JPH0580787B2 - - Google Patents
Info
- Publication number
- JPH0580787B2 JPH0580787B2 JP63032278A JP3227888A JPH0580787B2 JP H0580787 B2 JPH0580787 B2 JP H0580787B2 JP 63032278 A JP63032278 A JP 63032278A JP 3227888 A JP3227888 A JP 3227888A JP H0580787 B2 JPH0580787 B2 JP H0580787B2
- Authority
- JP
- Japan
- Prior art keywords
- incandescent filament
- filament cathode
- phosphor
- light
- envelope
- 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 - Lifetime
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 26
- 230000005855 radiation Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229910052984 zinc sulfide Inorganic materials 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、光色を変化させる可変光色光源に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a variable color light source that changes the color of light.
［従来の技術］
従来、電子線励起による蛍光体発光を利用した
光源として、特公昭32−6545号公報や、特開昭50
−130277号公報等で示されるように、比較的高効
率でコンパクトな光源が提案されている。これら
の光源は、電球状で、コンパクト、高効率、長寿
命の可能性があるが、その光色は、組成や被着し
た蛍光体の種類で一義的に限定されてしまうもの
である。[Prior art] Conventionally, as a light source using phosphor emission by electron beam excitation, there has been proposed a light source as disclosed in Japanese Patent Publication No. 32-6545 and Japanese Unexamined Patent Application Publication No. 1973
As shown in Japanese Patent No. 130277 and the like, relatively highly efficient and compact light sources have been proposed. These light sources are bulb-shaped, compact, highly efficient, and potentially long-lasting, but their light color is uniquely limited by their composition and the type of phosphor deposited on them.
近年、より豊かな照明環境への希求の中で自由
に色温度を変えたい、あるいは、自由に光色を変
化したいという要望がある。従来、上記光源を用
いてこれを満たそうとするには、二種あるいは数
種の元々光色の異なる光源を別途用意し、これら
を相互に調光制御して色温度ないしは光色を可変
するしかなく、混色性が不十分になると共に、全
体として大きな形状になつてしまい、又制御も複
雑化するという問題があつた。 In recent years, with the desire for richer lighting environments, there has been a desire to freely change the color temperature or light color. Conventionally, in order to meet this requirement using the above-mentioned light sources, two or several types of light sources with originally different light colors were separately prepared, and the color temperature or light color was varied by mutual dimming control of these light sources. However, there were problems in that the color mixing properties were insufficient, the overall shape became large, and the control became complicated.
［発明が解決しようとする課題］
本発明は、上述の点に鑑みて提供したものであ
つて、１つの光源で色温度を自由に可変できるこ
とを目的とした可変光色光源を提供するものであ
る。[Problems to be Solved by the Invention] The present invention has been provided in view of the above-mentioned points, and provides a variable light color light source whose purpose is to freely vary the color temperature with one light source. be.
［課題を解決するための手段］
［作用］
本発明は、内部が真空気密で内面に蛍光体を被
着した透光性外囲器と、この外囲器内に設けた熱
電子放出性の白熱フイラメント陰極と、外囲器の
内面に形成した陽極と、上記白熱フイラメント陰
極と陽極との間に高電圧を印加して蛍光体を電子
励起可視発光させると共に、白熱フイラメント陰
極より加熱による可視熱放射発光させる制御手段
とを具備することにより、白熱フイラメント陰極
の発光色と蛍光体の発光色とを混合して発光させ
るようにしたものである。[Means for Solving the Problems] [Operation] The present invention comprises a light-transmitting envelope whose interior is vacuum-tight and whose inner surface is coated with a phosphor, and a thermionic-emitting device provided inside the envelope. A high voltage is applied between the incandescent filament cathode, the anode formed on the inner surface of the envelope, and the incandescent filament cathode and anode to electronically excite the phosphor to emit visible light, and at the same time emit visible heat by heating from the incandescent filament cathode. By including a control means for emitting radiant light, the emitted light color of the incandescent filament cathode and the emitted light color of the phosphor are mixed and emitted.
