JP3175965U - Straight tube fluorescent lamp type LED lamp - Google Patents
Straight tube fluorescent lamp type LED lamp Download PDFInfo
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Abstract
【課題】既存蛍光灯と同様の外径を有しながら、その内部にバッテリを収容するに十分な空間を確保できるような筐体構造を有する直管蛍光灯型ＬＥＤランプを提供する。
【解決手段】バッテリ１９を内蔵したタイプの直管蛍光灯型ＬＥＤランプ１０の筐体が、断面略半円形であってその両端に係止片３９を有するポリカーボネートカバー３８と、断面略半円形の外周部と、その両端に形成されてカバーの係止片を着脱可能に収容する係合凹部４０と、断面の直径よりカバー側にずらした位置に設けられるＬＥＤ実装基板貼着面とを有して筒状に形成されたアルミニウムヒートシンク３４と、ヒートシンクのＬＥＤ実装基板３７貼着面のカバー側表面に貼着される高反射シートとからなる。係止片を係合凹部に係合させると、略真円筒形状の筐体が得られる。
【選択図】図３The present invention provides a straight tube fluorescent lamp type LED lamp having a casing structure that has an outer diameter similar to that of an existing fluorescent lamp but can secure a sufficient space for accommodating a battery therein.
A housing of a straight tube fluorescent lamp type LED lamp 10 of a type incorporating a battery 19 has a polycarbonate cover 38 having a substantially semicircular cross section and locking pieces 39 at both ends thereof, and a substantially semicircular cross section. An outer peripheral portion, an engaging recess 40 formed on both ends of the cover to removably accommodate the cover locking piece, and an LED mounting board attaching surface provided at a position shifted to the cover side from the diameter of the cross section The heat sink 34 is formed in a cylindrical shape, and a highly reflective sheet that is attached to the cover side surface of the LED mounting substrate 37 attachment surface of the heat sink. When the locking piece is engaged with the engaging recess, a substantially true cylindrical housing is obtained.
[Selection] Figure 3
Description
本考案は、既存の蛍光灯に代替して使用可能な直管蛍光灯型ＬＥＤ（発光ダイオード）ランプに関する。 The present invention relates to a straight tube fluorescent lamp type LED (light emitting diode) lamp that can be used in place of an existing fluorescent lamp.
室内や屋外などの照明装置として直管蛍光管が多用されているが、近年では、既存の蛍光管に代替して使用可能なＬＥＤランプも提案されており、消費電力の削減などによる省エネや、ＣＯ２削減などによるエコ性、また水銀などの有害物質を含まないなどの安全性に優れていることから今後の更なる普及が期待されている。 Although straight fluorescent tubes are often used as lighting devices for indoors and outdoors, in recent years LED lamps that can be used in place of existing fluorescent tubes have also been proposed, saving energy by reducing power consumption, It is expected to spread further in the future because of its excellent eco-friendliness due to CO2 reduction and the safety that it does not contain harmful substances such as mercury.
このような直管蛍光灯型ＬＥＤランプの一例が下記特許文献１に記載されている。この直管蛍光灯型ＬＥＤランプは、光拡散型ポリカーボネート樹脂製カバーとアルミニウム製ヒートシンクとからなる円筒形状の筐体を有し、ヒートシンク上にＬＥＤ実装基板を配し、ＬＥＤ駆動回路からの電圧をＬＥＤ実装基板上のＬＥＤに印加して点灯させる。円筒形状の筐体において、ヒートシンクは半周に満たない薄型形状とされ、ポリカーボネート樹脂製カバーが半周を大きく超えた形状を有し、ＬＥＤからの光を広角度に拡散させることを可能にしている。 An example of such a straight tube fluorescent lamp type LED lamp is described in Patent Document 1 below. This straight tube fluorescent lamp type LED lamp has a cylindrical casing composed of a light diffusion type polycarbonate resin cover and an aluminum heat sink, and an LED mounting substrate is arranged on the heat sink, and the voltage from the LED drive circuit is supplied. The LED is applied to the LED on the LED mounting substrate and turned on. In the cylindrical housing, the heat sink has a thin shape less than half a circumference, and the polycarbonate resin cover has a shape greatly exceeding the half circumference, and allows light from the LED to be diffused at a wide angle.
