JP3627778B2 - Metal halide lamp with built-in starter - Google Patents

Metal halide lamp with built-in starter Download PDF

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JP3627778B2
JP3627778B2 JP20548696A JP20548696A JP3627778B2 JP 3627778 B2 JP3627778 B2 JP 3627778B2 JP 20548696 A JP20548696 A JP 20548696A JP 20548696 A JP20548696 A JP 20548696A JP 3627778 B2 JP3627778 B2 JP 3627778B2
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Prior art keywords
ceramic capacitor
starter
heating resistor
linear
metal halide
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JPH1031979A (en
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繁幸 青木
健治 三村
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Iwasaki Denki KK
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Iwasaki Denki KK
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Description

【0001】
【発明の属する技術分野】
この発明は、非線形セラミックコンデンサを用いた始動器を内蔵したメタルハライドランプに関する。
【0002】
【従来の技術】
従来、メタルハライドランプ等の金属蒸気放電灯の始動器として、グローランプを用いた高圧パルス発生回路を備えた始動器の動作の安定性や寿命等の問題点を解消するため、非線形V−Q特性を有するチタン酸バリウム等を主体とする強誘電体からなる非線形セラミックコンデンサを用いたものが、使用されるようになっている。これは、非線形セラミックコンデンサの飽和特性を利用して、この非線形セラミックコンデンサに直列に接続した安定器のインダクタンスにより反サイクルごとにパルス電圧を発生させ、これをメタルハライドランプに印加して始動させるようにするものである。
【0003】
このようなランプは、発光管と非線形セラミックコンデンサと加熱用抵抗体と半導体スイッチとの直列回路で始動器を構成し、該発光管と並列に接続されて外球内に収納されている。
【0004】
【発明が解決しようとする課題】
又、特開平5−290985号として、非線形セラミックコンデンサに並列に加熱用抵抗体を接続すると共に近接して配置し、ランプ不点時に該加熱用抵抗体からの熱放射により、非線形セラミックコンデンサをキュリー温度以上に加熱し、非線形セラミックコンデンサを常誘電性にしてスイッチング特性を消失させ、パルスの発生を停止させるようにした始動器内蔵形高圧ナトリウムランプが提案されている。
【0005】
ところで、このように構成したランプにおいては、非線形セラミックコンデンサ加熱用抵抗体の抵抗値が小さいと、不点時は発熱量が大きいためにパルス停止時間は短くなるが、発生パルス電圧は小さくなる。一方、加熱用抵抗体の抵抗値が大きいと発生パルス電圧は大きくなるが、不点時の発熱量が少ないためパルス停止時間が長くなる。そのためパルス電圧をあまり下げずにパルスを停止させる必要がある。
【0006】
また、上記のように構成したランプにおいては、ランプの種類、ワット数、安定器、その他の条件の差異により、点灯に必要なパルス電圧が異なり、また高ワットになるほど、同一特性の非線形セラミックコンデンサを用いてもパルス電圧は低下する。このため、直径(電極膜の径)が異なる複数種類の非線形セラミックコンデンサを用意して、ランプの種類、ワット数等の条件に対応させて、非線形セラミックコンデンサとその加熱用抵抗体の抵抗値を選択して用いなければならないという問題がある。
そして、高圧ナトリウムランプにおいては、非線形セラミックコンデンサの体積と加熱用抵抗体の消費電力の比を110〜305mm/wに設定することにより、始動に必要なパルス電圧を発生し、なおかつランプ不点時に始動器のパルス発生を確実に停止することができるという提案がなされている。(特願平8ー91799号)