また、内部が真空気密で内面に蛍光体を被着し
た透光性外囲器と、この外囲器内に設けた熱電子
放出性の白熱フイラメント陰極と、外囲器の内面
に形成した陽極と、陽極と白熱フイラメント陰極
間電圧、又は白熱フイラメント陰極への印加電圧
或いはその双方を制御して最終白光色の色温度を
可変させる制御手段とを具備することにより、白
熱フイラメント陰極や蛍光体の発光色を可変し
て、これらで混合される発光色を自由に可変でき
るようにしたものである。 In addition, there is a translucent envelope with a vacuum-tight interior and a phosphor coated on the inner surface, a thermion-emitting incandescent filament cathode installed inside the envelope, and an anode formed on the inner surface of the envelope. and a control means for varying the color temperature of the final white light by controlling the voltage between the anode and the incandescent filament cathode, or the voltage applied to the incandescent filament cathode, or both. By changing the emitted light color, the mixed emitted light color can be freely changed.
［実施例］
以下、本発明の実施例を図面を参照して説明す
る。第１図は本発明の構成図を示し、第２図は第
１図中のＸ部分の拡大断面図を示している。本実
施例の光源は電球状に形成されており、陽極は、
外囲器たるガラス管５の内面に被覆した透明導電
膜６により形成されている。この透明導電膜６の
内面に被着されている蛍光体７は電子線励起によ
り青色性の発光を示す通常のZnS：Ag（銀添加硫
化亜鉛）、またはZnS：Ag、Cl蛍光体である。
尚、ガラス管５の内部は真空で気密化されてい
る。白熱フイラメント陰極４は、タングステン又
は3000〓の高熱に耐え、且つ電子放出係数の高い
適当なメタルのフイラメントである。[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration diagram of the present invention, and FIG. 2 shows an enlarged sectional view of the X portion in FIG. The light source in this example is shaped like a light bulb, and the anode is
It is formed by a transparent conductive film 6 coated on the inner surface of a glass tube 5 serving as an envelope. The phosphor 7 deposited on the inner surface of the transparent conductive film 6 is a normal ZnS:Ag (silver-doped zinc sulfide) or ZnS:Ag,Cl phosphor that emits blue light when excited by an electron beam.
Incidentally, the inside of the glass tube 5 is sealed in a vacuum. The incandescent filament cathode 4 is a filament of tungsten or a suitable metal that can withstand high heat of 3000°C and has a high electron emission coefficient.
かかる構成において、陽極である透明導電膜６
と内部接続されているリード線１と、白熱フイラ
メント陰極４の一端と接続したリード線２との間
に、リード線１が正極となるように数100V以上
の比較的高DC電圧V1を印加し、且つリード線２
と白熱フイラメント陰極４の他端と接続している
リード線３との間に、白熱フイラメント陰極４が
白熱加熱するように極性任意にDC電圧又はAC電
圧V2を印加すると、白熱フイラメント陰極４よ
り熱電子が放射、加速され、蛍光体７を励起して
青色発光せしめ、電子は透明導電膜６を介して電
源へ回収されていく。一方、白熱フイラメント陰
極４は白熱色発光をし、結果としてガラス管５の
外に出てくる光は両者が混合した白色性の発光を
する。これを第３図にて説明する。尚、上記電圧
V1，V2が光色発光させる制御手段を構成する。 In such a configuration, the transparent conductive film 6 serving as the anode
A relatively high DC voltage V 1 of several hundred V or more is applied between the lead wire 1 which is internally connected to the incandescent filament cathode 4 and the lead wire 2 which is connected to one end of the incandescent filament cathode 4 so that the lead wire 1 becomes the positive electrode. and lead wire 2
When a DC voltage or an AC voltage V 2 of arbitrary polarity is applied between the incandescent filament cathode 4 and the lead wire 3 connected to the other end of the incandescent filament cathode 4 so that the incandescent filament cathode 4 becomes incandescently heated, the incandescent filament cathode 4 Thermionic electrons are emitted and accelerated, excite the phosphor 7 to emit blue light, and the electrons are recovered to the power source via the transparent conductive film 6. On the other hand, the incandescent filament cathode 4 emits incandescent color, and as a result, the light coming out of the glass tube 5 emits white light that is a mixture of both. This will be explained with reference to FIG. In addition, the above voltage
V 1 and V 2 constitute a control means for emitting light color.
