JPS6127858B2 - - Google Patents
Info
- Publication number
- JPS6127858B2 JPS6127858B2 JP52127658A JP12765877A JPS6127858B2 JP S6127858 B2 JPS6127858 B2 JP S6127858B2 JP 52127658 A JP52127658 A JP 52127658A JP 12765877 A JP12765877 A JP 12765877A JP S6127858 B2 JPS6127858 B2 JP S6127858B2
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- approximately
- discharge
- outer bulb
- tube
- 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.)
- Expired
Links
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 26
- 229910052708 sodium Inorganic materials 0.000 claims description 26
- 239000011734 sodium Substances 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 229910003437 indium oxide Inorganic materials 0.000 claims description 8
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims description 8
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims 1
- 230000005469 synchrotron radiation Effects 0.000 claims 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- 229910052756 noble gas Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
Description
【発明の詳細な説明】
本発明はＵ字状細長い放電管と、この放電管を
囲む外方バルブとを具え、放電灯の断熱を放電管
を囲む内方の赤外線反射器により主として行な
い、円形円筒状の赤外線反射器はその表面積の少
くとも半分以上に亘つて放電管内の生成可視光を
透過性である低圧ナトリウム蒸気放電灯に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a U-shaped elongated discharge tube and an outer bulb surrounding the discharge tube. The cylindrical infrared reflector relates to a low pressure sodium vapor discharge lamp which is transparent over at least half of its surface area to the visible light produced within the discharge vessel.
この種類の低圧ナトリウム蒸気放電灯は、例え
ばオランダ国特許出願第6615717号に記述されて
いる。過剰のナトリウムを含有する低圧ナトリウ
ム蒸気放電灯は、一般に、放電灯の周囲温度が約
20℃であるときには、作動状態下の放電灯の放電
管の最低温点の温度が245〜265℃であるように作
動される。過剰のナトリウムとは、放電灯の作動
条件下で、放電管内に存在するナトリウムの一部
分が液体状であることを意味する。このような既
知放電灯の利点の一つは、光効率、例えばワツト
当りのルーメンで表した光効率が高いことであ
る。然し、放電灯に供給する電力例えばワツトも
比較的多い欠点がある。既知の放電灯を用いる場
合、放電管の最低温点の温度を245〜265℃に高め
て維持して、電流エネルギーをナトリウム光に最
も効率良く転換するためには、供給電力を多くし
なければならない。既知の放電灯は高い光効率を
得るためには、多大のエネルギーを供給源例えだ
電源から引出さなければならない欠点がある。 A low-pressure sodium vapor discharge lamp of this type is described, for example, in Dutch patent application no. 6615717. Low-pressure sodium vapor discharge lamps containing excess sodium are generally used when the ambient temperature of the discharge lamp is approximately
When the temperature is 20°C, the discharge lamp is operated so that the temperature of the lowest temperature point of the discharge tube under operating conditions is 245-265°C. Excess sodium means that under the operating conditions of the discharge lamp, a portion of the sodium present in the discharge vessel is in liquid form. One of the advantages of such known discharge lamps is their high light efficiency, eg expressed in lumens per watt. However, there is a drawback that the amount of power supplied to the discharge lamp, such as watts, is relatively large. When using a known discharge lamp, in order to raise and maintain the temperature at the lowest temperature point of the discharge tube between 245 and 265 degrees Celsius and convert current energy into sodium light most efficiently, the supplied power must be increased. It won't happen. Known discharge lamps have the disadvantage that in order to obtain a high light efficiency, a large amount of energy must be extracted from the source, for example a power supply.
本発明の一目的は、比較的小さな電力で高い光
効率を有する前述した種類の低圧ナトリウム蒸気
放電灯を提供するにある。 One object of the invention is to provide a low-pressure sodium vapor discharge lamp of the above-mentioned type which has a high light efficiency with a relatively low power consumption.
