JP4735656B2 - Tube with reflector - Google Patents

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JP4735656B2
JP4735656B2 JP2008102296A JP2008102296A JP4735656B2 JP 4735656 B2 JP4735656 B2 JP 4735656B2 JP 2008102296 A JP2008102296 A JP 2008102296A JP 2008102296 A JP2008102296 A JP 2008102296A JP 4735656 B2 JP4735656 B2 JP 4735656B2
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coil
point
filament
reflector
double
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JP2009252680A5 (en
JP2009252680A (en
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進也 川越
尚隆 橋本
敏靖 小島
拓 池田
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は反射鏡付き管球に関する。   The present invention relates to a tube with a reflector.

反射鏡付き管球、例えば反射鏡付きハロゲン電球は、凹面状の反射鏡内にハロゲン電球が組み込まれた構成を有し、例えば商業施設におけるスポットライト等の一般照明用として広く使用されている。近時、この種の反射鏡付きハロゲン電球に対して省エネルギー化が要望されている。具体的には、反射鏡付きハロゲン電球の中心照度を向上させ、その分、消費電力を低減することが提案されている。例えば、現在市販されている定格電力65Wの反射鏡付きハロゲン電球に対して中心照度を向上させる技術を採用した上で、中心照度が定格電力65Wの反射鏡付きハロゲン電球と同程度を維持しつつ消費電力を低減し、定格電力50Wの反射鏡付きハロゲン電球として提供するものである。   A tube with a reflector, for example, a halogen bulb with a reflector, has a configuration in which a halogen bulb is incorporated in a concave reflector, and is widely used for general illumination such as a spotlight in a commercial facility. Recently, energy saving is demanded for this type of halogen bulb with a reflector. Specifically, it has been proposed to improve the central illuminance of the halogen light bulb with a reflector and to reduce the power consumption accordingly. For example, while adopting a technology for improving the central illuminance for a commercially available halogen bulb with a reflector with a rated power of 65 W, the central illumination is maintained at the same level as that of a halogen bulb with a reflector with a rated power of 65 W. The power consumption is reduced, and a halogen light bulb with a reflector having a rated power of 50 W is provided.

ここで、ハロゲン電球は、バルブとこのバルブ内に配置されたフィラメントとを備えている。このフィラメントがコンパクトであればあるほどフィラメントを点光源に近づけることができ、反射鏡との組み合わせにおいて集光効率を向上させることができる。しかし、一般的に定格電圧[V]および定格電力[W]、さらには定格寿命時間(例えば3000時間)が決定されると、フィラメントを構成しているタングステン線の素線長や素線径がその定格電圧、定格電力および定格寿命時間に応じて実質的に定まってしまうので、例えば単純に素線長を短くしてフィラメントをコンパクト化することは困難である。   Here, the halogen light bulb includes a bulb and a filament disposed in the bulb. The more compact the filament, the closer the filament is to a point light source, and the light collection efficiency can be improved in combination with a reflecting mirror. However, generally, when the rated voltage [V], the rated power [W], and the rated life time (for example, 3000 hours) are determined, the strand length and the strand diameter of the tungsten wire constituting the filament are determined. Since it is substantially determined according to the rated voltage, rated power, and rated life time, it is difficult to make the filament compact by simply shortening the wire length, for example.

なお、ここで言う「集光効率」とは、電力当たりの照度[lx/W]を示している。   The “light collection efficiency” referred to here indicates illuminance [lx / W] per electric power.

また、「定格電圧」、「定格電力」、および「定格寿命時間」のそれぞれの関係については次のとおりである。すなわち、定格電圧と定格電力が決定すると、フィラメントの抵抗値が決定する。したがって、素線長を短くすると、抵抗値を維持するために素線径を細くする必要が生じる。ところが、素線径を細くすると点灯中、タングステンの蒸発によってタングステン線が細って断線しやすくなり、寿命時間は短くなる傾向にある。一方、寿命時間を確保するために素線径を太くした場合、抵抗値を維持するために素線長を長くする必要が生じる。ところが、素線長が長くなりすぎると、バルブの大きさ等に応じてフィラメントの寸法を一定の範囲内に収める必要があるので、ピッチを狭くしたり、バルブ内に設けられた状態におけるフィラメントにかかるテンションを小さくしなくてはならなくなり、フィラメントの機械的強度が弱くなって断線してしまうおそれがある。したがって、所定の定格電圧、定格電力、および定格寿命時間を満足するためには、実質的に素線長および素線径がほぼ一義的に決定される。   In addition, the relationship between “rated voltage”, “rated power”, and “rated life time” is as follows. That is, when the rated voltage and the rated power are determined, the resistance value of the filament is determined. Therefore, if the wire length is shortened, it is necessary to reduce the wire diameter in order to maintain the resistance value. However, if the wire diameter is reduced, the tungsten wire becomes thinner due to evaporation of tungsten during lighting and the wire tends to be broken, and the life time tends to be shortened. On the other hand, when the strand diameter is increased in order to ensure the lifetime, it is necessary to increase the strand length in order to maintain the resistance value. However, if the strand length is too long, the filament dimensions must be kept within a certain range according to the size of the bulb, etc. Such tension must be reduced, and the mechanical strength of the filament may be weakened and may be broken. Therefore, in order to satisfy the predetermined rated voltage, rated power, and rated life time, the wire length and the wire diameter are substantially uniquely determined.