第３図はxy色度図で、中央のカーブBBLが所
謂黒体軌跡で、これを囲む斜線で示した近辺領域
が白色を示す。左へ行く程高色温度（青白色）
で、右へ行く程低色温度（赤白色）を呈す。今、
蛍光体７よりの発光は、青色の点Ａ辺りの発光を
示し、白熱フイラメント陰極４は点Ｂ辺りの電球
色的発光（赤熱色域）を示すため、両者の混合に
より略直線Ａ−Ｂを結ぶ範囲の白色発光を最終的
に得る。ここで、電圧V1，V2を適当に変化させ
ると、夫々の元発光の強さも変化するため、Ａ−
Ｂ間の任意の光色が可能となる。一方の電圧を固
定し、他方のみ変化しても同様にある程度可変さ
せることができる。また、蛍光体７を任意の光色
を持つ蛍光体を被着して、光色を変化させるよう
にしても良い。 FIG. 3 is an xy chromaticity diagram, in which the central curve BBL is the so-called blackbody locus, and the surrounding area indicated by diagonal lines indicates white. The further left you go, the higher the color temperature (blue-white)
The further you go to the right, the lower the color temperature (reddish white) becomes. now,
The light emitted from the phosphor 7 emits blue light around point A, and the incandescent filament cathode 4 shows light bulb color light around point B (red hot color range), so by mixing the two, a substantially straight line A-B is formed. Finally, we obtain white light emission within the range that connects. Here, if the voltages V 1 and V 2 are changed appropriately, the intensity of each original light emission will also change, so A-
Any light color between B is possible. Even if one voltage is fixed and only the other voltage is changed, it can be similarly varied to some extent. Further, the phosphor 7 may be coated with a phosphor having an arbitrary light color to change the light color.
白熱フイラメント陰極４を2500〓位に白熱さ
せ、その光強度を蛍光体７からの青色発光強度と
略同じ強さとせしめると、略5000〓辺りの白色を
得ることができる。尚、タングステンを適当な熱
温度にすると、その熱電子放射能力は、次式で示
すリチヤードソンの式で得られる。 If the incandescent filament cathode 4 is heated to about 2,500 degrees of incandescence and its light intensity is made to be approximately the same as the intensity of the blue light emitted from the phosphor 7, a white color of approximately 5,000 degrees can be obtained. Incidentally, when tungsten is heated to an appropriate thermal temperature, its thermionic emission ability is obtained by the Richardson equation shown in the following equation.
Ｊ＝AT2exp（−eV／kT）
ここで、Ａは熱電子放出定数、eVは仕事関数、
ｋはボルツマン定数（＝1.38×10-23W・sec／〓）
であり、ＡとeVは物質により決まる。 J=AT 2 exp (-eV/kT) where A is the thermionic emission constant, eV is the work function,
k is Boltzmann constant (=1.38×10 -23 W・sec/〓)
, and A and eV are determined by the substance.
タングステンのＡ70A／cm2・°K2、eV
4.5eVであり、2800〓位の温度では、Ｊ1A／cm2
も得られるので、例えば、蛍光体７の発光用に
500V×100ｍＡの電力を印加させると、青色蛍光
体７の変換効率は約51ｍ／Ｗ位であり、凡そ250
ｍの青色光が得られる。一方、タングステンは
その表面積を0.1cm2とすれば、2800〓加熱で約100
ｍＡの電子放出がなされる。フイラメント加熱電
力は、フイラメント径により可変できるが、今、
20W印加されていれば、白熱光放射効率は約10l
ｍ／Ｗとして200ｍの白熱光色光を得る。白熱
フイラメント陰極４が電球状形状の略中央にあれ
ば、ガラス管５の外面上で両者の光は一様に混光
し、一つの光色、約5000〓辺りの通常の白色光を
得ることができる。尚、白熱フイラメント陰極４
よりの電子放出能力を増すため、トリウムを表面
コーテイングしたり、他のメタルを使うことも勿
論可能である。 Tungsten A70A/ cm2・° K2 , eV
4.5eV, and at a temperature of about 2800〓, J1A/cm 2
For example, for the light emission of the phosphor 7,
When a power of 500V x 100mA is applied, the conversion efficiency of the blue phosphor 7 is about 51m/W, which is about 250m/W.
m blue light is obtained. On the other hand, if the surface area of tungsten is 0.1cm 2 , then the surface area of tungsten is 2800〓about 100% when heated.
mA of electrons is emitted. The filament heating power can be varied depending on the filament diameter, but now,
If 20W is applied, the incandescent light radiation efficiency is about 10L
Obtain incandescent colored light of 200 m as m/W. If the incandescent filament cathode 4 is located approximately at the center of the bulb-shaped shape, both lights will be mixed uniformly on the outer surface of the glass tube 5, and one light color, normal white light of about 5000 mm, will be obtained. I can do it. Incidentally, the incandescent filament cathode 4
Of course, it is also possible to coat the surface with thorium or use other metals to increase the electron emission ability.
