JP2718986B2 - Lighting device with metal halide lamp - Google Patents
Lighting device with metal halide lampInfo
- Publication number
- JP2718986B2 JP2718986B2 JP1070903A JP7090389A JP2718986B2 JP 2718986 B2 JP2718986 B2 JP 2718986B2 JP 1070903 A JP1070903 A JP 1070903A JP 7090389 A JP7090389 A JP 7090389A JP 2718986 B2 JP2718986 B2 JP 2718986B2
- Authority
- JP
- Japan
- Prior art keywords
- metal halide
- halide lamp
- lighting device
- multilayer interference
- interference film
- 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
Description
【発明の詳細な説明】 産業上の利用分野 本発明はメタルハライドランプを備えた照明装置に関
するものである。Description: TECHNICAL FIELD The present invention relates to a lighting device provided with a metal halide lamp.
従来の技術 メタルハライドランプは、平均演色評価数Raが80以上
と演色性にすぐれ、また効率も801m/Wと高いところか
ら、屋内照明を中心に普及が著しい。2. Description of the Related Art Metal halide lamps have excellent color rendering properties with an average color rendering index Ra of 80 or more, and have a high efficiency of 801 m / W.
しかし、発光管内にタリウム、ナトリウム、ツリウ
ム、ディスプロシウム、ホルミウムを封入したランプで
は、その色温度は3500〜4800Kであり、使用される照明
分野では色温度が高すぎることがあり、この場合は、錫
を主体としたハロゲン化物を封入した色温度3000Kのラ
ンプを使用していた。また、色温度4300Kのランプが使
用されていた照明施設で雰囲気を落ちついたものにする
場合には、色温度3000Kのランプに交換せざるを得ない
といった問題があった。However, for lamps in which thallium, sodium, thulium, dysprosium and holmium are sealed in the arc tube, the color temperature is 3500-4800K, and the color temperature may be too high in the lighting field used, in which case A lamp with a color temperature of 3000 K, in which a halide mainly composed of tin was sealed, was used. In addition, there is a problem that if the atmosphere is calm in a lighting facility where a lamp with a color temperature of 4300K has been used, the lamp must be replaced with a lamp with a color temperature of 3000K.
発明が解決しようとする課題 本発明は、かかる3000K程度の色温度の低い照明装置
を得る場合、ランプを交換することなく、照明器具側で
解決しようとするものである。Problem to be Solved by the Invention The present invention is to solve the problem on the lighting fixture side without replacing the lamp when obtaining such a lighting device having a low color temperature of about 3000K.
課題を解決するための手段 本発明の照明装置は、前面にガラスを有する器具と、
前記器具内に設けられ、発光管内に金属ハロゲン化物を
封入した色温度3500〜4800Kのメタルハライドランプと
を有する照明装置において、前記ガラスの表面に、タリ
ウム皮膜と多層干渉膜との二重層を形成した構成を有し
ている。Means for Solving the Problems The lighting device of the present invention includes an apparatus having glass on the front surface,
In the lighting device having a metal halide lamp having a color temperature of 3500 to 4800 K, which is provided in the fixture and encapsulates a metal halide in an arc tube, a double layer of a thallium film and a multilayer interference film is formed on the surface of the glass. It has a configuration.
作用 本発明によると、ガラス表面に形成された多層干渉膜
により短波長の青色成分が抑制されて照明装置から放射
される光は色温度3000K程度となり、さらに光色がほぼ
黒体軌跡上にあり、白色感のある好ましいものとなる。According to the present invention, the light emitted from the illuminating device with the short-wavelength blue component suppressed by the multilayer interference film formed on the glass surface has a color temperature of about 3000 K, and the light color is substantially on the blackbody locus. , And has a white appearance.
実施例 以下、本発明の実施例について図面を用いて説明す
る。Examples Hereinafter, examples of the present invention will be described with reference to the drawings.
実施例１ 第１図において、１は内径9mmの石英製発光管内にNa
I:T1I:TmI3:HoI3:DyI3の組成で金属ハロゲン化物が2.3m
g、水銀12.3mgおよびアルゴンが100Torr封入された70W
の色温度4300Kの両口金形メタルハライドランプであ
り、２はアルミニウムからなる反射鏡、３は前面ガラス
である。前記前面ガラス３の内面には、SiO2−TiO2から
なる８層の多層干渉膜４が蒸着により形成されている。
多層干渉膜４が形成された前面ガラス３の可視部の分光
透過率は第２図に示すとおりである。すなわち、多層干
渉膜４は主として550nm以下の波長をカットする。4300K
でランプを点灯したときの本発明の照明装置の分光エネ
ルギー分布を第３図に示す。色温度は3000K、平均演色
評価数Raは82であった。Example 1 In FIG. 1, reference numeral 1 denotes Na in a quartz arc tube having an inner diameter of 9 mm.
