KR930003836B1 - Starter of hot cathode type low pressure rare gas discharge lamp - Google Patents
Starter of hot cathode type low pressure rare gas discharge lamp Download PDFInfo
- Publication number
- KR930003836B1 KR930003836B1 KR1019930000336A KR930000336A KR930003836B1 KR 930003836 B1 KR930003836 B1 KR 930003836B1 KR 1019930000336 A KR1019930000336 A KR 1019930000336A KR 930000336 A KR930000336 A KR 930000336A KR 930003836 B1 KR930003836 B1 KR 930003836B1
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- South Korea
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- hot cathode
- discharge lamp
- gas discharge
- rare gas
- low pressure
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/02—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J7/06—Selection of substances for gas fillings; Specified operating pressure or temperature having helium, argon, neon, krypton, or xenon as the principal constituent
Abstract
내용 없음.No content.
Description
제1도는 본원 발명의 실시예에 있어서 사용한 열음극형 저합희가스방전램프의 일부 종단측면도.1 is a partial longitudinal sectional side view of a hot cathode type low emission gas discharge lamp used in the embodiment of the present invention.
제2도는 직류점등과 교류점등한 경우의 램프전류에 대한 휘도의 변화를 나타낸 그래프.2 is a graph showing the change in luminance with respect to the lamp current in the case of DC lighting and AC lighting.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
(1) : 벌브 (2) : 형광체증(1): Bulb (2): Fluorosis
(3) : 반사막 (4) : 전극(3): reflecting film (4): electrode
(5) : 슬릿(5): slit
본원 발명은 팩시밀리, 복사기 등의 사무자동화(OA)관련기기에 사용하는 열음극형 저압희(希)가스방전램프의 점등장치에 관한 것이다.The present invention relates to a lighting device for a hot cathode type low pressure gas discharge lamp for use in office automation (OA) related equipment such as facsimile machines and copiers.
종래의 저압수은증기방전램프는 상용 주파수(50, 60Hz)로 점등되고 있으나, 예를 들면 1985년도의 일본국 조명학회 전국대회에서도 보고된 바와 같이, 교류고주파로 점등하면 효율이 개선되고, 광출력이 향상된다는 것이 알려져 있다. 그러나, 산업응용기기용 광원으로서는 아직 불충분하였다. 또, 이 수은증기방전램프에서는 단부명멸방지책으로서 직류로 점등하는 것도 검토되고 있으며, 예를들면 데스크램프 등에서는 이미 이 방식의 것이 상품화되어 있다. 그러나, 이 방식의 것은 연속점등하고 있으면 수은이온의 음금측으로 모여서, 양극측에서 수은이온이 과소하게 되므로, 양음 양극간에 휘도분포가 비정상적으로 되어서, 이른바 카타포리시스(cataphoresis)현상을 일으킨다. 그러므로, 휘도분포의 균일성이 요구되는 산업응용기기용 광원에는 적합하지 않았다.Conventional low-pressure mercury vapor discharge lamps are lit at commercial frequencies (50 and 60 Hz), but as reported in the National Lighting Society of Japan in 1985, for example, lighting at AC high frequency improves efficiency and light output. It is known that this improvement. However, it is still insufficient as a light source for industrial applications. In addition, in this mercury vapor discharge lamp, the lighting by DC is also considered as a measure to prevent end flickering. For example, a desk lamp or the like has already been commercialized. However, in this type of system, when it is continuously lit, the mercury ions are collected on the negative electrode side of the mercury ions, and the mercury ions are reduced on the positive electrode side, resulting in abnormal luminance distribution between the positive and negative electrodes, which causes a so-called cataphoresis phenomenon. Therefore, it is not suitable for the light source for industrial application which requires uniformity of luminance distribution.
한편, 희가스방전램프로서는 냉음극타입의 것이 이미 상품화(해리슨 전기(주)제의 HCB 램프)되어 있다. 이 램프는 25KHz의 고주파인버터에 의해 점등하는 고휘도, 고효율의 것이며, 희가스방전에 특유의 비온도 의존성과 준시안정성을 가지고 있다.On the other hand, as the rare gas discharge lamp, a cold cathode type product has already been commercialized (HCB lamp manufactured by Harrison Electric Co., Ltd.). This lamp is of high brightness and high efficiency, which is lit by a high frequency inverter of 25KHz, and has specific temperature dependence and quasi-cyanide characteristic peculiar to rare gas discharge.
그러나, 이 타입의 희가스방전램프는 냉음극방전에 있어서의 램프전류를 크게 할 수 없으므로, 휘도를 올리는 것은 곤란하며, 거듭되는 고휘도화의 요망에 부응할 수 없었다.However, this type of rare gas discharge lamp cannot increase the lamp current in cold cathode discharge, and therefore, it is difficult to increase the luminance, and it cannot meet the demand for repeated high luminance.
또, 램프전압이 매우 높으므로, 램프의 취급에 위험이 수반되는 문제가 있었다.In addition, since the lamp voltage is very high, there is a problem that the risk of handling the lamp is accompanied.