【0007】
しかし、高圧ナトリウムランプは外球内が真空であるのに対しメタルハライドランプでは外球内に窒素ガス等の不活性ガスが封入されているため抵抗体の熱が対流により奪われてしまう。そのため、上記提案では、メタルハライドランプにおいて、ランプ不点時に始動器のパルス発生を確実に停止することができないという問題点があった。
【0008】
本発明は、従来の非線形セラミックコンデンサを用いた始動器を内蔵したメタルハライドランプにおける上記問題点を解消するためになされたもので、どのような非線形セラミックコンデンサを用いても、始動に必要なパルス電圧が発生し、かつ不点時に確実にパルスの発生を停止させることの可能な非線形セラミックコンデンサ加熱用抵抗体を容易に選択設定できるようにしたランプ特性が優れた始動器内蔵形メタルハライドランプを提供することを目的とする。
【0009】
【課題を解決するための手段】
上記問題点を解決するため、請求項1記載の発明は、発光管に非線形セラミックコンデンサの電極膜上が無機ガラスでオーバーコートされたチタン酸バリウムを主成分とする非線形セラミックコンデンサを含む始動器を並列接続してなる始動器内蔵形であり、かつ外球内に窒素ガスを含む不活性ガスが封入されたメタルハライドランプにおいて、前記始動器は非線形セラミックコンデンサを含む回路に並列に接続され、前記始動器動作時に前記非線形セラミックコンデンサの温度をキュリー温度まで加熱可能な加熱用抵抗体を前記非線形セラミックコンデンサの端子リードと前記加熱用抵抗体の端部との距離Lを1〜5mmとし、かつ前記端子リードの溶接点と前記加熱用抵抗体のリードとの距離dを1〜5mmとして前記非線形セラミックコンデンサに近接対向させて配置すると共に、前記非線形セラミックコンデンサの体積と前記加熱用抵抗体の消費電力の比が51〜174mm/Wとなるように設定されていることを特徴とする始動器内蔵形メタルハライドランプとするものである。
【0010】
始動器を構成する非線形セラミックコンデンサのパルス発生機能は、安定器の2次開放電圧と非線形セラミックコンデンサの体積とその加熱用抵抗体の抵抗値、並びに非線形セラミックコンデンサと加熱用抵抗体との配置態様により決まる。
そこで、本発明においては、非線形セラミックコンデンサと加熱用抵抗体との対向距離、並びに非線形セラミックコンデンサと加熱用抵抗体との消費電力との関係を検討し、上記のように設定するもので、これにより通常の始動時には十分な大きさのパルス電圧を発生させると共に、不点時にはパルス電圧の発生を完全に停止させることが可能となる。
【0011】
【発明の実施の形態】
次に、実施の形態について説明する。図1は本発明にかかる始動器内蔵形メタルハライドランプの実施の形態を示す構成図である。1は発光管、2は非線形セラミックコンデンサで、チタン酸バリウム(BaTiO)を主成分とする直径18.0mm、厚さ1.0mmの円板上の焼結体の両面に直径16.0mmの銀電極膜を形成し、これに電極端子を接続した上、電極膜上を無機ガラスでオーバーコートしたものであり、キューリー温度は約90℃のものを用いる。3は非線形セラミックコンデンサ2の加熱用抵抗体であり、その抵抗値は20KΩである。4はブレークオーバー電圧が約150Vの双方向2端子サイリスタからなる半導体スイッチ、5は半導体スイッチ4に並列に接続され該半導体スイッチのON位相を安定化するための抵抗値30KΩの抵抗である。
【0012】
半導体スイッチ4のみは外球内には配置されず、口金部分に配置されるようになっている。又、6は熱応動スイッチ、7は始動補助抵抗である。なお、図中8a、8bは発光管1の両端に封着された主電極であり、又、一方の主電極8aに近接して補助電極9が封着してある。非線形セラミックコンデンサ2、加熱用抵抗体3、半導体スイッチ4、並列抵抗5、熱応動スイッチ6、抵抗値100KΩの始動補助抵抗7とで始動器を構成し、半導体スイッチを除いて、窒素ガスが封入された外球内に収容されてメタルハライドランプを構成している。
【0013】
次に、このように構成されているメタルハライドランプの動作について説明する。電源電圧が印加されると始動器によりパルス電圧が発生し、そのパルスは主電極8aと補助電極9及び主電極8aと8bとの間にかかる。
【0014】
そして、まず主電極8aと補助電極9との間にグロー放電が生じた後、主電極8aと8bとの間にアーク放電が生じる。
このように、主電極8aと補助電極9との間の狭いギャップから放電が始まるため、900V程度の比較的低いパルス電圧で容易に始動することができる。
【0015】