本発明は、一回は屈曲していても良い細長い放
電管と、この放電管を囲む外方バルブとを具え、
放電灯の断熱を放電管を囲む内方の赤外線反射器
により主として行い、この赤外線反射器はその表
面積の少くとも半分以上に亘つて放電管内の生成
可視光を透過性であり、ナトリウムが過剰に存在
し、放電灯の周囲温度が約20℃であるときには放
電灯の作動状態下の放電管の最低温点の温度が
245〜265℃である低圧ナトリウム蒸気放電灯にお
いて、放電灯の長さ即ち外方バルブの全長が18〜
27cmであり、放電灯の管径が約５cmであり、前記
温度範囲内の放電管の最低温点の温度が放電灯へ
の25ワツト以下約18ワツト以上の電力供給で達成
されるのに充分であるように放電灯の長さ以外の
寸法が小さいことを特徴とする。 The present invention comprises an elongated discharge tube that may be bent once, and an outer bulb surrounding the discharge tube,
Insulation of the discharge lamp is provided primarily by an inner infrared reflector surrounding the discharge tube, which is transparent over at least half of its surface area to the visible light produced within the discharge tube, and is free from excess sodium. When the ambient temperature of the discharge lamp is approximately 20℃, the temperature of the lowest temperature point of the discharge tube under the operating condition of the discharge lamp is
In a low-pressure sodium vapor discharge lamp with a temperature of 245 to 265℃, the length of the discharge lamp, that is, the total length of the outer bulb is 18 to
27 cm, the tube diameter of the discharge lamp is approximately 5 cm, and the temperature of the lowest temperature point of the discharge tube within the temperature range is sufficient to be achieved by supplying power of not more than 25 watts to approximately 18 watts or more to the discharge lamp. The discharge lamp is characterized by its small dimensions other than its length.
本発明の低圧ナトリウム蒸気放電灯は、電気エ
ネルギーを高効率で可視光に変える種類のこの放
電光源が、極めて僅かなエネルギーしか消費しな
い利点がある。従つてこの放電灯の使用は、エネ
ルギー節約に寄与することができる。 The low-pressure sodium vapor discharge lamp according to the invention has the advantage that this discharge light source of the type that converts electrical energy into visible light with high efficiency consumes very little energy. The use of this discharge lamp can therefore contribute to energy savings.
エネルギー節約効率Ｅは次式
Ｅ＝ルーメン／ワツト×１／ワツト
で表わされる。第３図の放電灯について計算する
と、ルーメンは1900、ワツトは18である為、Ｅ＝
5.8となる。同様の計算を1974年７月発行の
Lighting Design and Application第15〜21頁記
載の従来の放電灯について行なうと、
35ワツトのランプについて Ｅ＝3.8
55ワツトのランプについて Ｅ＝2.6
90ワツトのランプについて Ｅ＝1.6
135ワツトのランプについて Ｅ＝1.2
180ワツトのランプについて Ｅ＝1.0
となり、明らかに本発明の放電灯の方がエネルギ
ー節約効率Ｅが顕著格段に優れている。 The energy saving efficiency E is expressed by the following formula: E=Lumen/Watt×1/Watt. Calculating for the discharge lamp in Figure 3, the lumen is 1900 and the wattage is 18, so E=
It becomes 5.8. Similar calculations were made in the July 1974 publication.
For the conventional discharge lamps described in Lighting Design and Application pages 15-21: For a 35 watt lamp E = 3.8 For a 55 watt lamp E = 2.6 For a 90 watt lamp E = 1.6 For a 135 watt lamp E = 1.2 For a 180 watt lamp, E=1.0, and it is clear that the energy saving efficiency E of the discharge lamp of the present invention is significantly superior.
本発明は放電灯の寸法を減少する場合その冷却
面が減少し、従つて放電管の所要温度条件を少い
電力で実現できることを認識したことに基づく。 The invention is based on the recognition that when reducing the dimensions of a discharge lamp, its cooling surface is reduced and thus the required temperature conditions of the discharge vessel can be achieved with less power.
ここで注意すべきは、高効率を維持しながら低
圧ナトリウム蒸気放電灯の所要電力を減少するこ
とが示唆されていたことである。然しこのような
示唆は、放電管と外方バルブとの間の断熱を保護
ガラスの設置により増大するもので、放電灯が極
めて複雑になる欠点があつた。 It should be noted here that it has been suggested that the power requirements of low pressure sodium vapor discharge lamps be reduced while maintaining high efficiency. However, such suggestions, which increase the insulation between the discharge tube and the outer bulb by installing a protective glass, had the disadvantage of making the discharge lamp extremely complex.
