JPH1186803A - Electric lamp having resistance therein - Google Patents
Electric lamp having resistance thereinInfo
- Publication number
- JPH1186803A JPH1186803A JP28423397A JP28423397A JPH1186803A JP H1186803 A JPH1186803 A JP H1186803A JP 28423397 A JP28423397 A JP 28423397A JP 28423397 A JP28423397 A JP 28423397A JP H1186803 A JPH1186803 A JP H1186803A
- Authority
- JP
- Japan
- Prior art keywords
- resistance element
- electric
- bimetal
- current
- lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、電気を通電して光源
として利用される電球に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light bulb used as a light source by supplying electricity.
【０００２】[0002]
【従来の技術】一般に電球には、電源を投入した瞬間、
通常使用時に流れる電流の数倍から数十倍の電流が一気
に流れる現象、すなわち突入電流と呼ばれる現象があ
る。この突入電流が流れるため、電球内の発光体である
フィラメントに多大な負担をかけ、結果として電源投入
時にフィラメントが切れてしまうというトラブルがしば
しば起こっていた。すなわち電球の寿命が尽きる一つの
原因となっていた。一方、電球の内部または外部に電気
抵抗素子を設け、この電気抵抗素子を通して電流を流せ
ば、突入電流は抑えられ、電源投入時にフィラメントが
切れてしまうというトラブルも減少するが、フィラメン
トに流れる電流を常時抑えるため、明るさを犠牲にしな
ければならなかった。また電球の外部に電気抵抗素子を
設けるということは、そのまま従来の電気設備を用いる
ことができないことを意味していた。2. Description of the Related Art Generally, at the moment when a power is turned on,
There is a phenomenon in which a current several times to several tens times the current flowing during normal use flows at once, that is, a phenomenon called an inrush current. Since this inrush current flows, a heavy load is applied to the filament, which is a light emitting body in the electric bulb, and as a result, a trouble that the filament breaks when the power is turned on often occurs. That is, this is one of the causes of the expiration of the life of the bulb. On the other hand, if an electric resistance element is provided inside or outside the light bulb and a current flows through this electric resistance element, the inrush current is suppressed, and the trouble that the filament is cut off when the power is turned on is reduced, but the current flowing through the filament is reduced. I had to sacrifice brightness to keep it constant. Providing an electric resistance element outside the light bulb also means that conventional electric equipment cannot be used as it is.
【０００３】[0003]
【本発明が解決しようとする課題】この発明は、従来の
電球が持つ問題点を解決する電球の提供を目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a light bulb which solves the problems of the conventional light bulb.
【０００４】[0004]
【課題を解決するための手段】本発明の電球は、電球内
に電気抵抗素子と導電性のバイメタルを設けたことを特
徴とする。The light bulb of the present invention is characterized in that an electric resistance element and a conductive bimetal are provided in the light bulb.
【０００５】[0005]
【作用】本発明の電球により、従来の電気設備を用いな
がら、従来の明るさを保ちつつ、電源投入時の突入電流
を抑えられるため、電球の寿命を大幅に拡大することが
できる。According to the light bulb of the present invention, the rush current at power-on can be suppressed while maintaining the conventional brightness while using the conventional electric equipment, so that the life of the light bulb can be greatly extended.
【０００６】[0006]
【実施例】図１は抵抗入り電球の内部構成をあらわした
ものである。この電球は、電球内部に電気抵抗素子Ｆと
導電性のバイメタルＧすなわち、熱膨張率の異なる２種
類の薄い金属板を１枚の板状に貼り合わせたもの、を備
えることを特徴とする。この電球に電源を投入する以前
は、バイメタルと導入線に設けられた電気接点Ｈ・Ｉ間
は開いている。電気接点Ｈ・Ｉ間は開いているため、電
源を投入した瞬間には、電球を流れる電流は、導入線Ｂ
とフィラメントＣ、そして電気抵抗素子Ｆを通して流れ
ることになる。電気抵抗素子Ｆを通して流れるため、電
源投入時に現れるはずの突入電流は、この電気抵抗素子
Ｆの分制限され、大きな電流値とはならない。電源を投
入すると、フィラメントＣは光とともに熱を発生するた
め、その熱によりバイメタルＧは曲げられ、電気接点Ｈ
・Ｉ間は閉じるようになる。この状態になると、電球を
流れる電流は電気抵抗素子Ｆを迂回して流れるようにな
り、電球本来の電流が流れ、明るさも本来の明るさとな
る。電源遮断後は、フィラメントＣから発生していた熱
はおさまるため、その熱で曲げられていたバイメタルＧ
は元に戻り、電気接点Ｈ・Ｉ間は開き、電球全体が電源
投入以前の状態に戻る。バイメタルＦの動作時間は、突
入電流を避けるため電源投入後、０．１秒程度に設定す
ればよく、明るさの変化に関しては、人間の視覚上問題
はない。また電気抵抗素子Ｆにはその動作時間の間しか
電流が流れないため、電気抵抗素子Ｆの電力容量はかな
り少なく見積ってもよい。よって電気抵抗素子Ｆの体積
は、電球内に収納可能な程度に抑えることができる。電
気接点Ｈ・Ｉは、Ａｇ−ＣｄＯやＡｇ−Ｎｉなど通常電
磁開閉器などに用いられる電気接点と同じ材質を用いる
のが好ましいが、電球の使用する電流・電圧が大きくな
ければ省略してもよく、直接バイメタルＧと導入線Ｂを
接触してもよい。FIG. 1 shows the internal structure of a bulb with resistance. This light bulb is characterized in that an electric resistance element F and a conductive bimetal G, that is, two kinds of thin metal plates having different coefficients of thermal expansion are bonded in a single plate shape inside the light bulb. Before turning on the light bulb, the electric contacts H and I provided on the bimetal and the lead-in wire are open. Since the open between the electrical contacts H · I, the moment the power is turned on, the current through the light bulb, the introduction line B
And the filament C and the electric resistance element F. Since the current flows through the electric resistance element F, the inrush current that should appear when the power is turned on is reduced by the electric resistance element.