このように構成した400Wの始動器内蔵形メタルハライドランプは、非線形セラミックコンデンサの体積と加熱用抵抗体の消費電力の比は51〜174mm/wとなるものであるが、始動時には始動器から1150Vの高圧パルスが発生し容易に始動点灯し、一方、発光管への接続を外し不点状態で電源電圧を印加したところ、始動器のパルスの発生は2分5秒で停止した。
【0016】
本発明は、非線形セラミックコンデンサの体積と加熱用抵抗体の消費電力の比は51〜174mm/wとなるよう設定するものであるが、次に、このような設定にあたって行なった実験について説明する。
非線形セラミックコンデンサとしては、直径18.0mm、電極膜直径15.5mm、厚さ0.8mmのもの(FEC1)、直径15.5mm、電極膜直径13.5mm、厚さ1.2mmのもの(FEC2)、及び直径18.0mm、電極膜直径16.0mm、厚さ1.0mmのもの(FEC3)を用い、一方加熱用抵抗体としては、抵抗値が55KΩ、30KΩ、20KΩ、10KΩ、5KΩの1/4P型カーボン被膜抵抗体を用い、A=(非線形セラミックコンデンサの体積)/(加熱用抵抗体の消費電力)〔mm/W〕と、B=加熱用抵抗体の消費電力〔W〕=V/R(V:安定器の2次開放電圧200V、R:加熱用抵抗体の抵抗値)を測定し、パルス停止の有無と発生パルス電圧の評価を行なった結果を、表1に示す。なお、表1中○印はパルス停止あり、×印はパルス停止なし、△印はパルス停止するが発生パルス電圧が不十分を意味する。経験的に、メタルハライドランプでは安定器品種や配線長を考慮すると発生パルス電圧は900Vより高くすべきであることがわかっている。
【0017】
【表1】

Figure 0003627778
【0018】
表1から、Aの値すなわち非線形セラミックコンデンサの体積と加熱用抵抗体の消費電力の比が174mm/w以下であると、不点時のパルス発生を完全に停止させることができることがわかる。また、Aの値が51mm/w未満であると加熱用抵抗体の抵抗値が小さくなり、発生するパルス電圧が低下し通常の始動が困難となる。そこで、Aの値は、51〜174mm/wに規定することが必要となり、本発明ではAの値を、このように設定するものである。
【0019】
また、図2は図1に示した実施の形態における非線形セラミックコンデンサと加熱用抵抗体の配置態様を示す正面図及び側面図である。図中2は、非線形セラミックコンデンサ、2aは同端子リード、3は加熱用抵抗体、3aは同リードである。前記非線形セラミックコンデンサ2の端子リード2aと前記加熱用抵抗体3の端部との距離Lを1〜5mmとしているのは、Lが1mm未満では、非線形セラミックコンデンサのリード端子を抵抗のリードに溶接することは困難となり、非線形セラミックコンデンサを破損するおそれがあり、またLが5mmを越えると、対向位置がずれてパルスが停止するまでの時間が室温(25℃)で5分を越えてしまうからである。なお、パルスの停止は室温で5分以内を目標としている。
【0020】
また、非線形セラミックコンデンサ2の端子リード2aの溶接点と加熱用抵抗体3のリード3aとの距離Dを1〜5mmとしている理由は、Dが1mm未満では非線形セラミックコンデンサの端子リードと加熱用抵抗体のリードの溶接が困難であって、非線形セラミックコンデンサを破損するおそれがあり、また、Dが5mmを越えるとランプが輸送中などに置いて落下した場合などに、非線形セラミックコンデンサの端子リードが曲がってしまうおそれがあるので、上記範囲に設定している。
【0021】
【発明の効果】
以上実施の形態に基づいて説明したように、本発明によれば、非線形セラミックコンデンサ加熱用抵抗体を該非線形セラミックコンデンサに対して近接して対向配置すると共に、非線形セラミックコンデンサの体積と加熱用抵抗体の消費電力の比が51〜174mm/wとなるように設定したので、始動に必要なパルス電圧を発生し、なおかつランプ不点時に始動器のパルス発生を確実に停止することができる等の利点がある。
【図面の簡単な説明】
【図1】本発明に係る始動器内蔵形メタルハライドランプの実施の形態を示す回路構成図である。
【図2】図1に示した実施の形態における非線形セラミックコンデンサと加熱用抵抗体の配置態様を示す正面図及び側面図である。
【符号の説明】
1.発光管
2.非線形セラミックコンデンサ
3.加熱用抵抗体
4.半導体スイッチ
5.抵抗体
6.熱応動スイッチ
7.始動補助抵抗
8a.主電極
8b.主電極
9.補助電極[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a metal halide lamp having a built-in starter using a nonlinear ceramic capacitor.