本発明の低圧ナトリウム蒸気放電灯の好適な一
実施例においては、放電管はＵ字状である。 In a preferred embodiment of the low-pressure sodium vapor discharge lamp of the invention, the discharge vessel is U-shaped.
この実施例は、放電灯自体が複雑にならずに構
造をさらに一だんと小型にし得る利点がある。 This embodiment has the advantage that the discharge lamp itself does not become complicated and the structure can be made even more compact.
本発明放電灯の他の好適な実施例においては、
外方バルブ及び赤外線反射器が略々円形円筒状で
あり、赤外線反射器の可視光透過性部分が酸化イ
ンジウム被膜から成り、赤外線反射器の残余部分
が略々半分の円形円筒であつて放電管から出て来
る可視光を反射し従つてこの可視光部分を輻射し
て放電管に戻す。 In another preferred embodiment of the discharge lamp of the present invention,
The outer bulb and the infrared reflector have a substantially circular cylindrical shape, the visible light transmitting part of the infrared reflector is made of an indium oxide coating, and the remaining part of the infrared reflector is a substantially half circular cylinder, and the discharge tube is It reflects the visible light coming out of the tube and radiates this visible light portion back to the discharge tube.
この実施例は、放電灯により輻射された光の所
定の指向性（ビーミング）が得られるのみなら
ず、可視光の一部分（輻射により放電管に戻つ
た）も放電管温度の維持に寄与する利点がある。
それ故放電灯を極端に小さい寸法とする必要はな
い。 This embodiment has the advantage that not only can a predetermined directivity (beaming) of the light radiated by the discharge lamp be obtained, but also a portion of the visible light (returned to the discharge tube by radiation) also contributes to maintaining the temperature of the discharge tube. There is.
There is therefore no need for extremely small dimensions of the discharge lamp.
ここで注意すべきことは、略々半円形円筒状の
内方の可視光反射器を具える低圧ナトリウム蒸気
放電灯自体は、例えばオーストリア国特許第
205601号明細書により知られていることである。
然しこの場合には、放電灯は放電管内で生成した
可視光を透過する赤外線反射層を有しない。 It should be noted here that the low-pressure sodium vapor discharge lamp itself, which has a roughly semicircular cylindrical inner visible light reflector, is
This is known from specification No. 205601.
However, in this case, the discharge lamp does not have an infrared reflective layer that transmits visible light generated within the discharge tube.
この実施例においては、放電灯は長さが約27
cm、外方バルブの直径が約５cmである。 In this example, the discharge lamp has a length of approximately 27
cm, the diameter of the outer bulb is approximately 5 cm.
本発明放電灯においては、赤外線及び可視光の
双方を反射する反射器の部分を、反射器の反射性
表面の半分以下とすることができる。 In the discharge lamp of the present invention, the portion of the reflector that reflects both infrared and visible light can be less than half of the reflective surface of the reflector.
本発明放電灯のさらに他の実施例においては、
外方バルブ及び赤外線反射器は略々円形円筒状で
あり、赤外線反射器の略々すべてが可視光透過性
の酸化インジウム被膜から成り、放電灯の長さが
約20cmであり、外方バルブの直径が約５cmであ
る。 In still another embodiment of the discharge lamp of the present invention,
The outer bulb and the infrared reflector are approximately circular and cylindrical, the infrared reflector is almost entirely made of an indium oxide coating that is transparent to visible light, the length of the discharge lamp is approximately 20 cm, and the length of the outer bulb is approximately 20 cm. The diameter is approximately 5 cm.
この実施例はエネルギーの節約に寄与する以外
に、放電灯の寸法が小さいため放電灯の製造に必
要な材料の量が少い利点がある。 In addition to contributing to energy savings, this embodiment has the advantage that, due to the small dimensions of the discharge lamp, the amount of material required to manufacture the discharge lamp is small.
本発明放電灯は例えば安全照明用光源、例えば
車庫の外側又は工場敷地等の光源として特に好適
である。 The discharge lamp of the present invention is particularly suitable as a light source for safety illumination, for example, outside a garage or on a factory site.