ＬＥＤランプは、通常の場合、両端のソケットから供給される交流電力を変換・整流して得られる直流電力で点灯させるが、これが唯一の電源とすると、停電などの非常時にはＬＥＤランプを点灯させることができない。この問題を解決するためには、交流電源と共に、ＬＥＤランプに内蔵したバッテリ（たとえばリチウムイオンバッテリ）でＬＥＤランプを点灯させるもう一つの電源を備えておき、交流電源を利用できない非常時にはバッテリ電源を利用してＬＥＤランプを点灯させて非常灯として機能させるように制御することが好ましい。 LED lamps are usually lit with DC power obtained by converting and rectifying the AC power supplied from the sockets at both ends. If this is the only power source, the LED lamp should be lit in the event of an emergency such as a power failure. I can't. In order to solve this problem, an AC power supply and another power source that turns on the LED lamp with a battery (for example, a lithium ion battery) built in the LED lamp is provided. It is preferable to control so that the LED lamp is turned on to function as an emergency light.
また、ＬＥＤランプの消費電力は蛍光灯に比べると非常に小さい（たとえば２２〜２５Ｗ程度）ので、通常時には交流電源を用いてＬＥＤランプを点灯させると同時にバッテリを充電することが可能であり、非常時に備えてバッテリ残量を十分に確保しておくことができる。 Further, since the power consumption of the LED lamp is very small (for example, about 22 to 25 W) as compared with the fluorescent lamp, it is possible to charge the battery at the same time that the LED lamp is turned on using an AC power source in a normal state. Sufficient battery capacity can be secured in preparation for the occasion.
以上のような利点から、バッテリを内蔵したタイプのＬＥＤランプが提案されるに至っているが、上記従来技術によるＬＥＤランプの構造によると、ヒートシンク内部の空間が小さく、バッテリを収容することが実際上不可能である。すなわち、既存蛍光管の平均外径は３２．５ｍｍであるので、既存の蛍光灯設置用器具に装着するためには、ＬＥＤランプの外径も３２．５ｍｍを超えないようにすることが好ましいが、一方、バッテリとして好適に使用される高容量のリチウムイオンバッテリは、現時点で製造されている最も小型のものでも約１５ｍｍ径であるため、上記従来技術による直管蛍光灯型ＬＥＤランプではヒートシンク内にバッテリを収容することができない。 Due to the above advantages, a type of LED lamp with a built-in battery has been proposed. However, according to the structure of the LED lamp according to the above-described prior art, the space inside the heat sink is small and the battery can be accommodated practically. Impossible. That is, since the average outer diameter of the existing fluorescent tube is 32.5 mm, it is preferable that the outer diameter of the LED lamp does not exceed 32.5 mm in order to be mounted on an existing fluorescent lamp installation tool. On the other hand, a high-capacity lithium ion battery suitably used as a battery has a diameter of about 15 mm even at the smallest size currently manufactured. The battery cannot be accommodated.
したがって、本考案が解決しようとする課題は、通常時には供給される交流電力を変換・整流して得られる直流電力でＬＥＤを点灯させると共に交流電力が供給されない非常時には内蔵するバッテリでＬＥＤを点灯させるタイプの直管蛍光灯型ＬＥＤランプにおいて、既存蛍光灯と同様の外径および外観を有しながら、その内部にバッテリを収容するための十分な空間を確保できるような筐体構造を提供することである。 Therefore, the problem to be solved by the present invention is that the LED is lit with DC power obtained by converting and rectifying the supplied AC power in normal times, and the LED is lit with a built-in battery in an emergency when AC power is not supplied. To provide a housing structure that can secure a sufficient space for accommodating a battery in an LED lamp of a type of straight tube fluorescent lamp while having the same outer diameter and appearance as an existing fluorescent lamp It is.