［発明の効果］
本発明は上述のように、内部が真空気密で内面
に蛍光体を被着した透光性外囲器と、この外囲器
内に設けた熱電子放出性の白熱フイラメント陰極
と、外囲器の内面に形成した陽極と、上記白熱フ
イラメント陰極と陽極との間に高電圧を印加して
蛍光体を電子励起可視発光させると共に、白熱フ
イラメント陰極より加熱による可視熱放射発光さ
せる制御手段とを具備したものであるから、白熱
フイラメント陰極の発光色と蛍光体の発光色とを
混合して発光させることができる効果を奏するも
のである。[Effects of the Invention] As described above, the present invention comprises a light-transmitting envelope whose interior is vacuum-tight and whose inner surface is coated with a phosphor, and a thermionic-emitting incandescent filament cathode provided inside the envelope. A high voltage is applied between the anode formed on the inner surface of the envelope, the incandescent filament cathode, and the anode to cause the phosphor to emit visible light through electronic excitation, and to cause the incandescent filament cathode to emit visible heat radiation by heating. Since it is equipped with a control means, it is possible to emit light by mixing the emitted light color of the incandescent filament cathode and the emitted light color of the phosphor.
また、内部が真空気密で内面に蛍光体を被着し
た透光性外囲器と、この外囲器内に設けた熱電子
放出性の白熱フイラメント陰極と、外囲器の内面
に形成した陽極と、陽極と白熱フイラメント陰極
間電圧、又は白熱フイラメント陰極への印加電圧
或いはその双方を制御して最終白光色の色温度を
可変させる制御手段とを具備したものであるか
ら、該制御手段により白熱フイラメント陰極や蛍
光体の発光色を可変して、これらで混合される発
光色を自由に可変できるものであり、従つて、一
つの光源で色温度、光色を一様均一に変化できる
ものであり、また、制御手段で２つの電源を用い
ているものの、所謂電流制御用の安定器は不要で
あり、点灯系はコンパクトで簡便にできる効果を
奏するものである。 In addition, there is a translucent envelope with a vacuum-tight interior and a phosphor coated on the inner surface, a thermion-emitting incandescent filament cathode installed inside the envelope, and an anode formed on the inner surface of the envelope. and a control means for varying the color temperature of the final white light by controlling the voltage between the anode and the incandescent filament cathode, or the voltage applied to the incandescent filament cathode, or both. By changing the emitted light color of the filament cathode and phosphor, the emitted color mixed by these can be freely varied. Therefore, it is possible to uniformly change the color temperature and light color with one light source. Furthermore, although two power supplies are used in the control means, there is no need for a so-called ballast for current control, and the lighting system has the advantage of being compact and simple.
第１図は本発明の実施例の構成図、第２図は同
上の要部拡大断面図、第３図は同上のxy色度図
である。
４は白熱フイラメント陰極、６は透明導電膜、
７は蛍光体である。
FIG. 1 is a configuration diagram of an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the main part of the same, and FIG. 3 is an xy chromaticity diagram of the same. 4 is an incandescent filament cathode, 6 is a transparent conductive film,
7 is a phosphor.