そこで、一般的に定格電圧100[V]以上、例えば110[V]のハロゲン電球においては、コンパクト化を図るためにフィラメントに二重巻きコイルが用いられていることが多い。そして、上述したとおり省エネルギー化の要望を実現するべく、さらに一層のコンパクト化を図るために、このフィラメントに三重巻きコイルを用いることが提案されている(例えば特許文献1参照)。
特開2001−345077号公報
Therefore, in general, in a halogen bulb having a rated voltage of 100 [V] or more, for example, 110 [V], a double-winding coil is often used for the filament in order to achieve compactness. And as mentioned above, in order to realize the further demand for energy saving, it has been proposed to use a triple wound coil for this filament (see, for example, Patent Document 1).
JP 2001-345077 A

しかしながら、コイルを三重巻きとその巻き数を多くしていくに従って、耐衝撃性が低くなっていく。そこで、特に三重巻きコイルをバルブ内に設けるに当たっては、耐衝撃性を向上させるために三重巻きコイルをその長手方向に引っ張った状態で、つまりテンションをかけた状態で内部リード線等に電気的に、かつ機械的に接続する必要がある。しかしながら、そうしたときには三重巻きコイルにおける三次コイルのピッチが大きくなり、三重巻きコイル全体としてその長手方向に長くなって十分なコンパクト性が得られなくなるという問題が起こる。   However, as the coil is triple-turned and the number of turns is increased, the impact resistance is lowered. Therefore, in particular, when providing the triple coil in the bulb, in order to improve the impact resistance, the triple coil is pulled in the longitudinal direction, that is, the tension is applied to the internal lead wire etc. And mechanically connected. However, in such a case, the pitch of the tertiary coil in the triple-winding coil becomes large, and the entire triple-winding coil becomes longer in the longitudinal direction, resulting in a problem that sufficient compactness cannot be obtained.

本発明は、このような事情に鑑みてなされたものであり、フィラメントの耐衝撃性を十分に確保しつつ、中心照度をほとんど低下させることなく、低消費電力の反射鏡付き管球を提供することを目的とする。   The present invention has been made in view of such circumstances, and provides a low-power-consumption reflector-equipped bulb without substantially reducing the central illuminance while sufficiently securing the impact resistance of the filament. For the purpose.

本発明の請求項1記載の管球は、反射鏡と、この反射鏡内に組み込まれ、かつ内部にフィラメントが配置されたバルブを有するハロゲン電球とを備えた定格電圧が110[V]であり、定格電力が略50[W]の反射鏡付き管球であって、前記フィラメントは前記反射鏡の光軸方向に延びる略直線状の二重巻きコイル部を有し、かつ前記二重巻きコイル部の素線が前記反射鏡の光軸と交差しており、前記フィラメントにおける二重巻きコイル部のコイル長をL[mm]、コイル外径をR[mm]とした場合、前記コイル長Lおよび前記コイル外径Rは座標(L,R)で表される点(5.50,1.95)、点(7.50,1.75)、点(7.50,0.95)、点(5.50,1.15)を順次結んだ線分で囲まれた範囲内(ただし、前記線分上を含む)から選択された値を有し、前記二重巻きコイル部は、その素線長が400[mm]以上500[mm]以下の範囲内、素線径が0.042[mm]以上0.048[mm]以下の範囲内、一次コイルのマンドレル径が0.20[mm]以上0.32[mm]以下の範囲内、一次コイルのピッチが0.05[mm]以上0.08[mm]以下の範囲内、二次コイルのマンドレル径が0.4[mm]以上1.2[mm]以下の範囲内、二次コイルのピッチが0.5[mm]以上0.9[mm]以下の範囲内にそれぞれ設定される。 The tube according to claim 1 of the present invention has a rated voltage of 110 [V] including a reflecting mirror and a halogen bulb having a bulb incorporated in the reflecting mirror and having a filament disposed therein. A tube with a reflecting mirror having a rated power of about 50 [W], wherein the filament has a substantially straight double-winding coil portion extending in the optical axis direction of the reflecting mirror, and the double-winding coil When the coil length of the double-winding coil portion of the filament is L [mm] and the coil outer diameter is R [mm], the element wire of the section intersects the optical axis of the reflecting mirror. The outer diameter R of the coil is expressed by coordinates (L, R) (5.50, 1.95), point (7.50, 1.75), point (7.50, 0.95), Within a range surrounded by line segments connecting points (5.50, 1.15) in sequence (however, the above Have a value selected from the distribution including above), the double-wound coil unit, the wire length of 400 [mm] above 500 [mm] within the range, the wire diameter is 0.042 [mm ] In the range of 0.048 [mm] or less, the mandrel diameter of the primary coil is in the range of 0.20 [mm] or more and 0.32 [mm] or less, and the pitch of the primary coil is 0.05 [mm] or more and 0. 0.08 [mm] or less, the secondary coil mandrel diameter is 0.4 [mm] or more and 1.2 [mm] or less, and the secondary coil pitch is 0.5 [mm] or more. 9 [mm] Ru respectively set within the following range.

なお、本発明に係る反射鏡付きハロゲン電球は定格電圧110[V]とし、すなわち商用電源で点灯されるものを対象としている。また、定格電力は「略50[W]」としているが、ここでの「略」はそのばらつきの範囲を含むことを意味し、実質的には46.0[W]以上54.0[W]以下の範囲内は含む。   In addition, the halogen bulb with a reflector according to the present invention is intended for a rated voltage of 110 [V], that is, one that is lit by a commercial power source. The rated power is “approximately 50 [W]”, but “approximately” here means that the range of the variation is included, and is substantially 46.0 [W] or more and 54.0 [W]. The following ranges are included.