[0002]
[Prior art]
Conventionally, as a starter of a metal vapor discharge lamp such as a metal halide lamp, a nonlinear VQ characteristic is used in order to eliminate problems such as operation stability and life of a starter having a high pressure pulse generation circuit using a glow lamp. Those using a non-linear ceramic capacitor made of a ferroelectric material mainly composed of barium titanate or the like having the above has been used. This utilizes the saturation characteristics of a non-linear ceramic capacitor to generate a pulse voltage every anti-cycle by the inductance of a ballast connected in series to the non-linear ceramic capacitor and apply this to a metal halide lamp to start it. To do.
[0003]
Such a lamp forms a starter by a series circuit of an arc tube, a non-linear ceramic capacitor, a heating resistor, and a semiconductor switch, and is connected in parallel to the arc tube and accommodated in an outer sphere.
[0004]
[Problems to be solved by the invention]
Further, as disclosed in Japanese Patent Laid-Open No. 5-290985, a heating resistor is connected in parallel to a non-linear ceramic capacitor and is disposed close to the non-linear ceramic capacitor. A high pressure sodium lamp with a built-in starter has been proposed in which the nonlinear ceramic capacitor is heated to a temperature higher than that of the dielectric to make the switching characteristics disappear and the generation of pulses is stopped.
[0005]
By the way, in the lamp configured as described above, if the resistance value of the heating element for heating the non-linear ceramic capacitor is small, the heat generation amount is large at the time of failure, so that the pulse stop time is short, but the generated pulse voltage is small. On the other hand, if the resistance value of the heating resistor is large, the generated pulse voltage becomes large, but the pulse stop time becomes long because the amount of heat generated at the time of failure is small. Therefore, it is necessary to stop the pulse without reducing the pulse voltage so much.
[0006]
In addition, in the lamp configured as described above, the pulse voltage required for lighting varies depending on the lamp type, wattage, ballast, and other conditions, and the higher the wattage, the non-linear ceramic capacitor having the same characteristics. Even if is used, the pulse voltage decreases. For this reason, multiple types of non-linear ceramic capacitors with different diameters (electrode film diameters) are prepared, and the resistance values of the non-linear ceramic capacitors and their heating resistors are set according to the conditions such as lamp type and wattage. There is a problem that it must be selected and used.
In the high-pressure sodium lamp, the ratio of the volume of the non-linear ceramic capacitor and the power consumption of the heating resistor is set to 110 to 305 mm 3 / w, thereby generating a pulse voltage necessary for starting, Sometimes it has been proposed that the pulse generation of the starter can be stopped reliably. (Japanese Patent Application No. 8-91799)
[0007]
However, the high-pressure sodium lamp has a vacuum inside the outer sphere, whereas the metal halide lamp encloses an inert gas such as nitrogen gas in the outer sphere, so the heat of the resistor is taken away by convection. Therefore, the above proposal has a problem that the pulse generation of the starter cannot be stopped reliably when the lamp is not working in the metal halide lamp.