本発明を次に図面につきさらに詳細に説明す
る。 The invention will now be explained in more detail with reference to the drawings.
第１図において、放電管１はＵ字状に屈曲して
いて、外方バルブ２により囲まれている。外方バ
ルブ２は円形円筒状である。放電灯基部３は接続
部材を有し、放電灯を電気的に接続する。外方バ
ルブ２の内壁は、内周面の略々半分に亘つて金属
製反射器４を具える（第２図も参照）。反射器４
はナトリウム光と赤外線の双方を反射する。この
場合反射器はアルミニウム製である。外方バルブ
２の内壁の残り半分は、ナトリウム光を透過する
が赤外線を反射する酸化インジウム被膜５を具え
る。被膜５は第１〜２図に点線で示してあり、厚
さは約0.5μである。基部３とは反対側の外方バ
ルブ２の端部には、半球状端部６を配置する。Ｕ
字状放電管の各端部には、それぞれ電極７をを配
置する。両電極は実質的に同じ構造である。放電
管１は支持部材８，９により外方バルブ２に対し
支持する。或る実施例においては放電灯の長さは
約27cmである。外方バルブの直径は約５cmであ
る。放電管の各脚部の直径は約1.5cmである。放
電管は過剰のナトリウム以外に希ガス即ちネオン
をも含有し、これには１％のアルゴンを添加す
る。希ガスの圧力は約8.5mmＨｇである。後述す
る第４図の回路においては、この放電灯は約22ワ
ツトの電力を消費する。この電力で放電灯は約
2400ルーメンの光束を供する。 In FIG. 1, the discharge tube 1 is bent in a U-shape and is surrounded by an outer bulb 2. In FIG. The outer bulb 2 has a circular cylindrical shape. The discharge lamp base 3 has a connecting member and electrically connects the discharge lamp. The inner wall of the outer bulb 2 is provided with a metal reflector 4 over approximately half of its inner circumferential surface (see also FIG. 2). reflector 4
reflects both sodium light and infrared light. In this case the reflector is made of aluminum. The other half of the inner wall of the outer bulb 2 comprises an indium oxide coating 5 which is transparent to sodium light but reflective to infrared radiation. The coating 5 is shown in dotted lines in Figures 1-2 and has a thickness of approximately 0.5 microns. At the end of the outer bulb 2 opposite the base 3 a hemispherical end 6 is arranged. U
An electrode 7 is arranged at each end of the character-shaped discharge tube. Both electrodes are of substantially the same construction. The discharge tube 1 is supported relative to the outer bulb 2 by support members 8, 9. In some embodiments, the length of the discharge lamp is approximately 27 cm. The diameter of the outer bulb is approximately 5 cm. The diameter of each leg of the discharge tube is approximately 1.5 cm. Besides excess sodium, the discharge vessel also contains a rare gas, ie neon, to which 1% of argon is added. The pressure of the noble gas is approximately 8.5 mmHg. In the circuit of FIG. 4, described below, this discharge lamp consumes approximately 22 watts of power. With this power, the discharge lamp is approximately
Provides a luminous flux of 2400 lumens.
第３図においては、Ｕ字状放電管２０を円形円
筒状の外方バルブ２１内に配置する。放電灯は基
部２３を具える。第１図と同様に、基部２３とは
反対側の外方バルブ２１の端部には、半球状カバ
ー２４を設ける。放電管２０の各端部には電極２
５，２６を設ける。両電極は基部２３の部材を成
す電流供給部材に接続する。放電管２０の屈曲部
は金属部材２７により外方バルブ２１に対し支持
する。外方バルブ２１の内壁は、ナトリウム光を
透過するが赤外線を反射する酸化インジウム被膜
２８を具える。被膜２８の厚さは約0.5μであ
る。第３図の放電灯の長さは約20cmである。外方
バルブの直径は約５cmである。放電管の各脚部の
直径は約1.5cmである。放電管は過剰のナトリウ
ム以外に希ガス即ちネオンをも含有し、これには
１％のアルゴンを添加する。希ガスの圧力は約
8.5mmＨｇである。後述する第４図の回路におい
ては、第３図の放電灯は約18ワツトの電力を消費
する。光束は約1900ルーメンである。 In FIG. 3, a U-shaped discharge tube 20 is placed within a circular cylindrical outer bulb 21. In FIG. The discharge lamp comprises a base 23. As in FIG. 1, the end of the outer bulb 21 opposite the base 23 is provided with a hemispherical cover 24. An electrode 2 is provided at each end of the discharge tube 20.