また、本発明に係る反射鏡付きハロゲン電球は、フィラメントにおいて「反射鏡の長手方向に延びる直線状の二重巻きコイル部を有し」ているが、ここでいう「略直線状」とは厳密な意味での直線状を含むことはもちろんのこと、設計上は直線状とするものの製造上のばらつきによって例えば弓形状や蛇行状になったものも含む。   Further, the halogen light bulb with a reflector according to the present invention has “a linear double-wound coil portion extending in the longitudinal direction of the reflector” in the filament, but “substantially linear” here is strictly In addition to including a straight line shape in a simple sense, it includes, for example, a straight line shape in design but also a bow shape or a meander shape due to manufacturing variations.

本発明は、フィラメントの耐衝撃性を十分に確保しつつ、中心照度をほとんど低下させることなく、低消費電力の反射鏡付き管球を提供することができるものである。   The present invention can provide a low-power-consumption reflector-equipped bulb with almost no reduction in central illuminance while sufficiently securing the impact resistance of the filament.

以下、本発明の最良な実施の形態について、図面を用いて説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

図1に示すように、本発明の第1の実施の形態である反射鏡付きハロゲン電球1は、一例として主にスポットライト等の一般照明用として使用されているものであって、反射鏡2と、この反射鏡2内に組み込まれた定格電圧が110[V]であり、定格電力が略50[W]のハロゲン電球3とを備えている。   As shown in FIG. 1, a halogen lamp 1 with a reflector according to a first embodiment of the present invention is used mainly for general illumination such as a spotlight as an example, and includes a reflector 2. And a halogen lamp 3 having a rated voltage of 110 [V] and a rated power of approximately 50 [W] incorporated in the reflecting mirror 2.

反射鏡2は、その基体が硬質ガラスまたは石英ガラス等からなり、一端部に光を照射する開口部4を、他端部に筒状のネック部5をそれぞれ有し、かつ内面に回転楕円体面または回転放物体面等からなる回転体の反射面6が形成されている。   The reflecting mirror 2 has a base made of hard glass or quartz glass, has an opening 4 for irradiating light at one end, a cylindrical neck 5 at the other end, and a spheroid surface on the inner surface. Alternatively, a reflecting surface 6 of a rotating body composed of a rotating paraboloid surface is formed.

開口部4には、前面ガラス7が設けられ、かつ接着剤8によって固定されている。前面ガラス7の固定方法としては、接着剤8に代えて公知の止め金具(図示せず)を用いたり、止め金具と接着剤8とを併用したりすることもできる。もっとも、前面ガラス7は必ずしも設ける必要はない。   A front glass 7 is provided in the opening 4 and is fixed by an adhesive 8. As a method for fixing the front glass 7, a known stopper (not shown) may be used instead of the adhesive 8, or the stopper and the adhesive 8 may be used in combination. However, the front glass 7 is not necessarily provided.

ネック部5の外側には、照明器具のソケット(図示せず)に装着される口金9がこのネック部5の端部を覆うように設けられ、接着剤(図示せず)を介して固着されている。一方、ネック部5内には、ハロゲン電球3の後述する封止部14が挿入され、同じく接着剤(図示せず)を介して固着されている。   A base 9 attached to a socket (not shown) of a lighting fixture is provided outside the neck portion 5 so as to cover an end portion of the neck portion 5 and is fixed through an adhesive (not shown). ing. On the other hand, a sealing portion 14 to be described later of the halogen light bulb 3 is inserted into the neck portion 5 and is similarly fixed through an adhesive (not shown).

反射面6には、アルミニウムやクロム等の金属膜の他、二酸化ケイ素(SiO2)、二酸化チタン(TiO2)、フッ化マグネシウム(MgF)、硫化亜鉛(ZnS)等からなる多層干渉膜が形成されている。また、この反射面6には必要に応じてファセットを形成してもよい。 In addition to a metal film such as aluminum or chromium, a multilayer interference film made of silicon dioxide (SiO 2 ), titanium dioxide (TiO 2 ), magnesium fluoride (MgF), zinc sulfide (ZnS) or the like is formed on the reflecting surface 6. Has been. Moreover, you may form a facet in this reflective surface 6 as needed.

なお、一例として、反射鏡2は、その最大外径(口径)D0が50[mm]であり、ビーム角が中角のタイプである。 As an example, the reflecting mirror 2 has a maximum outer diameter (aperture) D 0 of 50 [mm] and a beam angle of a medium angle.

ハロゲン電球3は、図2に示すように、石英ガラスや硬質ガラス等からなるバルブ10と、このバルブ10の内部に配置されたフィラメント11とを有している。   As shown in FIG. 2, the halogen light bulb 3 includes a bulb 10 made of quartz glass, hard glass, or the like, and a filament 11 disposed inside the bulb 10.

バルブ10には、封止切りの残痕であるチップオフ部12、略円筒状の発光部13、および公知のピンチシール法によって形成された封止部14がそれぞれ順次連なるように形成されている。発光部13内には、ハロゲン物質と希ガス、またはハロゲン物質と希ガスと窒素ガスとがそれぞれ所定量封入されている。   The bulb 10 is formed so that a chip-off portion 12 which is a residual mark of sealing cut, a substantially cylindrical light emitting portion 13 and a sealing portion 14 formed by a known pinch seal method are successively connected. . A predetermined amount of a halogen substance and a rare gas, or a halogen substance, a rare gas, and a nitrogen gas are sealed in the light emitting unit 13.