[0008]
The present invention has been made in order to solve the above-mentioned problems in a metal halide lamp having a built-in starter using a non-linear ceramic capacitor. The pulse voltage required for starting is whatever the non-linear ceramic capacitor is used. Provided is a metal halide lamp with a built-in starter with excellent lamp characteristics that can easily select and set a non-linear ceramic capacitor heating resistor capable of reliably stopping the generation of pulses in the event of a failure. For the purpose.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention according to claim 1 includes a starter including a non-linear ceramic capacitor mainly composed of barium titanate in which an arc tube is overcoated with an inorganic glass on an electrode film of the non-linear ceramic capacitor. In a metal halide lamp having a built-in starter that is connected in parallel and in which an inert gas containing nitrogen gas is sealed in an outer sphere, the starter is connected in parallel to a circuit including a non-linear ceramic capacitor, and the starting A heating resistor capable of heating the temperature of the nonlinear ceramic capacitor to a Curie temperature during operation of the device is set such that a distance L between a terminal lead of the nonlinear ceramic capacitor and an end of the heating resistor is 1 to 5 mm, and the terminal the nonlinear ceramic distance d between the lead welding point and the lead of the heating resistor as 1~5mm While disposed close face the capacitor, internal starter the ratio of power consumption of the volume and the heating resistor of the non-linear ceramic capacitor is characterized in that it is set to be 51~174mm 3 / W This is a metal halide lamp.
[0010]
The pulse generation function of the non-linear ceramic capacitor constituting the starter includes the secondary open circuit voltage of the ballast, the volume of the non-linear ceramic capacitor, the resistance value of the heating resistor, and the arrangement of the non-linear ceramic capacitor and the heating resistor. It depends on.
Therefore, in the present invention, the relationship between the facing distance between the nonlinear ceramic capacitor and the heating resistor and the power consumption between the nonlinear ceramic capacitor and the heating resistor is studied and set as described above. Thus, it is possible to generate a sufficiently large pulse voltage at the time of normal starting, and to completely stop the generation of the pulse voltage at the time of failure.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments will be described. FIG. 1 is a block diagram showing an embodiment of a metal halide lamp with a built-in starter according to the present invention. 1 is an arc tube, 2 is a non-linear ceramic capacitor having a diameter of 16.0 mm on both sides of a sintered body on a disc having a diameter of 18.0 mm and a thickness of 1.0 mm mainly composed of barium titanate (BaTiO 3 ). A silver electrode film is formed, an electrode terminal is connected to this, and the electrode film is overcoated with inorganic glass. A Curie temperature of about 90 ° C. is used. Reference numeral 3 denotes a heating resistor of the non-linear ceramic capacitor 2, and its resistance value is 20 KΩ. Reference numeral 4 denotes a semiconductor switch composed of a bidirectional two-terminal thyristor having a breakover voltage of about 150 V. Reference numeral 5 denotes a resistor connected in parallel to the semiconductor switch 4 and having a resistance value of 30 KΩ for stabilizing the ON phase of the semiconductor switch.
[0012]
Only the semiconductor switch 4 is not disposed in the outer sphere, but is disposed in the base portion. Reference numeral 6 denotes a thermally responsive switch, and reference numeral 7 denotes a starting auxiliary resistor. In the drawing, 8a and 8b are main electrodes sealed at both ends of the arc tube 1, and an auxiliary electrode 9 is sealed in the vicinity of one main electrode 8a. A non-linear ceramic capacitor 2, a heating resistor 3, a semiconductor switch 4, a parallel resistor 5, a thermally responsive switch 6, and a starting auxiliary resistor 7 having a resistance value of 100 KΩ constitute a starter, and nitrogen gas is enclosed except for the semiconductor switch. The metal halide lamp is configured by being accommodated in the outer sphere.
