement circuit 14 in this embodiment measures the output voltage in order to detect the remaining capacity of the battery 12, but is not limited to the measurement of the output voltage, and may be an appropriate method that can detect the remaining capacity of the battery. .

１ 照明器具
１０ メイン基板
１１ 停電検知回路
１２ 電池
１３ 導光板
１３ａ 光取り出し部（出射面）
１３ｂ 光入射部（入射面）
１４ 電圧測定回路
１５ レギュレータ
１６ 昇圧回路
１７ 商用電源
１８ 電源回路
２ 器体
２１ カバー
２１ａ 張出部
２２ ボディ
２３ｂ 蓋
３１ 切替スイッチ
３ａ 明るさセンサ（照度変換部）
３ｂ 透光窓
４ プラグ
５ａ，５ｂ ＬＥＤ（照明負荷）
５１ サブ基板
６ 点灯回路
７ 制御回路（制御部）
８ 点灯スイッチ（操作部）
９ 点灯部
９ａ ＬＥＤ
９ｂ 透光窓
ＳＮ１，ＳＮ２ 信号
ＳＷ１〜ＳＷ３ スイッチ DESCRIPTION OF SYMBOLS 1 Lighting fixture 10 Main board 11 Power failure detection circuit 12 Battery 13 Light guide plate 13a Light extraction part (output surface)
13b Light incident part (incident surface)
DESCRIPTION OF SYMBOLS 14 Voltage measurement circuit 15 Regulator 16 Booster circuit 17 Commercial power supply 18 Power supply circuit 2 Body 21 Cover 21a Overhang part 22 Body 23b Cover 31 Changeover switch 3a Brightness sensor (illuminance conversion part)
3b Translucent window 4 Plug 5a, 5b LED (lighting load)
51 Sub-board 6 Lighting circuit 7 Control circuit (control unit)
8 Lighting switch (operation unit)
9 Lighting part 9a LED
9b Translucent window SN1, SN2 signal SW1-SW3 switch

Claims (3)

商用電源のコンセントに着脱自在に接続されるプラグと、
放射光が第１色温度である第１照明負荷と、放射光が前記第１色温度とは異なる第２色温度である第２照明負荷と、を点灯させる点灯回路と、
前記第２照明負荷を点灯又は消灯させるために操作される操作部と、
入射面に入射した前記第１照明負荷の放射光及び前記第２照明負荷の放射光を導光して出射面から外部に放射する導光板と、
周囲の明るさに応じて出力の大きさが変化する照度変換部と、
前記照度変換部の出力から求めた明るさが所定値よりも暗くなると、前記コンセントから前記プラグを介して供給される電力で前記第１照明負荷を点灯させるように前記点灯回路を制御し、前記操作部を用いて点灯操作が行われると電池から供給される電力で前記第２照明負荷を点灯させるように前記点灯回路を制御する制御部と、
前記プラグ、前記点灯回路、前記操作部、前記導光板、前記照度変換部、及び前記制御部を有し、前記導光板の前記出射面を一面から露出させる器体とを備え、
前記導光板の前記出射面は、前記一面の半分以上の面積を有し、
前記電池から供給される電力で点灯する前記第２照明負荷の前記第２色温度が、前記商用電源から供給される電力で点灯する前記第１照明負荷の前記第１色温度よりも高い
ことを特徴とする照明器具。 A plug that is detachably connected to a commercial power outlet,
A first lighting load emitted light is first color temperature, and a lighting circuit for lighting a second lighting load is different from the second color temperature and emitted light of the first color temperature,
An operation unit operated to turn on or off the second lighting load;
A light guide plate that guides the radiated light of the first illumination load and the radiated light of the second illumination load incident on the incident surface and radiates the light from the exit surface to the outside;
An illuminance converter that changes the output size according to the ambient brightness;
When the brightness obtained from the output of the illuminance conversion unit becomes darker than a predetermined value, the lighting circuit is controlled to light the first lighting load with power supplied from the outlet through the plug, A control unit that controls the lighting circuit to light the second lighting load with power supplied from a battery when a lighting operation is performed using the operation unit;
Comprising the plug, the lighting circuit, the operation unit, the light guide plate, the illuminance conversion unit, and the control unit, and a device body that exposes the exit surface of the light guide plate from one surface,
The exit surface of the light guide plate has an area of more than half of the one surface,
The second color temperature of the second illumination load to be turned by the power supplied from the previous SL cells, we higher than the first color temperature of the first illumination load to be turned on by the power supplied from the commercial power source A lighting apparatus characterized by that. 前記電池から供給される電力で点灯する前記第２照明負荷の放射光は、白色であり、
前記商用電源から供給される電力で点灯する前記第１照明負荷の放射光は、電球色である
ことを特徴とする請求項１に記載の照明器具。 The emitted light of the second illumination load that is lit by the power supplied from the battery is white,
2. The lighting apparatus according to claim 1, wherein the emitted light of the first lighting load that is lit by electric power supplied from the commercial power source has a light bulb color . 3. 前記器体に設けられ、第１面に前記照度変換部を実装し、厚み方向において前記第１面とは反対側の第２面に前記第１照明負荷と前記第２照明負荷とを実装する基板を更に備えることを特徴とする請求項１又は２に記載の照明器具。  The illuminance conversion unit is mounted on the first surface, and the first illumination load and the second illumination load are mounted on the second surface opposite to the first surface in the thickness direction. The lighting apparatus according to claim 1, further comprising a substrate.
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US20050259416A1 (en) * 2003-07-08 2005-11-24 Gauna Kevin W Dual lighting system
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