フィラメント11は、タングステンからなり、略直線状に延びるように略円形形状に巻かれた二重巻きコイル部15とその両端部にとばし部16を介して形成された脚部17とを有している。このフィラメント11は、バルブ10内において略直線状の二重巻きコイル部15が反射鏡2の光軸X(図1参照)の方向に延びるように位置されているとともに、一端部がそれぞれの脚部17に電気的にかつ機械的に接続された2本の内部リード線18,19によって支持されている。   The filament 11 is made of tungsten, and has a double-winding coil portion 15 wound in a substantially circular shape so as to extend in a substantially linear shape, and leg portions 17 formed at both ends via a skip portion 16. Yes. The filament 11 is positioned in the bulb 10 such that a substantially straight double-wound coil portion 15 extends in the direction of the optical axis X (see FIG. 1) of the reflecting mirror 2, and one end portion of each filament 11 It is supported by two internal leads 18, 19 that are electrically and mechanically connected to the part 17.

なお、とばし部16は非発光の部分であり、フィラメント11における発光部分(二重巻きコイル部15)と非発光の部分との境を明確にし、発光部分の消費電力を安定化させ、ハロゲン電球3個体間でのフィラメント11からの発光光束のばらつきを抑制する機能を有している。   Note that the skip portion 16 is a non-light emitting portion, the boundary between the light emitting portion (double winding coil portion 15) and the non-light emitting portion in the filament 11 is clarified, the power consumption of the light emitting portion is stabilized, and the halogen bulb It has a function of suppressing variations in the luminous flux from the filament 11 among the three individuals.

内部リード線18,19の他端部は、封止部14に封着された金属箔20,21を介して外部リード線22,23の一端部に接続されている。外部リード線22,23の他端部は、図1に示すように、封止部14の端面から外部に導出しており、必要に応じてヒューズ等を介して口金9の端子部24,25にそれぞれ電気的に接続されている。   The other end portions of the internal lead wires 18 and 19 are connected to one end portions of the external lead wires 22 and 23 through metal foils 20 and 21 sealed to the sealing portion 14. As shown in FIG. 1, the other end portions of the external lead wires 22 and 23 are led out from the end face of the sealing portion 14, and the terminal portions 24 and 25 of the base 9 are connected with a fuse or the like as necessary. Are electrically connected to each other.

ここで、図2および図3に示すように、二重巻きコイル部15と反射鏡2の光軸Xとの位置関係は、二重巻きコイル部15の長手方向の中心軸Yが反射鏡2の光軸Xと一致しないように平行にずらされて、二重巻きコイル部15と光軸Xとが交差するようになっている。すなわち、二重巻きコイル部15の素線と光軸Xとを直接的に交差させるものであり、ここで光軸Xと交差する二重巻きコイル部15の部分には、二重巻きコイル部15の長手方向の中心軸Yが通過する二重巻きコイル部15の内径(二次コイルのマンドレル径)部分の空間は含まない。その際、図2に示すようにバルブ10の長手方向の中心軸Zと二重巻きコイル部の中心軸Yとは略一致させつつ、バルブ10の長手方向の中心軸Zを光軸Xからずらすことにより、二重巻きコイル部15を光軸Xと交差させてもよいし、図示はしていないが反射鏡2の光軸Xとバルブ10の長手方向の中心軸Zとは略一致させつつ、二重巻きコイル部15の中心軸Yをバルブ10の長手方向の中心軸Zからずらすことにより、二重巻きコイル部15を光軸Xと交差させてもよい。   Here, as shown in FIGS. 2 and 3, the positional relationship between the double-winding coil portion 15 and the optical axis X of the reflecting mirror 2 is such that the central axis Y in the longitudinal direction of the double-winding coil portion 15 is the reflecting mirror 2. The double-wound coil section 15 and the optical axis X intersect each other so as not to coincide with the optical axis X. That is, the strand of the double-winding coil portion 15 and the optical axis X are directly crossed, and the portion of the double-winding coil portion 15 that intersects the optical axis X here includes a double-winding coil portion. The space of the inner diameter (mandrel diameter of the secondary coil) portion of the double-winding coil portion 15 through which the central axis Y in the longitudinal direction of 15 passes is not included. At that time, as shown in FIG. 2, the longitudinal center axis Z of the bulb 10 and the center axis Y of the double-winding coil portion are substantially aligned with each other, and the longitudinal center axis Z of the bulb 10 is shifted from the optical axis X. Accordingly, the double-winding coil portion 15 may intersect the optical axis X, and although not shown, the optical axis X of the reflecting mirror 2 and the central axis Z in the longitudinal direction of the bulb 10 are substantially matched. The double winding coil portion 15 may be crossed with the optical axis X by shifting the central axis Y of the double winding coil portion 15 from the central axis Z in the longitudinal direction of the bulb 10.