[0013]
Next, the operation of the metal halide lamp configured as described above will be described. When the power supply voltage is applied, a pulse voltage is generated by the starter, and the pulse is applied between the main electrode 8a and the auxiliary electrode 9 and the main electrodes 8a and 8b.
[0014]
First, after glow discharge is generated between the main electrode 8a and the auxiliary electrode 9, arc discharge is generated between the main electrodes 8a and 8b.
Thus, since discharge starts from a narrow gap between the main electrode 8a and the auxiliary electrode 9, it is possible to easily start with a relatively low pulse voltage of about 900V.
[0015]
The 400 W starter built-in metal halide lamp configured in this manner has a ratio of the volume of the nonlinear ceramic capacitor and the power consumption of the heating resistor of 51 to 174 mm 3 / w. When the power supply voltage was applied in a non-pointed state by disconnecting the arc tube, the starter pulse generation was stopped in 2 minutes and 5 seconds.
[0016]
In the present invention, the ratio of the volume of the non-linear ceramic capacitor and the power consumption of the heating resistor is set to be 51 to 174 mm 3 / w. Next, an experiment performed for such setting will be described. .
Nonlinear ceramic capacitors have a diameter of 18.0 mm, an electrode film diameter of 15.5 mm, and a thickness of 0.8 mm (FEC1), a diameter of 15.5 mm, an electrode film diameter of 13.5 mm, and a thickness of 1.2 mm (FEC2). ) And a diameter of 18.0 mm, an electrode film diameter of 16.0 mm, and a thickness of 1.0 mm (FEC3), while the heating resistor has a resistance value of 55 KΩ, 30 KΩ, 20 KΩ, 10 KΩ, 5 KΩ. / 4P type carbon film resistor, A = (volume of non-linear ceramic capacitor) / (power consumption of heating resistor) [mm 3 / W] and B = power consumption of heating resistor [W] = Table 1 shows the results of measuring V 2 / R (V: secondary open-circuit voltage of the ballast 200 V, R: resistance value of the heating resistor) and evaluating the presence or absence of the pulse stop and the generated pulse voltage. . In Table 1, a circle mark indicates that the pulse is stopped, a cross mark indicates that the pulse is not stopped, and a triangle mark indicates that the pulse is stopped but the generated pulse voltage is insufficient. From experience, it has been found that in a metal halide lamp, the generated pulse voltage should be higher than 900 V in consideration of the type of ballast and the wiring length.
[0017]
[Table 1]
Figure 0003627778
[0018]
From Table 1, it can be seen that when the value of A, that is, the ratio of the volume of the non-linear ceramic capacitor and the power consumption of the heating resistor is 174 mm 3 / w or less, the pulse generation at the time of the failure can be stopped completely. On the other hand, if the value of A is less than 51 mm 3 / w, the resistance value of the heating resistor is reduced, the generated pulse voltage is lowered, and normal starting becomes difficult. Therefore, it is necessary to define the value of A to 51 to 174 mm 3 / w. In the present invention, the value of A is set in this way.
[0019]
FIG. 2 is a front view and a side view showing the arrangement of the nonlinear ceramic capacitor and the heating resistor in the embodiment shown in FIG. In the figure, 2 is a non-linear ceramic capacitor, 2a is the same terminal lead, 3 is a heating resistor, and 3a is the same lead. The distance L between the terminal lead 2a of the nonlinear ceramic capacitor 2 and the end of the heating resistor 3 is set to 1 to 5 mm. When L is less than 1 mm, the lead terminal of the nonlinear ceramic capacitor is welded to the resistance lead. It may be difficult to damage the non-linear ceramic capacitor, and if L exceeds 5 mm, the time until the pulse stops when the facing position shifts exceeds 5 minutes at room temperature (25 ° C.). It is. Note that the pulse stop is targeted within 5 minutes at room temperature.