5, 26 are provided. Both electrodes are connected to a current supply member forming part of the base 23. The bent portion of the discharge tube 20 is supported with respect to the outer bulb 21 by a metal member 27. The inner wall of the outer bulb 21 includes an indium oxide coating 28 that transmits sodium light but reflects infrared radiation. The thickness of coating 28 is approximately 0.5μ. The length of the discharge lamp in Figure 3 is approximately 20 cm. The diameter of the outer bulb is approximately 5 cm. The diameter of each leg of the discharge tube is approximately 1.5 cm. Besides excess sodium, the discharge vessel also contains a rare gas, ie neon, to which 1% of argon is added. The pressure of noble gas is approx.
It is 8.5mmHg. In the circuit of FIG. 4, described below, the discharge lamp of FIG. 3 consumes approximately 18 watts of power. The luminous flux is approximately 1900 lumens.
以上に記した放電灯の放電管は、必要ならば、
若干の膨張部を設けてナトリウムが確実に均一に
分散するようにすることができる。 The discharge tube of the discharge lamp described above can be used if necessary.
A slight expansion can be provided to ensure even distribution of the sodium.
第４図において、入力端子４０，４１は約
220V、50Hzの交流電圧源に接続する。端子４０
は誘導安定抵抗４２に接続する。安定抵抗４２の
他端は点灯管４３に接続する。この点灯管４３の
他方側は入力端子４１に接続する。点灯管４３は
本発明放電灯４４により分路される。第４図では
放電灯４４は線図的に示してある。放電灯４４は
第１図又は第３図に示すものを用いることができ
る。前述した諸実施例においては、安定抵抗４２
の自己誘導は約2Hである。 In Fig. 4, the input terminals 40 and 41 are approximately
Connect to a 220V, 50Hz AC voltage source. terminal 40
is connected to the inductive stabilizing resistor 42. The other end of the stabilizing resistor 42 is connected to the lighting tube 43. The other side of the lighting tube 43 is connected to the input terminal 41. The lighting tube 43 is shunted by the discharge lamp 44 of the present invention. In FIG. 4, a discharge lamp 44 is shown diagrammatically. The discharge lamp 44 shown in FIG. 1 or 3 can be used. In the embodiments described above, the ballast resistor 42
The self-induction of is about 2H.
入力端子４０，４１を前述の供給源に接続する
と、電流はまず安定抵抗４２から点灯管４３に流
れる。次いで、点灯管に既知の様式で、生成した
グロー放電により点灯管４３内のバイメタル接点
が加熱される。この加熱により点灯管４３の接点
は互い方向に曲り、互いに接触する結果、グロー
放電が消滅する。接点が冷却してその結果互いに
分離すると、誘導安定抵抗４２中に過度電流変化
が生成し、このため点灯管４３の両端間に高い電
圧ピークが発生し、放電灯４４の両端間にも高い
電圧ピークが発生する。このため放電灯４４が点
灯する。放電灯が第１図で点灯しなければ、前述
の手順が自動的に繰返される。点灯管４３の始動
電圧は、放電灯４４の作動電圧より高いように選
定する。このことは放電灯４４が作動状態にある
場合には、点灯管４３が作動しないことを示す。 When the input terminals 40, 41 are connected to the aforementioned supply source, current first flows from the ballast resistor 42 to the lighting tube 43. The generated glow discharge then heats the bimetallic contacts in the lighting tube 43 in a manner known for lighting tubes. Due to this heating, the contacts of the lighting tube 43 bend toward each other and come into contact with each other, thereby extinguishing the glow discharge. When the contacts cool and as a result separate from each other, transient current changes are generated in the inductive ballast resistor 42, which causes high voltage peaks across the lighting tube 43 and also high voltage peaks across the discharge lamp 44. Voltage peaks occur. Therefore, the discharge lamp 44 is turned on. If the discharge lamp does not light up in FIG. 1, the foregoing procedure is automatically repeated. The starting voltage of the lighting tube 43 is selected to be higher than the operating voltage of the discharge lamp 44. This indicates that when the discharge lamp 44 is in the operating state, the lighting tube 43 is not operating.