また、二重巻きコイル部15のコイル長をL[mm](図3参照)、コイル外径をR[mm](図3参照)とした場合、図4に示すようにコイル長Lおよびコイル外径Rは座標(L,R)で表される点(5.50,1.95)、点(7.50,1.75)、点(7.50,0.95)、点(5.50,1.15)を順次結んだ線分で囲まれた範囲内(ただし、前記線分上を含む)から選択された値を有する。その際、二重巻きコイル部15における他の寸法パラメータとして、定格電圧が110[V]であり、定格電力が略50[W]のハロゲン電球3において、二重巻きコイル部15(フィラメント11における発光部分)はその素線長が400[mm]以上500[mm]以下の範囲内で、素線径が0.042[mm]以上0.048[mm]以下の範囲内のものが用いられる。このとき、コイル長Lおよびコイル外径Rが前記範囲内に設定された場合、一次コイルのマンドレル径が0.20[mm]以上0.32[mm]以下の範囲内で、一次コイルのピッチが0.05[mm]以上0.08[mm]以下の範囲内で、二次コイルのマンドレル径が0.4[mm]以上1.2[mm]以下の範囲内で、二次コイルのピッチが0.5[mm]以上0.9[mm]以下の範囲内でそれぞれ設定される。   Further, when the coil length of the double-winding coil portion 15 is L [mm] (see FIG. 3) and the coil outer diameter is R [mm] (see FIG. 3), the coil length L and the coil as shown in FIG. The outer diameter R is a point (5.50, 1.95), a point (7.50, 1.75), a point (7.50, 0.95), a point (5) represented by coordinates (L, R). .50, 1.15) in a range surrounded by line segments (including the above line segment). At that time, as another dimensional parameter in the double-winding coil portion 15, in the halogen bulb 3 having a rated voltage of 110 [V] and a rated power of approximately 50 [W], the double-winding coil portion 15 (in the filament 11). The light emitting part) has a strand length in the range of 400 [mm] to 500 [mm] and a strand diameter in the range of 0.042 [mm] to 0.048 [mm]. . At this time, when the coil length L and the coil outer diameter R are set within the above ranges, the primary coil pitch is within a range where the mandrel diameter of the primary coil is 0.20 [mm] or more and 0.32 [mm] or less. Is in the range of 0.05 [mm] to 0.08 [mm], and the secondary coil mandrel diameter is in the range of 0.4 [mm] to 1.2 [mm]. The pitch is set within a range of 0.5 [mm] or more and 0.9 [mm] or less.

以上のとおり本発明の実施の形態にかかる反射鏡付きハロゲン電球1の構成によれば、フィラメント11に三重巻きコイルを用いることなく二重巻きコイルを用いながら、フィラメント11を耐衝撃性を十分に確保しつつコンパクト化することができ、消費電力(定格電力)を50[W]としながらも、従来の定格電圧110[V]、定格電力65[W]の反射鏡付きハロゲン電球の中心照度とほぼ同じ程度の中心照度を確保することができる。特に、フィラメント11をコンパクト化するに当たり、従来、コイル長Lを短くするとコイル外径Rを大きくせざるを得ず、そのために耐衝撃性が著しく低下する傾向にあったが、コイル長Lとコイル外径Rとを最適化する中で二重巻きコイル部15を反射鏡2の光軸Xと交差させることにより、コイル長Lおよびコイル外径Rをフィラメント11全体の機械的強度を確保できる程度に留めて耐衝撃性が低下するのを抑制し、上記したように所望の中心照度を確保することができる。   As described above, according to the configuration of the halogen light bulb 1 with a reflector according to the embodiment of the present invention, the filament 11 has sufficient impact resistance while the double winding coil is used as the filament 11 without using the triple winding coil. The center illuminance of a conventional halogen bulb with a reflector with a rated voltage of 110 [V] and a rated power of 65 [W] can be reduced while ensuring a compact size while maintaining power consumption (rated power) of 50 [W]. A central illuminance of approximately the same level can be secured. In particular, in order to make the filament 11 compact, conventionally, if the coil length L is shortened, the outer diameter R of the coil has to be increased, and for this reason, the impact resistance tends to be significantly reduced. By optimizing the outer diameter R, the coil length L and the outer diameter R can be ensured to ensure the mechanical strength of the entire filament 11 by intersecting the double coil portion 15 with the optical axis X of the reflecting mirror 2. It is possible to prevent the impact resistance from being lowered and to secure a desired central illuminance as described above.

また、このような反射鏡付きハロゲン電球1の配光特性を評価したところ、照射面の輪郭がはっきりとした配光特性が得られ、空間照明における明暗をはっきりとさせたい場合の用途に適切である。   In addition, when the light distribution characteristics of such a halogen bulb 1 with a reflecting mirror were evaluated, a light distribution characteristic with a clear outline of the irradiated surface was obtained, which is suitable for applications where it is desired to clarify the light and darkness in spatial illumination. is there.

次に、本発明の実施の形態である反射鏡付きハロゲン電球1(以下、単に「本発明品」という)の作用効果を確認するための実験を行った。   Next, an experiment was conducted to confirm the operational effect of the halogen light bulb 1 with a reflecting mirror (hereinafter simply referred to as “the product of the present invention”) according to an embodiment of the present invention.

上記した本発明品において、表1に示すようにフィラメント11の二重巻きコイル部15の寸法のみを、すなわちコイル長Lを5.0[mm]以上8.0[mm]以下の範囲内で、同じくコイル外径Rを0.70[mm]以上2.30[mm]以下の範囲内で種々変化させたサンプル(No.1〜No.35)をそれぞれ5本ずつ作製し、それらの中心照度[lx]を測定するとともに、それらの耐衝撃性について評価を行った。その結果をそれぞれ表1に示す。   In the above-described product of the present invention, as shown in Table 1, only the dimension of the double-winding coil portion 15 of the filament 11, that is, the coil length L is within the range of 5.0 [mm] to 8.0 [mm]. In the same manner, five samples (No. 1 to No. 35) with various changes in the coil outer diameter R within the range of 0.70 [mm] or more and 2.30 [mm] or less were prepared, and their centers The illuminance [lx] was measured and the impact resistance was evaluated. The results are shown in Table 1, respectively.