[0020]
The reason why the distance D between the welding point of the terminal lead 2a of the nonlinear ceramic capacitor 2 and the lead 3a of the heating resistor 3 is 1 to 5 mm is that if D is less than 1 mm, the terminal lead of the nonlinear ceramic capacitor and the heating resistor It is difficult to weld the lead of the body, which may damage the non-linear ceramic capacitor. Also, if D exceeds 5 mm, the terminal lead of the non-linear ceramic capacitor may be damaged when the lamp is dropped during transportation. Since it may bend, it is set to the above range.
[0021]
【The invention's effect】
As described above based on the embodiment, according to the present invention, the non-linear ceramic capacitor heating resistor is disposed close to and opposed to the non-linear ceramic capacitor, and the volume of the non-linear ceramic capacitor and the heating resistor are arranged. Since the power consumption ratio of the body is set to be 51 to 174 mm 3 / w, the pulse voltage necessary for starting can be generated, and the pulse generation of the starter can be surely stopped when the lamp is not working. There are advantages.
[Brief description of the drawings]
FIG. 1 is a circuit configuration diagram showing an embodiment of a metal halide lamp with a built-in starter according to the present invention.
FIGS. 2A and 2B are a front view and a side view showing an arrangement mode of a nonlinear ceramic capacitor and a heating resistor in the embodiment shown in FIG.
[Explanation of symbols]
1. Arc tube 2. 2. Non-linear ceramic capacitor 3. Heating resistor 4. Semiconductor switch Resistor 6. 6. Thermally responsive switch Starting auxiliary resistor 8a. Main electrode 8b. Main electrode 9. Auxiliary electrode

Claims (1)

発光管に非線形セラミックコンデンサの電極膜上が無機ガラスでオーバーコートされたチタン酸バリウムを主成分とする非線形セラミックコンデンサを含む始動器を並列接続してなる始動器内蔵形であり、かつ外球内に窒素ガスを含む不活性ガスが封入されたメタルハライドランプにおいて、前記始動器は非線形セラミックコンデンサを含む回路に並列に接続され、前記始動器動作時に前記非線形セラミックコンデンサの温度をキュリー温度まで加熱可能な加熱用抵抗体を前記非線形セラミックコンデンサの端子リードと前記加熱用抵抗体の端部との距離Lを1〜5mmとし、かつ前記端子リードの溶接点と前記加熱用抵抗体のリードとの距離dを1〜5mmとして前記非線形セラミックコンデンサに近接対向させて配置すると共に、前記非線形セラミックコンデンサの体積と前記加熱用抵抗体の消費電力の比が51〜174mm/Wとなるように設定されていることを特徴とする始動器内蔵形メタルハライドランプ。 It is a built-in starter type in which a starter including a non-linear ceramic capacitor mainly composed of barium titanate with an inorganic glass overcoating on the electrode tube of the non- linear ceramic capacitor is connected in parallel to the arc tube, and inside the outer sphere In the metal halide lamp in which an inert gas containing nitrogen gas is enclosed, the starter is connected in parallel to a circuit including a non-linear ceramic capacitor, and the temperature of the non-linear ceramic capacitor can be heated to the Curie temperature during the starter operation. The heating resistor has a distance L between the terminal lead of the nonlinear ceramic capacitor and the end of the heating resistor of 1 to 5 mm, and the distance d between the welding point of the terminal lead and the lead of the heating resistor the while disposed close facing the non-linear ceramic capacitor as 1 to 5 mm, the non Starter built-in metal halide lamp power ratio of the volume of the form ceramic capacitors said heating resistor, characterized in that it is set to be 51~174mm 3 / W.
JP20548696A 1996-07-17 1996-07-17 Metal halide lamp with built-in starter Expired - Fee Related JP3627778B2 (en)

Priority Applications (1)

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JP20548696A JP3627778B2 (en) 1996-07-17 1996-07-17 Metal halide lamp with built-in starter

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JPH1031979A JPH1031979A (en) 1998-02-03
JP3627778B2 true JP3627778B2 (en) 2005-03-09

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