この課題を解決するため、請求項１に係る本考案は、蛍光灯用に設けられた一対のソケット間に装着可能であり、該ソケットから供給される交流電力を変換・整流して得られる直流電力でＬＥＤを発光させる第一の電源回路と、内蔵するバッテリでＬＥＤを発光させる第二の電源回路と、通常時は第一の電源回路でＬＥＤを発光させると共に交流電力が供給されない非常時には第二の電源回路でＬＥＤを発光させる直管蛍光灯型ＬＥＤランプであって、その筐体が、断面略半円形であってその両端に係止片を有するカバーと、断面略半円形の外周部と、その両端に形成されてカバーの係止片を着脱可能に収容する係合凹部と、断面の直径よりカバー側にずらした位置に設けられるＬＥＤ実装基板貼着面とを有して筒状に形成されたヒートシンクと、ヒートシンクのＬＥＤ実装基板貼着面のカバー側表面に貼着される高反射シートとからなり、カバーの係止片をヒートシンクの係合凹部に係合させたときには既存蛍光管と同様の外観を呈する略真円筒形状の筐体が得られると共に、筒状のヒートシンクの内部には前記バッテリを収容するに十分な空間が確保されることを特徴とする。 In order to solve this problem, the present invention according to claim 1 can be mounted between a pair of sockets provided for a fluorescent lamp, and is obtained by converting and rectifying AC power supplied from the socket. A first power supply circuit that causes the LED to emit light with electric power, a second power supply circuit that causes the LED to emit light with a built-in battery, and a first power supply circuit that normally causes the LED to emit light and an alternating current is not supplied. A straight tube fluorescent lamp type LED lamp that causes an LED to emit light with a second power supply circuit, the casing of which has a substantially semicircular cross section and has locking pieces at both ends thereof, and an outer peripheral portion having a substantially semicircular cross section And an engagement recess formed at both ends of the cover to removably accommodate the cover locking piece, and an LED mounting board attaching surface provided at a position shifted to the cover side from the cross-sectional diameter. Heat sink formed on And a highly reflective sheet that is attached to the cover side surface of the heat sink LED mounting substrate attachment surface. When the engagement piece of the cover is engaged with the engagement recess of the heat sink, the appearance is similar to that of an existing fluorescent tube. In addition, a substantially cylindrical housing exhibiting the above is obtained, and a sufficient space for accommodating the battery is secured inside the cylindrical heat sink.
請求項２に係る本考案は、請求項１記載の直管蛍光灯型ＬＥＤランプにおいて、前記カバーがポリカーボネートの押出成形により形成され、前記ヒートシンクがアルミニウムまたはアルミニウム合金の押出成形により形成されることを特徴とする。 The present invention according to claim 2 is the straight tube fluorescent lamp type LED lamp according to claim 1, wherein the cover is formed by extrusion molding of polycarbonate, and the heat sink is formed by extrusion molding of aluminum or an aluminum alloy. Features.
請求項１記載の本考案によれば、バッテリを内蔵したタイプの直管蛍光灯型ＬＥＤランプにおいて、既存蛍光管ランプと同様の外径を有しながら、その内部にバッテリを収容するための十分な空間を確保することができる効果がある。カバー内の空間は断面半円より小さくなるが、カバーと高反射シートによって効率的にＬＥＤ発光を拡散・反射させることができるので、１８０度以上（たとえば最大２７０度）の広角度に光を拡散させることができる。 According to the first aspect of the present invention, a straight tube fluorescent lamp type LED lamp having a built-in battery has an outer diameter similar to that of an existing fluorescent tube lamp, but is sufficient for accommodating the battery therein. Effective space can be secured. The space inside the cover is smaller than the semicircular cross section, but the LED light can be efficiently diffused and reflected by the cover and the highly reflective sheet, so that the light is diffused over a wide angle of 180 degrees or more (for example, maximum 270 degrees). Can be made.
請求項２記載の本考案によれば、ポリカーボネートの押出成形により得られるカバーを用いることによって最適な光拡散効果が得られ、アルミニウムまたはアルミニウムの押出成形により得られるヒートシンクを用いることによって最適な放熱効果が得られる。 According to the second aspect of the present invention, an optimum light diffusion effect can be obtained by using a cover obtained by extrusion molding of polycarbonate, and an optimum heat dissipation effect can be obtained by using aluminum or a heat sink obtained by extrusion molding of aluminum. Is obtained.