Claims (1)
光性外囲器と、この外囲器内に設けた熱電子放出
性の白熱フイラメント陰極と、外囲器の内面に形
成した陽極と、上記白熱フイラメント陰極と陽極
との間に高電圧を印加して蛍光体を電子励起可視
発光させると共に、白熱フイラメント陰極より加
熱による可視熱放射発光させる制御手段とを具備
して成る可変光色光源。 ２ 蛍光体は白熱フイラメント陰極よりの熱放射
発光との混合により最終白色発光をする色度特性
を持つ青色発光性の電子線励起型とした請求項１
記載の可変光色光源。 ３ 内部が真空気密で内面に蛍光体を被着した透
光性外囲器と、この外囲器内に設けた熱電子放出
性の白熱フイラメント陰極と、外囲器の内面に形
成した陽極と、陽極と白熱フイラメント陰極間電
圧、又は白熱フイラメント陰極への印加電圧或い
はその双方を制御して最終白光色の色温度を可変
させる制御手段とを具備して成る可変光色光源。 ４ 白熱フイラメント陰極より熱放射発光させる
と共に、任意の光色を持つ蛍光体を被着し、上記
制御手段により光色変化可能とした請求項３記載
の可変光色光源。[Claims] 1. A translucent envelope whose interior is vacuum-tight and whose inner surface is coated with a phosphor; a thermionic-emitting incandescent filament cathode provided within the envelope; An anode formed on the inner surface, and a control means that applies a high voltage between the incandescent filament cathode and the anode to cause the phosphor to emit visible light through electronic excitation, and to cause the incandescent filament cathode to emit visible heat radiation by heating. A variable light color light source consisting of. 2. Claim 1: The phosphor is a blue-emitting electron beam-excited type having a chromaticity characteristic that emits final white light when mixed with thermal radiation emitted from an incandescent filament cathode.
Variable light color light source as described. 3. A translucent envelope with a vacuum-tight interior and a phosphor coated on the inner surface, a thermion-emitting incandescent filament cathode provided inside the envelope, and an anode formed on the inner surface of the envelope. . Control means for controlling the voltage between the anode and the incandescent filament cathode, or the voltage applied to the incandescent filament cathode, or both, to vary the color temperature of the final white light color. 4. A variable light color light source according to claim 3, which emits heat radiation from an incandescent filament cathode and is coated with a phosphor having an arbitrary light color, so that the light color can be changed by the control means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63032278A JPH01206557A (en) | 1988-02-15 | 1988-02-15 | Light source with variable colored light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63032278A JPH01206557A (en) | 1988-02-15 | 1988-02-15 | Light source with variable colored light |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01206557A JPH01206557A (en) | 1989-08-18 |
| JPH0580787B2 true JPH0580787B2 (en) | 1993-11-10 |
Family
ID=12354509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63032278A Granted JPH01206557A (en) | 1988-02-15 | 1988-02-15 | Light source with variable colored light |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01206557A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5182399B2 (en) * | 2011-07-20 | 2013-04-17 | 三菱化学株式会社 | White light emitting device |
| CN113587036A (en) * | 2021-08-12 | 2021-11-02 | 苏州乔远激光科技有限公司 | Transparent piezoelectricity polychrome LD atmosphere lamp module |
-
1988
- 1988-02-15 JP JP63032278A patent/JPH01206557A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01206557A (en) | 1989-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0316739B2 (en) | ||
| JPH0133900B2 (en) | ||
| US2269819A (en) | White light lamp | |
| US2341990A (en) | Electric discharge device | |
| JPH0580787B2 (en) | ||
| US2662196A (en) | Concentrated arc lamp | |
| US2200951A (en) | Artificial illumination | |
| US2065988A (en) | Lamp | |
| US1991510A (en) | Radiating apparatus | |
| JPS60227351A (en) | Electron luminous tube device | |
| JPS60227350A (en) | Electron luminous tube device | |
| JPH0329262A (en) | Electronically excited light emitting tube | |
| JPH0644476B2 (en) | Electron arc tube device | |
| JPH0676801A (en) | Variable color fluorescent lamp device | |
| JPH04101391A (en) | Light emitting element | |
| JPH0371551A (en) | Variable luminescent color lighting device | |
| JPH04115489A (en) | Light emitting element | |
| JPS60130046A (en) | Fluorescent lamp | |
| JPH0676799A (en) | Fluorescent mercury lamp | |
| JPS5842159A (en) | Single base type discharge lamp | |
| Inman et al. | The fluorescent lamp and its application to motion picture studio lighting | |
| JPH04319292A (en) | Light emitter | |
| JPS5842946B2 (en) | fluorescent lamp | |
| JPS60193255A (en) | Small metal vapor electric-discharge lamp and its manufacture | |
| JPH04115488A (en) | Light emitting element |