第１図の場合、作動状態の放電灯の電流強度は
約300mAであり、アーク電圧は約95Vである。 In the case of FIG. 1, the current intensity of the discharge lamp in the operating state is about 300 mA, and the arc voltage is about 95V.
第３図の場合、電流強度は約350mAであり、
アーク電圧は約60Vである。放電管の最低温点
は、一般に、液体ナトリウムを充填した密封点近
辺にあり、第１図及び第３図の放電灯の場合、そ
の温度は約255℃である。 In the case of Figure 3, the current intensity is approximately 350mA,
The arc voltage is about 60V. The lowest temperature point of the discharge tube is generally near the sealing point of the liquid sodium filling, which in the case of the discharge lamps of FIGS. 1 and 3 is about 255.degree.
第４図に示す回路に代る回路を、放電灯の点灯
と電力供給に用いることができる。酸化インジウ
ム層例えば第３図の放電灯の層２８を主電極２
５，２６の一つと電気的に接続することにより、
放電灯の点灯電圧は低減される。 An alternative circuit to the circuit shown in FIG. 4 can be used for lighting and powering the discharge lamp. The indium oxide layer, for example the layer 28 of the discharge lamp in FIG. 3, is used as the main electrode 2.
By electrically connecting with one of 5 and 26,
The lighting voltage of the discharge lamp is reduced.
本発明放電灯は寸法が小さいことの他に、電流
強度が比較的小さいため電極損失も比較的少ない
利点がある。上述の諸実施例の場合、電極損失は
約７ワツトと約８ワツトである。 In addition to its small size, the discharge lamp of the present invention has the advantage of relatively low current intensity and relatively low electrode loss. For the embodiments described above, the electrode losses are about 7 watts and about 8 watts.
本発明放電灯は、比較的少い電力で比較的高い
光効率が得られる大きな利点がある。上述の諸実
施例の場合、約20ワツトで100ルーメン／ワツト
以上である。 The discharge lamp of the present invention has the great advantage that relatively high light efficiency can be obtained with relatively little electric power. In the embodiments described above, this is over 100 lumens/watt at about 20 watts.
本発明の広汎な精神と視野を逸脱することな
く、本発明の種々な変更と修整をなし得ること勿
論である。 It will be understood that various changes and modifications may be made to the invention without departing from its broader spirit and scope.
第１図は本発明放電灯の部分的断面図、第２図
はその―線上の断面図、第３図は本発明放電
灯の他の例を示す部分的断面図、第４図は第１図
又は第３図の放電灯の作動用の線図的電気回路図
である。
１……放電管、２……外方バルブ、３……基
部、４……反射器、５……酸化インシウム被膜、
６……外方バルブ２の半円形端部、７……電極、
８，９……放電管１の支持部材、２０……Ｕ字状
放電管、２１……外方バルブ、２３……基部、２
４……外方バルブ２１の半円形状カバー、２５，
２６……電極、２７……放電管２０の屈曲部の支
持部材、２８……酸化インジウム被膜、４０，４
１……入力端子、４２……誘導安定抵抗、４３…
…点灯管、４４……放電灯。
Fig. 1 is a partial sectional view of the discharge lamp of the present invention, Fig. 2 is a sectional view along the line - Fig. 3 is a partial sectional view showing another example of the discharge lamp of the invention, and Fig. 4 is a diagrammatic electrical circuit diagram for the operation of the discharge lamp of FIG. 3; FIG. DESCRIPTION OF SYMBOLS 1...Discharge tube, 2...Outer bulb, 3...Base, 4...Reflector, 5...Insium oxide coating,
6... Semicircular end of the outer bulb 2, 7... Electrode,
8, 9...Supporting member for discharge tube 1, 20...U-shaped discharge tube, 21...Outer bulb, 23...Base, 2
4...Semicircular cover of the outer valve 21, 25,
26... Electrode, 27... Support member for the bent portion of the discharge tube 20, 28... Indium oxide coating, 40, 4
1...Input terminal, 42...Inductive stabilizing resistor, 43...