図１および図２を参照して本考案の実施形態について詳述する。直管蛍光灯型ＬＥＤランプ１０は、既存の蛍光灯に代替して使用可能であり、その寸法および形状は既存の蛍光灯と略同一であって、既存の蛍光灯用に設けられている一対のソケット間に装着可能である。直管蛍光灯型ＬＥＤランプ１０は、断面略円筒形を有する筐体１１の内部にＬＥＤ実装基板（図示せず）が収容固定されており、ＬＥＤ２２からの射出光を透過および／または拡散させて照明する。一実施形態において、筐体１１は、略半周で分割された２部材、すなわち、ポリカーボネートなどの光透過、光半透過または光拡散性を有するプラスチック材料で形成されるカバー３８と、アルミニウムなどの放熱性材料で形成されるヒートシンク３４とで構成され、カバー３８にＬＥＤ実装基板３７が内蔵され、ヒートシンク３４に後述するバッテリ１９その他の電源回路が内蔵される（詳しくは図３を参照して後述）。 An embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. The straight tube fluorescent lamp type LED lamp 10 can be used in place of the existing fluorescent lamp, and its size and shape are substantially the same as those of the existing fluorescent lamp, and a pair provided for the existing fluorescent lamp. It can be installed between the sockets. In the straight tube fluorescent lamp type LED lamp 10, an LED mounting substrate (not shown) is accommodated and fixed in a housing 11 having a substantially cylindrical cross section, and light emitted from the LED 22 is transmitted and / or diffused. Illuminate. In one embodiment, the housing 11 includes two members divided approximately half a circumference, that is, a cover 38 formed of a plastic material having light transmission, light semitransmission or light diffusibility such as polycarbonate, and heat dissipation such as aluminum. The LED mounting substrate 37 is built in the cover 38, and the battery 19 and other power supply circuits described later are built in the heat sink 34 (details will be described later with reference to FIG. 3). .
直管蛍光灯型ＬＥＤランプ１０は、口金部１２を介して既存蛍光灯用のソケット（図示せず）に装着されたときに、該ソケットから供給される交流電力を変換・整流して得られる直流電力をＬＥＤ駆動回路１５に供給して、基板上のＬＥＤ２２を発光させる電源回路（第一の電源回路１３）を有する。この第一の電源回路１３は、交流電力を直流電力変換するＡＣ−ＤＣコンバータ２４（図２参照、図１では図示省略）、ＡＣ−ＤＣコンバータ２４から出力される直流電力を整流する整流器１６、該直流電力を所定電圧に変換する電圧トランス１７、一時的に蓄電して電力供給を安定化させるためのバッファとして働く電解コンデンサ１８（図１参照，図２ではいずれも図示省略）などを含んで構成される。後述するように、通常時は、既存蛍光灯照明設備として壁などに設けられている外部スイッチ２７がＯＮとされるにより、第一の電源回路１３から直流電力がＬＥＤ駆動回路１５に供給されてＬＥＤ２２を発光させることによって直管蛍光灯型ＬＥＤランプ１０が点灯し、スイッチ２７のＯＦＦによって電力供給が停止することによって消灯する。 The straight tube fluorescent lamp type LED lamp 10 is obtained by converting and rectifying the AC power supplied from the socket when mounted on an existing fluorescent lamp socket (not shown) via the base 12. It has a power supply circuit (first power supply circuit 13) for supplying direct current power to the LED drive circuit 15 and causing the LEDs 22 on the substrate to emit light. The first power supply circuit 13 includes an AC-DC converter 24 (see FIG. 2, not shown in FIG. 1) that converts AC power into DC power, a rectifier 16 that rectifies DC power output from the AC-DC converter 24, It includes a voltage transformer 17 that converts the DC power into a predetermined voltage, an electrolytic capacitor 18 that functions as a buffer for temporarily storing electricity and stabilizing the power supply (see FIG. 1 and FIG. 2 are not shown). Composed. As will be described later, in the normal state, when the external switch 27 provided on the wall or the like as the existing fluorescent lamp lighting equipment is turned on, DC power is supplied from the first power supply circuit 13 to the LED drive circuit 15. The straight tube fluorescent lamp type LED lamp 10 is turned on by causing the LED 22 to emit light, and is turned off when the power supply is stopped by turning off the switch 27.