「中心照度」の評価は、各サンプルを定格どおりで点灯させ、サンプルから距離1[m]離れた照射面における中心照度[lx]を測定した。そして、表1では、各サンプルの中心照度の値を絶対値ではなく、従来の定格電力65[W](定格電圧110[V])の反射鏡付きハロゲン電球の中心照度(3000[lx])を100とした場合の相対値で表している。ただし、その相対値は5本のサンプルの平均値であり、表1中「−」で示したサンプルは後述するように耐衝撃性が得られなかったので評価していない。また評価の際、相対値として95以上であれば、実用上、従来の定格電力65[W]の反射鏡付きハロゲン電球の中心照度とほぼ同じであるといえるために、95以上を良否の判定基準とした。   In the evaluation of “center illuminance”, each sample was lit as rated, and the center illuminance [lx] on the irradiated surface at a distance of 1 [m] from the sample was measured. In Table 1, the value of the central illuminance of each sample is not an absolute value, but the central illuminance (3000 [lx]) of a conventional halogen lamp with a reflector having a rated power of 65 [W] (rated voltage 110 [V]). Is expressed as a relative value where 100 is 100. However, the relative value is an average value of five samples, and the samples indicated by “−” in Table 1 were not evaluated because impact resistance was not obtained as described later. In the evaluation, if the relative value is 95 or more, it can be said that it is practically almost the same as the central illuminance of a conventional halogen lamp with a reflector having a rated power of 65 [W]. Standard.

「耐衝撃性」の評価には次のような振動試験を用いた。まず、上記した各サンプルを、口金を上方にして定格どおりで点灯させる。この状態のままで各サンプルに0.6[G]の力を加え、かつ10[Hz]以上100[Hz]以下の範囲で20分間振動させる。この動作を1回として連続して60回繰り返す。そして、この振動試験によるフィラメント11の断線有無を評価する。ただし、5本のサンプルのうち1本でも断線したものがあった場合は「有」の評価とした。   The following vibration test was used for the evaluation of “impact resistance”. First, each sample mentioned above is lighted as rated with the base upward. In this state, a force of 0.6 [G] is applied to each sample, and the sample is vibrated for 20 minutes in the range of 10 [Hz] to 100 [Hz]. This operation is repeated 60 times continuously as one time. Then, the presence or absence of breakage of the filament 11 by this vibration test is evaluated. However, if one of the five samples was disconnected, the evaluation was “Yes”.

なお、上記したようにコイル長Lおよびコイル外径Rを種々変化させるに当たり、二重巻きコイル部15の他の寸法パラメータ(マンドレル径やピッチ)については上記した範囲内で適宜設定した。通常、コイル長Lを一定にした場合、一次コイルのマンドレル径を小さくし、かつ二次コイルのマンドレル径を大きくすることによってコイル外径Rを大きくすることができる。一方、コイル長Lを一定にした場合、一次コイルのマンドレル径を大きくし、かつ二次コイルのマンドレル径を小さくすることによってコイル外径Rを小さくすることができる。   In addition, when changing the coil length L and the coil outer diameter R variously as described above, other dimensional parameters (mandrel diameter and pitch) of the double winding coil portion 15 were appropriately set within the above-described range. Normally, when the coil length L is constant, the coil outer diameter R can be increased by reducing the mandrel diameter of the primary coil and increasing the mandrel diameter of the secondary coil. On the other hand, when the coil length L is constant, the coil outer diameter R can be reduced by increasing the mandrel diameter of the primary coil and decreasing the mandrel diameter of the secondary coil.

反射鏡2には最大外径(口径)が50[mm]、ビーム角が20[°]のものを用いている。また、バルブ10には可視光透過赤外線反射膜等のような光干渉膜は形成していない。   The reflecting mirror 2 has a maximum outer diameter (aperture) of 50 [mm] and a beam angle of 20 [°]. The bulb 10 is not formed with a light interference film such as a visible light transmitting infrared reflection film.