The current is limited by F and does not become a large current value. When the power is turned on, the filament C generates heat together with light, so that the bimetal G is bent by the heat, and the electric contact H
・ Between I and close. In this state, the current flowing through the electric bulb bypasses the electric resistance element F, and the electric current inherent to the electric bulb flows, and the brightness becomes the original brightness. After the power is turned off, the heat generated from the filament C is reduced, and the bimetal G bent by the heat is cooled.
Returns to its original state, opens between the electrical contacts H and I , and the entire bulb returns to the state before the power was turned on. The operation time of the bimetal F may be set to about 0.1 second after the power is turned on in order to avoid a rush current, and there is no human visual problem regarding the change in brightness. Further, since only a current flows during the operating time to the electric resistance element F, the power capacity of the electric resistance element F may be estimated considerably less. Therefore, the volume of the electric resistance element F can be suppressed to a level that can be stored in the electric bulb. Electrical contacts H-I is preferably used the same material as the electrical contacts used in such Ag-CdO and Ag-Ni, etc. Usually the electromagnetic switch, be omitted if there is no large current and voltage to be used for the bulb Alternatively, the bimetal G and the introduction wire B may be directly in contact.
【０００７】[0007]
【発明の効果】本発明の電球により、従来の明るさを保
ちつつ、電源投入時の突入電流を抑えられるため、電球
の寿命を大幅に拡大することができる。また突入電流を
抑える装置をすべて電球内に収めることにより、従来の
電気設備をそのまま用いることができる。According to the light bulb of the present invention, the rush current when the power is turned on can be suppressed while maintaining the conventional brightness, so that the life of the light bulb can be greatly extended. In addition, since all devices for suppressing the inrush current are housed in the bulb, the conventional electric equipment can be used as it is.
【図１】抵抗入り電球の内部構成FIG. 1 shows the internal structure of a bulb with a resistor
【符号の説明】Ａ はガラス球、Ｂは導入線、Ｃはフイラメント、Ｄはス
テム、Ｅは口金、Ｆは電気抵抗素子、Ｇは導電性のバイ
メタル、Ｈはバイメタル側電気接点、Ｉは導入線側電気
接点。[Explanation of Signs] A is a glass bulb, B is a lead wire, C is a filament, D is a stem, E is a base, F is an electric resistance element, G is a conductive bimetal, H is a bimetal-side electrical contact, and I is an introduction. Wire side electrical contact.
Claims (1)
タルを設け、電源投入時は電気抵抗素子に電流が流れる
が、バイメタルが温まった後は、バイメタルに電流が流
れることにより、突入電流を制限しながらも従来の明る
さを保つ電球。An electric resistance element and a conductive bimetal are provided in a light bulb. When a power supply is turned on, a current flows through the electric resistance element, but after the bimetal is warmed, an electric current flows through the bimetal, so that an inrush current is generated. A light bulb that maintains the conventional brightness while limiting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28423397A JPH1186803A (en) | 1997-09-09 | 1997-09-09 | Electric lamp having resistance therein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28423397A JPH1186803A (en) | 1997-09-09 | 1997-09-09 | Electric lamp having resistance therein |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1186803A true JPH1186803A (en) | 1999-03-30 |
Family
ID=17675903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28423397A Pending JPH1186803A (en) | 1997-09-09 | 1997-09-09 | Electric lamp having resistance therein |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1186803A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000070653A1 (en) * | 1999-05-13 | 2000-11-23 | Nagafumi Tsukada | Lamp |
| US8958196B2 (en) | 2009-11-04 | 2015-02-17 | Uchiya Thermostat Co., Ltd. | Electric circuit connected to thermal switch with three terminals |
| US9000880B2 (en) | 2009-03-12 | 2015-04-07 | Uchiya Thermostat Co., Ltd. | Thermal protector |
| US9472363B2 (en) | 2009-03-12 | 2016-10-18 | Uchiya Thermostat Co., Ltd. | Thermal protector |
-
1997
- 1997-09-09 JP JP28423397A patent/JPH1186803A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000070653A1 (en) * | 1999-05-13 | 2000-11-23 | Nagafumi Tsukada | Lamp |
| US6316878B1 (en) | 1999-05-13 | 2001-11-13 | Nagafumi Tsukada | Electric-light bulb |
| US9000880B2 (en) | 2009-03-12 | 2015-04-07 | Uchiya Thermostat Co., Ltd. | Thermal protector |
| US9472363B2 (en) | 2009-03-12 | 2016-10-18 | Uchiya Thermostat Co., Ltd. | Thermal protector |
| US9484171B2 (en) | 2009-03-12 | 2016-11-01 | Uchiya Thermostat Co., Ltd. | Thermal protector |
| US8958196B2 (en) | 2009-11-04 | 2015-02-17 | Uchiya Thermostat Co., Ltd. | Electric circuit connected to thermal switch with three terminals |
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