...Lighting tube, 44...Discharge lamp.
Claims (1)
ブとを具え、放電灯の断熱を放電管を囲む内方の
円形円筒状の赤外線反射器により主として行な
い、この赤外線反射器はその表面積の少くとも半
分以上に亘つて放電管内の生成可視光を透過性で
あり、ナトリウムが過剰に存在し、放電灯の周囲
温度が約20℃であるときには放電灯の作動状態下
の放電管の最低温点の温度が245〜265℃である低
圧ナトリウム蒸気放電灯において、放電灯の長さ
即ち外方バルブの全長が18〜27cmであり、放電灯
の管径が約５cmであり、前記温度範囲内の放電管
の最低温点の温度が放電灯への25ワツト以下約18
ワツト以上の電力供給で達成されるのに充分であ
るように放電灯の長さ以外の寸法が小さいことを
特徴とする低圧ナトリウム蒸気放電灯。 ２ 赤外線反射器が、酸化インジウム被膜から成
る略々半円筒状の可視光透過性部分と、放電管か
ら出て来る可視光の一部分を反射して放電管に戻
しかくて放射光を指向させるアルミニウムから成
る略々半円筒状の部分とを有し、外方バルブの全
長が約27cmであり、放電灯のワツト数が約22Wで
ある特許請求の範囲第１項記載の低圧ナトリウム
蒸気放電灯。 ３ 外方バルブと赤外線反射器が略々円形円筒状
であり、赤外線反射器の略々すべてが可視光透過
性の酸化インジウム被膜から成り、外方バルブの
全長が約20cmであり、放電灯のワツト数が約18W
である特許請求の範囲第１項記載の低圧ナトリウ
ム蒸気放電灯。[Claims] 1. A lamp comprising a U-shaped discharge tube and an outer bulb surrounding the discharge tube, the discharge lamp being thermally insulated mainly by an inner circular cylindrical infrared reflector surrounding the discharge tube; The infrared reflector is transparent to the visible light produced in the discharge lamp over at least half of its surface area, and is transparent to the operating state of the discharge lamp when sodium is present in excess and the ambient temperature of the discharge lamp is approximately 20°C. In a low-pressure sodium vapor discharge lamp where the lowest temperature point of the lower discharge tube is 245-265℃, the length of the discharge lamp, that is, the total length of the outer bulb, is 18-27cm, and the tube diameter of the discharge lamp is approximately 5cm. and the temperature of the lowest temperature point of the discharge tube within the above temperature range is approximately 18
A low-pressure sodium vapor discharge lamp characterized in that the dimensions other than the length of the discharge lamp are so small that a power supply of more than watts is sufficient to be achieved. 2. The infrared reflector consists of a roughly semi-cylindrical visible light transmitting part made of an indium oxide film and an aluminum part that reflects a part of the visible light coming out of the discharge tube and directs the synchrotron radiation back to the discharge tube. 2. A low-pressure sodium vapor discharge lamp according to claim 1, wherein the lamp has a generally semi-cylindrical portion, the total length of the outer bulb is approximately 27 cm, and the wattage of the discharge lamp is approximately 22W. 3. The outer bulb and the infrared reflector are approximately circular and cylindrical, the infrared reflector is almost entirely made of an indium oxide coating that transmits visible light, the total length of the outer bulb is approximately 20 cm, and the length of the outer bulb is approximately 20 cm. The wattage is approximately 18W
A low-pressure sodium vapor discharge lamp according to claim 1.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7611993,A NL180464C (en) | 1976-10-29 | 1976-10-29 | LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5356878A JPS5356878A (en) | 1978-05-23 |
| JPS6127858B2 true JPS6127858B2 (en) | 1986-06-27 |
Family
ID=19827133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12765877A Granted JPS5356878A (en) | 1976-10-29 | 1977-10-26 | Low pressure sodium vapor discharge lamp |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5356878A (en) |