直管蛍光灯型ＬＥＤランプ１０は、さらに、バッテリ１９でＬＥＤ２２を発光させる第二の電源回路２０を有する。バッテリ１９によるＬＥＤ点灯時間を最大化させるために、バッテリ１９はヒートシンク３４内に収容可能な小型でありながらできるだけ大きな電池容量を有するものが好ましく、現時点ではリチウムイオンバッテリの使用が最適である。そして、スイッチコントローラ１４は、第一の電源回路１３に設けられたＩＣスイッチ２５をあらかじめ設定された条件の下で開閉制御することにより、ＬＥＤ２２の点灯に用いる電源回路１３，２０の切替などの制御を行う。チャージコントローラ２１は、バッテリ１９内の電圧および電流を検知することによりバッテリ残量を常時モニターし、バッテリ残量が上限閾値または下限閾値に達したときにはその旨を知らせる信号をスイッチコントローラ１４に与える。あるいは、内部ＩＣスイッチ２５に製品仕様またはユーザによる設定値としてバッテリ残量の上限閾値および下限閾値を記憶させておき、チャージコントローラ２１からのバッテリ残量検知信号を受けて上限閾値／下限閾値に達したことを判断しても良い。また、特にリチウムイオンバッテリは充放電時の電圧を厳密に制御する必要があるので、チャージコントローラ２１は、たとえば、充電時は４．２Ｖ、放電時は３．０Ｖの電圧を維持するようにコントロールする。 The straight tube fluorescent lamp type LED lamp 10 further includes a second power supply circuit 20 that causes the LED 22 to emit light by the battery 19. In order to maximize the LED lighting time by the battery 19, it is preferable that the battery 19 has a battery capacity as large as possible while being small enough to be accommodated in the heat sink 34, and at present, the use of a lithium ion battery is optimal. The switch controller 14 controls the switching of the power supply circuits 13 and 20 used for lighting the LED 22 by controlling the opening and closing of the IC switch 25 provided in the first power supply circuit 13 under a preset condition. I do. The charge controller 21 constantly monitors the remaining battery level by detecting the voltage and current in the battery 19, and gives a signal to that effect to the switch controller 14 when the remaining battery level reaches the upper limit threshold or the lower limit threshold. Alternatively, the upper limit threshold and the lower limit threshold of the remaining battery level are stored in the internal IC switch 25 as product specifications or user set values, and the upper limit threshold / lower limit threshold is reached in response to a battery remaining amount detection signal from the charge controller 21. You may judge what you did. In particular, the lithium ion battery needs to strictly control the voltage at the time of charging / discharging, so the charge controller 21 is controlled to maintain a voltage of, for example, 4.2V during charging and 3.0V during discharging. To do.
図３は、本考案による直管蛍光灯型ＬＥＤランプ１０の筐体構造および内部構造の好適な一例を示す概略断面図である。この実施形態によれば、断面略半円筒形に形成されたアルミニウム製ヒートシンク３４の空間内に第一の電源回路１３、バッテリ１９、第二の電源回路２０などを含む電源部が収容され、このヒートシンク３４の平板部３５上に高反射シート３６を介して、多数のＬＥＤ２２を実装したＬＥＤ実装基板３７が固定されている。また、半透明ポリカーボネート製のＬＥＤカバー３８が断面略半円筒形に形成され、その両端の係止片３９，３９をヒートシンク３４の両端の係合凹部４０，４０に係止することによって、全体として断面が真円の蛍光灯形状を有する筐体１１を形成している。その外径は、既存蛍光管と同様の３２．５ｍｍである。 FIG. 3 is a schematic cross-sectional view showing a preferred example of the housing structure and internal structure of the straight tube fluorescent lamp type LED lamp 10 according to the present invention. According to this embodiment, the power supply unit including the first power supply circuit 13, the battery 19, the second power supply circuit 20, and the like is accommodated in the space of the aluminum heat sink 34 having a substantially semi-cylindrical cross section. An LED mounting substrate 37 on which a large number of LEDs 22 are mounted is fixed on a flat plate portion 35 of the heat sink 34 via a highly reflective sheet 36. Further, the LED cover 38 made of translucent polycarbonate is formed in a substantially semi-cylindrical cross section, and the engaging pieces 39, 39 at both ends thereof are engaged with the engaging recesses 40, 40 at both ends of the heat sink 34, so that as a whole A casing 11 having a fluorescent lamp shape with a perfect cross section is formed. Its outer diameter is 32.5 mm, similar to existing fluorescent tubes.