Figure 0004735656
Figure 0004735656

表1から明らかなように、フィラメント11における二重巻きコイル部15のコイル長Lおよびコイル外径Rが座標(L,R)で表される点(5.50,1.95)、点(7.50,1.75)、点(7.50,0.95)、点(5.50,1.15)を順次結んだ線分で囲まれた範囲内(ただし、前記線分上を含む)から選択された値、例えば点(5.50,1.95)、点(5.50,1.55)、点(5.50,1.15)、点(6.00,1.90)、点(5.50,1.55)、点(5.50,1.15)、点(6.00,1.90)、点(6.00,1.50)、点(6.00,1.10)、点(6.50,1.85)、点(6.50,1.45)、点(6.50,1.05)、点(7.00,1.80)、点(7.00,1.40)、点(7.00,1.00)、点(7.50,1.75)、点(7.50,1.35)および点(7.50,0.95)である場合、中心照度が従来の定格電力65[W]の反射鏡付きハロゲン電球の中心照度とほぼ同じであるとともに、耐衝撃性も実用上十分耐え得るものであることが確認された。一方、コイル長Lおよびコイル外径Rが座標(L,R)で表される点(5.50,1.95)、点(7.50,1.75)、点(7.50,0.95)、点(5.50,1.15)を順次結んだ線分で囲まれた範囲外(ただし、前記線分上を含まない)の値、例えば点(5.00,2.30)、点(5.00,2.00)、点(5.00,1.60)、点(5.00,1.20)、点(5.00,1.00)、点(5.50,2.25)、点(5.50,0.95)、点(6.00,2.20)、点(6.00,0.90)、点(6.50,2.15)、点(6.50,0.85)、点(7.00,2.10)、点(7.00,0.80)、点(7.50,2.05)、点(7.50,0.75)、点(8.00,2.00)、点(8.00,1.70)、点(8.00,1.30)、点(8.00,0.90)および点(8.00,0.70)である場合、上記した振動試験によってフィラメントが断線し、一部のものについては中心照度が従来の定格電力65[W]の反射鏡付きハロゲン電球の中心照度に比してかなり下回ることが確認された。このような結果となったのは、特にコイル長Lが5.00[mm]の場合、二次コイルのピッチ間隔が狭くなりすぎて両者間で容易にピッチタッチし、それに起因して消費電力が過剰に上昇してフィラメントが溶断したためであると考えられる。また、座標(L,R)が点(5.00,1.00)、点(5.50,0.95)、点(6.00,0.90)、点(6.50,0.85)、点(7.00,0.80)、点(7.50,0.75)および点(8.00,0.70)の場合、一次コイルおよび二次コイルともにピッチ間隔が狭くなりすぎて上記と同様にフィラメントが溶断したためであると考えられる。もっとも、これらの場合においてフィラメントの機械的強度の不足も影響していると考えられる。   As is clear from Table 1, the coil length L and the coil outer diameter R of the double-wound coil portion 15 in the filament 11 are represented by coordinates (L, R) (5.50, 1.95), point ( 7.50, 1.75), point (7.50, 0.95), point (5.50, 1.15) within the range surrounded by the line segment (however, above the line segment) Values selected from, for example, point (5.50, 1.95), point (5.50, 1.55), point (5.50, 1.15), point (6.00, 1.95). 90), point (5.50, 1.55), point (5.50, 1.15), point (6.00, 1.90), point (6.00, 1.50), point (6) .00, 1.10), point (6.50, 1.85), point (6.50, 1.45), point (6.50, 1.05), point (7.00, 1.80) ), Point (7.00, 1. 0), point (7.00, 1.00), point (7.50, 1.75), point (7.50, 1.35) and point (7.50, 0.95), It was confirmed that the central illuminance is almost the same as the central illuminance of a conventional halogen lamp with a reflector having a rated power of 65 [W], and the impact resistance is sufficiently practical. On the other hand, the point (5.50, 1.95), the point (7.50, 1.75), the point (7.50, 0) in which the coil length L and the coil outer diameter R are represented by coordinates (L, R). .95), a value outside the range surrounded by the line segment connecting the points (5.50, 1.15) in sequence (but not including the line segment), for example, a point (5.00, 2.30). ), Point (5.00, 2.00), point (5.00, 1.60), point (5.00, 1.20), point (5.00, 1.00), point (5. 50, 2.25), point (5.50, 0.95), point (6.00, 2.20), point (6.00, 0.90), point (6.50, 2.15) , Point (6.50, 0.85), point (7.00, 2.10), point (7.00, 0.80), point (7.50, 2.05), point (7.50) , 0.75), point (8.00, 2.00), point (8.00) 1.70), point (8.00, 1.30), point (8.00, 0.90) and point (8.00, 0.70), the filament was broken by the vibration test described above. In some cases, it was confirmed that the central illuminance was considerably lower than the central illuminance of a conventional halogen lamp with a reflector having a rated power of 65 [W]. This is because, especially when the coil length L is 5.00 [mm], the pitch interval of the secondary coil becomes too narrow and the pitch touch is easily performed between the two, resulting in power consumption. This is considered to be because the filament rose excessively and the filament was melted. Also, the coordinates (L, R) are point (5.00, 1.00), point (5.50, 0.95), point (6.00, 0.90), point (6.50, 0.00). 85), point (7.00, 0.80), point (7.50, 0.75), and point (8.00, 0.70), the pitch interval between the primary coil and the secondary coil becomes narrow. This is considered to be because the filament was blown out as described above. However, in these cases, it is considered that the lack of mechanical strength of the filament also has an influence.

なお、上記した実施の形態では、反射鏡2としてビーム角が20[°]のものを用いた場合について説明したが、これに限らずビーム角が例えば7[°]以上13[°]以下の狭角のものや、例えば26[°]以上44[°]以下の広角のものを用いた場合でもそれぞれのビーム角に応じて上記と同様の作用効果を得ることができる。   In the embodiment described above, the case where the reflecting mirror 2 has a beam angle of 20 [°] has been described. However, the present invention is not limited to this, and the beam angle is, for example, 7 [°] or more and 13 [°] or less. Even in the case of using a narrow angle or a wide angle of, for example, 26 [°] or more and 44 [°] or less, the same effect as described above can be obtained according to each beam angle.

本発明は、フィラメントをコンパクト化し、中心照度をほとんど低下させることなく、低消費電力化させることが必要な用途にも適用することができる。   The present invention can also be applied to applications where it is necessary to make the filament compact and reduce the power consumption without substantially reducing the central illuminance.

本発明の第1の実施の形態である反射鏡付きハロゲン電球の一部切欠正面図1 is a partially cutaway front view of a halogen bulb with a reflector according to a first embodiment of the present invention. 同じく反射鏡付きハロゲン電球に用いられているハロゲン電球の一部切欠正面図A partially cutaway front view of a halogen bulb that is also used in a halogen bulb with a reflector 同じく反射鏡付きハロゲン電球に用いられているフィラメントの正面図Front view of filament used in halogen bulb with reflector 同じく反射鏡付きハロゲン電球に用いられているフィラメントにおけるコイル長Lとコイル外径Rとの関係を座標(L,R)で表した図The figure which represented the relationship between the coil length L and the coil outer diameter R in the filament similarly used for the halogen light bulb with a reflecting mirror by the coordinate (L, R).