| AR (1) | AR215653A1 (en) |
| AT (1) | AT362839B (en) |
| BE (1) | BE860193A (en) |
| BR (1) | BR7707187A (en) |
| CA (1) | CA1094628A (en) |
| DE (1) | DE2746413C2 (en) |
| ES (1) | ES463619A1 (en) |
| FR (1) | FR2369678A1 (en) |
| GB (1) | GB1558016A (en) |
| HU (1) | HU179567B (en) |
| IN (1) | IN148893B (en) |
| IT (1) | IT1088601B (en) |
| NL (1) | NL180464C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7811350A (en) * | 1978-11-17 | 1980-05-20 | Philips Nv | LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP. |
| NL185481C (en) * | 1979-11-14 | 1990-04-17 | Philips Nv | LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP. |
| NL8205026A (en) * | 1982-12-29 | 1984-07-16 | Philips Nv | APPARATUS EQUIPPED WITH A METAL VAPOR DISCHARGE PIPE EQUIPPED WITH AT LEAST TWO INTERNAL ELECTRODES. |
| US5036243A (en) * | 1989-12-18 | 1991-07-30 | Cocks Franklin H | Glass plate illumination device sign with integral electrodes of particular thermal resistance |
| JP4274053B2 (en) * | 2004-06-07 | 2009-06-03 | ウシオ電機株式会社 | Light source device |
| CN102097277B (en) * | 2010-11-23 | 2016-04-06 | 浙江华氏照明科技有限公司 | A kind of quartz metal halide lamp |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT205601B (en) * | 1957-07-18 | 1959-10-10 | Philips Nv | U-shaped sodium vapor discharge tube |
| FR1199913A (en) * | 1957-07-18 | 1959-12-17 | Philips Nv | Sodium vapor discharge tube in the shape of a u |
| NL166818C (en) * | 1974-11-14 | 1981-09-15 | Philips Nv | LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP. |
-
1976
- 1976-10-29 NL NLAANVRAGE7611993,A patent/NL180464C/en not_active IP Right Cessation
-
1977
- 1977-10-01 IN IN1468/CAL/77A patent/IN148893B/en unknown
- 1977-10-15 DE DE2746413A patent/DE2746413C2/en not_active Expired
- 1977-10-20 CA CA289,195A patent/CA1094628A/en not_active Expired
- 1977-10-25 HU HU77PI598A patent/HU179567B/en not_active IP Right Cessation
- 1977-10-25 AR AR269702A patent/AR215653A1/en active
- 1977-10-26 JP JP12765877A patent/JPS5356878A/en active Granted
- 1977-10-26 IT IT29010/77A patent/IT1088601B/en active
- 1977-10-26 BR BR7707187A patent/BR7707187A/en unknown
- 1977-10-26 GB GB44547/77A patent/GB1558016A/en not_active Expired
- 1977-10-27 ES ES463619A patent/ES463619A1/en not_active Expired
- 1977-10-27 BE BE182132A patent/BE860193A/en not_active IP Right Cessation
- 1977-10-27 AT AT0766277A patent/AT362839B/en not_active IP Right Cessation
- 1977-10-28 FR FR7732550A patent/FR2369678A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2369678B1 (en) | 1982-04-23 |
| AT362839B (en) | 1981-06-25 |
| ATA766277A (en) | 1980-11-15 |
| NL180464C (en) | 1987-02-16 |
| HU179567B (en) | 1982-11-29 |
| DE2746413A1 (en) | 1978-05-03 |
| BE860193A (en) | 1978-04-27 |
| CA1094628A (en) | 1981-01-27 |
| BR7707187A (en) | 1978-07-18 |
| DE2746413C2 (en) | 1982-11-04 |
| JPS5356878A (en) | 1978-05-23 |
| NL180464B (en) | 1986-09-16 |
| IN148893B (en) | 1981-07-11 |
| GB1558016A (en) | 1979-12-19 |
| IT1088601B (en) | 1985-06-10 |
| ES463619A1 (en) | 1978-07-16 |
| NL7611993A (en) | 1978-05-03 |
| AR215653A1 (en) | 1979-10-31 |
| FR2369678A1 (en) | 1978-05-26 |
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