I: T1I: TmI 3: HoI 3: metal halide in the composition of DyI 3 is 2.3m
g, 12.3 mg of mercury and 70 W containing 100 Torr of argon
Is a double-ended metal halide lamp having a color temperature of 4300K, 2 is a reflecting mirror made of aluminum, and 3 is a front glass. On the inner surface of the front glass 3, an eight-layer multilayer interference film 4 made of SiO 2 —TiO 2 is formed by vapor deposition.
The spectral transmittance of the visible portion of the front glass 3 on which the multilayer interference film 4 is formed is as shown in FIG. That is, the multilayer interference film 4 mainly cuts the wavelength of 550 nm or less. 4300K
FIG. 3 shows the spectral energy distribution of the illuminating device of the present invention when the lamp is turned on in FIG. The color temperature was 3000 K, and the average color rendering index Ra was 82.
なお、上記実施例１では多層干渉膜を前面ガラスの内
面に形成した場合について説明したが、その外面に形成
してもよい。In the first embodiment, the case where the multilayer interference film is formed on the inner surface of the front glass is described. However, the multilayer interference film may be formed on the outer surface.
実施例２ 第４図において、１は内径9mmの石英製発光管内にNa
I:T1I:TmI3:HoI3:DyI3の組成で金属ハロゲン化物が2.3m
g、水銀12.3mgおよびアルゴンが100Torr封入された70W
の色温度4300Kの両口金形メタルハライドランプであ
る。前面ガラス３の内面には、タリウム皮膜５が1.5ミ
クロンの厚さに蒸着され、その上にSiO2−TiO2からなる
８層の多層干渉膜４が蒸着により形成されている。タリ
ウム皮膜５および多層干渉膜４が形成されたガラスの可
視部の分光透過率は第５図に示すとおりである。4300K
でランプを点灯したときの本発明の照明装置の分光エネ
ルギー分布を第６図に示す。色温度は3000K、平均演色
評価数Raは85であった。実施例１の照明装置では光色は
黒体軌跡よりはずれ、やや緑色がかるのに対し、実施例
２の照明装置ではほぼ黒対軌跡上にあり、白色感のある
好ましい光色となることが認められた。Example 2 In FIG. 4, reference numeral 1 denotes Na in a quartz arc tube having an inner diameter of 9 mm.
I: T1I: TmI 3: HoI 3: metal halide in the composition of DyI 3 is 2.3m
g, 12.3 mg of mercury and 70 W containing 100 Torr of argon
Is a double-ended metal halide lamp with a color temperature of 4300K. A thallium film 5 is deposited on the inner surface of the front glass 3 to a thickness of 1.5 μm, and an eight-layer multilayer interference film 4 composed of SiO 2 —TiO 2 is formed thereon by vapor deposition. The spectral transmittance of the visible portion of the glass on which the thallium film 5 and the multilayer interference film 4 are formed is as shown in FIG. 4300K
FIG. 6 shows the spectral energy distribution of the illuminating device of the present invention when the lamp is turned on by. The color temperature was 3000 K, and the average color rendering index Ra was 85. In the lighting device of the first embodiment, the light color deviates from the black body locus and is slightly greenish, whereas in the lighting device of the second embodiment, the light color is substantially on the black pair locus, and it is recognized that a preferable light color having a white feeling is obtained. Was done.
なお、上記実施例２ではタリウム皮膜と多層干渉膜と
の二重層を前面ガラスの内面に形成した場合について説
明したが、その外面に形成してもよい。また、その二重
層の形成順序についても、前面ガラス側に多層干渉膜を
形成し、その上にタリウム皮膜を形成してもよい。In the second embodiment, the case where the double layer of the thallium film and the multilayer interference film is formed on the inner surface of the front glass, but may be formed on the outer surface. Regarding the formation order of the double layers, a multilayer interference film may be formed on the front glass side, and a thallium film may be formed thereon.
なお、多層干渉膜を形成する素材としては、SiO2−Ti
O2の組合せ以外に、SiO2とTa2O5や、SiO2とSi3N2,SiO2
とZrO2,TiO2とAgとTiO2の組合せでも実施例1,2と同様の
効果が得られる。The material for forming the multilayer interference film is SiO 2 -Ti
In addition to the combination of O 2 , SiO 2 and Ta 2 O 5 , and SiO 2 and Si 3 N 2 , SiO 2
The same effects as those of the first and second embodiments can be obtained by a combination of ZrO 2 , TiO 2 , Ag and TiO 2 .