符号の説明Explanation of symbols

1 反射鏡付きハロゲン電球
2 反射鏡
3 ハロゲン電球
4 開口部
5 ネック部
6 反射面
7 前面ガラス
8 接着剤
9 口金
10 バルブ
11 フィラメント
12 チップオフ部
13 発光部
14 封止部
15 二重巻きコイル部
16 とばし部
17 脚部
18,19 内部リード線
20,21 金属箔
22,23 外部リード線
24,25 端子部
DESCRIPTION OF SYMBOLS 1 Halogen bulb with a reflector 2 Reflector 3 Halogen bulb 4 Opening 5 Neck part 6 Reflecting surface 7 Front glass 8 Adhesive 9 Base 10 Valve 11 Filament 12 Chip-off part 13 Light emitting part 14 Sealing part 15 Double coil part 16 Skip portion 17 Leg portion 18, 19 Internal lead wire 20, 21 Metal foil 22, 23 External lead wire 24, 25 Terminal portion

Claims (1)

反射鏡と、この反射鏡内に組み込まれ、かつ内部にフィラメントが配置されたバルブを有するハロゲン電球とを備えた定格電圧が110[V]であり、定格電力が略50[W]の反射鏡付き管球であって、
前記フィラメントは前記反射鏡の光軸方向に延びる略直線状の二重巻きコイル部を有し、かつ前記二重巻きコイル部の素線が前記反射鏡の光軸と交差しており、
前記フィラメントにおける二重巻きコイル部のコイル長をL[mm]、コイル外径をR[mm]とした場合、前記コイル長Lおよび前記コイル外径Rは座標(L,R)で表される点(5.50,1.95)、点(7.50,1.75)、点(7.50,0.95)、点(5.50,1.15)を順次結んだ線分で囲まれた範囲内(ただし、前記線分上を含む)から選択された値を有し、
前記二重巻きコイル部は、その素線長が400[mm]以上500[mm]以下の範囲内、素線径が0.042[mm]以上0.048[mm]以下の範囲内、一次コイルのマンドレル径が0.20[mm]以上0.32[mm]以下の範囲内、一次コイルのピッチが0.05[mm]以上0.08[mm]以下の範囲内、二次コイルのマンドレル径が0.4[mm]以上1.2[mm]以下の範囲内、二次コイルのピッチが0.5[mm]以上0.9[mm]以下の範囲内にそれぞれ設定される、
ことを特徴とする反射鏡付き管球。
A reflector having a rated voltage of 110 [V] and a rated power of approximately 50 [W], comprising a reflector and a halogen bulb having a bulb incorporated in the reflector and having a filament disposed therein. A tube,
The filament has a substantially straight double-winding coil portion extending in the optical axis direction of the reflecting mirror, and the strand of the double-winding coil portion intersects the optical axis of the reflecting mirror,
When the coil length of the double-winding coil portion in the filament is L [mm] and the coil outer diameter is R [mm], the coil length L and the coil outer diameter R are represented by coordinates (L, R). A line segment connecting point (5.50, 1.95), point (7.50, 1.75), point (7.50, 0.95), and point (5.50, 1.15) in sequence. within enclosed (although the line segment including the above) have a value selected from,
The double-winding coil section has a wire length in a range of 400 [mm] to 500 [mm], a wire diameter in a range of 0.042 [mm] to 0.048 [mm], primary The coil mandrel diameter is in the range of 0.20 [mm] to 0.32 [mm], the primary coil pitch is in the range of 0.05 [mm] to 0.08 [mm], the secondary coil The mandrel diameter is set within a range of 0.4 [mm] to 1.2 [mm], and the secondary coil pitch is set within a range of 0.5 [mm] to 0.9 [mm], respectively.
A tube with a reflector.
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JPH06150890A (en) * 1992-10-30 1994-05-31 Toshiba Lighting & Technol Corp Lamp with mirror and installation method and installation apparatus thereof
JP2000164021A (en) * 1998-11-20 2000-06-16 Ichikoh Ind Ltd Headlight
JP2000231907A (en) * 1998-11-30 2000-08-22 Toshiba Lighting & Technology Corp Tungsten halogen lamp, lamp with reflector and luminaire
JP2004146125A (en) * 2002-10-22 2004-05-20 Matsushita Electric Ind Co Ltd Halogen lamp with reflecting mirror
JP2006059826A (en) * 2005-11-07 2006-03-02 Matsushita Electric Ind Co Ltd Tungsten halogen lamp with reflecting mirror
JP2007294393A (en) * 2006-03-30 2007-11-08 Matsushita Electric Ind Co Ltd Incandescent lamp, reflector incandescent lamp, and lighting apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06150890A (en) * 1992-10-30 1994-05-31 Toshiba Lighting & Technol Corp Lamp with mirror and installation method and installation apparatus thereof
JP2000164021A (en) * 1998-11-20 2000-06-16 Ichikoh Ind Ltd Headlight
JP2000231907A (en) * 1998-11-30 2000-08-22 Toshiba Lighting & Technology Corp Tungsten halogen lamp, lamp with reflector and luminaire
JP2004146125A (en) * 2002-10-22 2004-05-20 Matsushita Electric Ind Co Ltd Halogen lamp with reflecting mirror
JP2006059826A (en) * 2005-11-07 2006-03-02 Matsushita Electric Ind Co Ltd Tungsten halogen lamp with reflecting mirror
JP2007294393A (en) * 2006-03-30 2007-11-08 Matsushita Electric Ind Co Ltd Incandescent lamp, reflector incandescent lamp, and lighting apparatus

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