この構造によれば、外周においてはヒートシンク３４とＬＥＤカバー３８とを半円で接続しながら、ヒートシンク３４の平板部３５が半円を超えてカバー３８側に変位して設けられることによってバッテリ１９のための収容空間をより大きくした構造が採用されている。したがって、既存蛍光管と同様の３２．５ｍｍ径であっても、大容量のリチウムイオンバッテリ１９を内蔵することが可能である。外周ではカバー３８が半円領域を確保しているため、高反射シート３６による反射とも相俟って、ＬＥＤ２２からの発光を効率的に拡散・反射させることで最大２７０°の広角度に光を拡散させることが可能である。カバー３８を形成するポリカーボネートに拡散剤を含有させることにより、カバー３８内外に光を乱反射させることができ、その含有率を調整して光を減衰させずに効率的に拡散させる。また、外観的にはヒートシンク３４とカバー３８がいずれも半円筒形状を有するように見えるので、見た目の違和感がない。 According to this structure, the heat sink 34 and the LED cover 38 are connected in a semicircle on the outer periphery, and the flat plate portion 35 of the heat sink 34 is provided to be displaced to the cover 38 side beyond the semicircle, whereby the battery 19 For this reason, a structure having a larger accommodation space is employed. Therefore, a large-capacity lithium ion battery 19 can be incorporated even if the diameter is 32.5 mm, which is the same as that of existing fluorescent tubes. Since the cover 38 secures a semicircular area on the outer periphery, combined with the reflection by the highly reflective sheet 36, the light emitted from the LED 22 is efficiently diffused and reflected to emit light at a wide angle of up to 270 °. It is possible to diffuse. By including a diffusing agent in the polycarbonate forming the cover 38, light can be diffusely reflected in and out of the cover 38, and the content is adjusted to efficiently diffuse the light without attenuation. Further, since the heat sink 34 and the cover 38 both appear to have a semi-cylindrical shape, there is no uncomfortable appearance.
ヒートシンク３４の平坦部３５は、そのカバー３８側の面がＬＥＤ実装基板３７の貼着面となるものであるから、できるだけ平坦な面とすることが好ましい。また、これを平坦面とすることによって、カバー３８との間の光の反射を効率的にし、さらには、ＬＥＤ実装基板３７で発生した熱を効率的にヒートシンク３４に伝達することができる。 Since the flat part 35 of the heat sink 34 has a surface on the cover 38 side to be a sticking surface of the LED mounting substrate 37, it is preferable to make the flat part 35 as flat as possible. Moreover, by making this into a flat surface, the reflection of the light between the covers 38 can be made efficient, and furthermore, the heat generated in the LED mounting substrate 37 can be efficiently transmitted to the heat sink 34.
１０ 直管蛍光灯型ＬＥＤランプ
１１ 筐体
１２ 口金部
１３ 第一の電源回路
１４ スイッチコントローラ
１５ ＬＥＤ駆動回路
１６ 整流器
１７ 電圧トランス
１８ 電解コンデンサ
１９ バッテリ
２０ 第二の電源回路
２１ チャージコントローラ
２２ ＬＥＤ
２３ 通信制御チップ
２４ ＡＣ−ＤＣコンバータ
２５ 内部ＩＣスイッチ
２６ 施設内分電盤
２７ 外部スイッチ
３４ ヒートシンク
３５ 平板部（ＬＥＤ実装基板貼着面）
３６ 高反射シート
３７ ＬＥＤ実装基板
３９ 係止片
４０ 係止凹部
DESCRIPTION OF SYMBOLS 10 Straight tube fluorescent lamp type LED lamp 11 Case 12 Base part 13 First power supply circuit 14 Switch controller 15 LED drive circuit 16 Rectifier 17 Voltage transformer 18 Electrolytic capacitor 19 Battery 20 Second power supply circuit 21 Charge controller 22 LED
23 Communication control chip 24 AC-DC converter 25 Internal IC switch 26 In-facility distribution board 27 External switch 34 Heat sink 35 Flat plate (LED mounting board pasting surface)
36 highly reflective sheet 37 LED mounting board 39 locking piece 40 locking recess
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