発明の効果 以上説明したように、本発明のメタルハライドランプ
を備えた照明装置によれば、前面ガラスの表面に多層干
渉膜を形成することにより、ランプを交換することなく
色温度3000Kにまで低下させることができ、さらに前面
ガラスに多層干渉膜に加えてタリウム皮膜を形成するこ
とにより、黒対軌跡上にある好ましい光色を得ることが
可能となる。Effect of the Invention As described above, according to the illumination device including the metal halide lamp of the present invention, the color temperature can be reduced to 3000 K without replacing the lamp by forming a multilayer interference film on the surface of the front glass. Further, by forming a thallium film in addition to the multilayer interference film on the front glass, it is possible to obtain a preferable light color on the black pair locus.
第１図は本発明の一実施例である照明装置の一部切欠正
面図、第２図は多層干渉膜の分光透過率を示す図、第３
図は本発明の一実施例の照明装置の分光エネルギー分布
を示す図、第４図は本発明の他の実施例の照明装置の一
部切欠正面図、第５図は同照明装置の分光エネルギー分
布を示す図、第６図は同照明装置に分光透過率を示す図
である。 １……メタルハライドランプ、２……反射鏡、３……前
面ガラス、４……多層干渉膜、５……タリウム皮膜。FIG. 1 is a partially cutaway front view of an illumination device according to an embodiment of the present invention, FIG. 2 is a diagram showing a spectral transmittance of a multilayer interference film, FIG.
FIG. 4 is a diagram showing a spectral energy distribution of a lighting device according to one embodiment of the present invention, FIG. 4 is a partially cutaway front view of a lighting device according to another embodiment of the present invention, and FIG. FIG. 6 is a diagram showing the distribution, and FIG. 6 is a diagram showing the spectral transmittance of the illumination device. 1. Metal halide lamp 2. Reflector 3. Front glass 4. Multilayer interference film 5. Thallium film.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 斎藤 直樹 大阪府門真市大字門真1006番地 松下電 子工業株式会社内 (56)参考文献 特開 平１−251503（ＪＰ，Ａ) 特開 平２−51103（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Naoki Saito 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electronics Corporation (56) References JP-A-1-251503 (JP, A) JP-A-2- 51103 (JP, A)
Claims (2)
に設けられ、発光管内に金属ハロゲン化物を封入した色
温度3500〜4800Kのメタルハライドランプとを有する照
明装置において、前記ガラスの表面に、タリウム皮膜と
多層干渉膜との二重層を形成したことを特徴とするメタ
ルハライドランプを備えた照明装置。1. A lighting apparatus comprising: a fixture having a glass on the front surface; and a metal halide lamp provided in the fixture and having a color temperature of 3500 to 4800K, in which a metal halide is sealed in an arc tube. A lighting device equipped with a metal halide lamp, wherein a double layer of a thallium film and a multilayer interference film is formed.
O2−Si3N2、SiO2−ZrO2またはTiO2−Ag−TiO2からなる
ことを特徴とする請求項１記載のメタルハライドランプ
を備えた照明装置。2. The multilayer interference film is made of SiO 2 —TiO 2 , SiO 2 —Ta 2 O 5 , Si
O 2 -Si 3 N 2, SiO 2 -ZrO lighting apparatus having a metal halide lamp of claim 1, wherein 2 or consisting of TiO 2 -Ag-TiO 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1070903A JP2718986B2 (en) | 1989-03-23 | 1989-03-23 | Lighting device with metal halide lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1070903A JP2718986B2 (en) | 1989-03-23 | 1989-03-23 | Lighting device with metal halide lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02250201A JPH02250201A (en) | 1990-10-08 |
| JP2718986B2 true JP2718986B2 (en) | 1998-02-25 |
Family
ID=13444954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1070903A Expired - Lifetime JP2718986B2 (en) | 1989-03-23 | 1989-03-23 | Lighting device with metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2718986B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01251503A (en) * | 1988-03-31 | 1989-10-06 | Toshiba Lighting & Technol Corp | Lighting device |
| JPH0251103A (en) * | 1988-08-13 | 1990-02-21 | Iwasaki Electric Co Ltd | Light interference body |
-
1989
- 1989-03-23 JP JP1070903A patent/JP2718986B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02250201A (en) | 1990-10-08 |
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