본원 발명은 이와 같은 종래의 문제점을 해결하기 위해 이루어진 것으로서, 높은 휘도를 내고, 또한 균일한 휘도분포를 얻을 수 있는 동시에, 램프전압을 높이지 않고, 따라서 램프의 취급에 위험이 따르지 않은 열음극형 저압희가스방전램프의 점등장치를 제공하는 것을 목적으로 한다.SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and it is possible to obtain a high luminance, obtain a uniform luminance distribution, and not increase the lamp voltage, and thus a hot cathode type low pressure that does not pose a risk in handling the lamp. It is an object to provide a lighting device for a rare gas discharge lamp.
본원 발명이 제공하는 열음극형 저압희가스방전램프의 점등장치는, 유리벌브내에 최소한 안전방전상태에서 열음극으로서 동작하는 전극을 포함하는 한쌍의 전극을 배설하고, 상기 유리벌브내면에 형광체층을 형성하고, 다시 내부에 발광가스를 봉입하고, 방번에 의해 이발광가스가 발하는 방사로 상기 형광체층을 발광시키는 열음극형 저압희가스방전램프를 직류로 점등하는 것을 특징으로 한다.The lighting device of a hot cathode type low pressure rare gas discharge lamp provided by the present invention includes a pair of electrodes including an electrode which operates as a hot cathode at least in a safe discharge state, and forms a phosphor layer on the inner surface of the glass bulb, It is characterized in that the hot cathode type low pressure rare gas discharge lamp for emitting the above-mentioned phosphor layer by the emission of the luminescent gas emitted by the explosion and the light emitting gas is turned on by direct current.
다음에, 본원 발명의 실시예에 대하여 도면에 따라서 상세히 설명한다.EMBODIMENT OF THE INVENTION Next, the Example of this invention is described in detail according to drawing.
제1도는 실시예에 있어서 사용한 열음극형 저압희가스방전램프의 일부종단측면도이다.1 is a partial longitudinal sectional side view of a hot cathode type low pressure rare gas discharge lamp used in the embodiment.
도면에 있어서, (1)은 벌브, (2)는 형광체층, (3)은 반사막, (4)는 전극, (5)는 슬릿이다. 벌브(1)는 외경 8mm의 소다라임유리벌브이고, 양단부에 한쌍의 전극(4)의 봉착(封着)되어 있다. 전극간 거리는 260mm이다. 전극(4)은 전자방사성 물질을 도포한 트리플릴라멘트코일을 사용한 열음극형의 것이다. 형광체층(2)은 가세이(化成)옵토닉스(Optonin)사제의 Zn2SiO4Mn 녹색형광체로 이루어진다. 반사막(3)은 이 형광체층(2)과 벌브(1)사이에 형성되어 있다. 반사막(3)과 형광체층(2)은 모두 폭 2mm의 직선슬릿(5)을 관길이 방향으로 배설한 애퍼쳐형으로 되어 있다. 도시하지 않으나, 벌브(1)내에는 발광가스로서 Xe : 10%, Ne : 90%의 혼합가스가 0.8Torr 봉입되고, 전극(4) 근방에는 증발형 바륨게터(barium getter)가 배설되어 있다.In the figure, (1) is a bulb, (2) is a phosphor layer, (3) is a reflective film, (4) is an electrode, and (5) is a slit. The bulb 1 is a soda-lime glass bulb having an outer diameter of 8 mm, and a pair of electrodes 4 are sealed at both ends. The distance between electrodes is 260 mm. The electrode 4 is of a hot cathode type using a triple filament coil coated with an electron-radioactive material. The phosphor layer 2 is made of Zn 2 SiO 4 Mn green phosphor made by Kasei Optonix. The reflective film 3 is formed between the phosphor layer 2 and the bulb 1. Both the reflecting film 3 and the phosphor layer 2 have an aperture type in which a straight slit 5 having a width of 2 mm is disposed in the tube length direction. Although not shown, a mixed gas of Xe: 10% and Ne: 90% is enclosed in the bulb 1 with 0.8 Torr as a light emitting gas, and an evaporative barium getter is disposed in the vicinity of the electrode 4.
제2도는 상기 램프를 직류점등한 경우와 교류점등한 경우의 램프에 대한 휘도의 변화를 나타낸 그래프이다. 휘도의 측정은 램프중앙의 애퍼쳐개구부 중심의 값을 측정하였다. 직류점등에 있어서는, 한쪽 필라멘트의 양단리드를 단락하여 양극으로 하였다. 도면중, 실선이 직류점등, 점선이 교류점등의 경우이다. 교류는 65KHz의 주파수를 고정시켜 측정하였다. 휘도는 직류점등 55mA시의 휘도를 100%로 하여 상대치로 표시하였다.2 is a graph showing a change in luminance with respect to the lamps when the lamps are DC-lit and AC-lit. The luminance was measured by measuring the center of the aperture opening in the center of the lamp. In direct current lighting, both end leads of one filament were short-circuited to make an anode. In the figure, the solid line is a direct current light, and the dotted line is an alternating light. AC was measured by fixing a frequency of 65KHz. Luminance was expressed by relative value with the luminance at the time of direct current lighting 55 mA as 100%.
도면에서 명백한 바와 같이, 통상 발열이 문제로 되지 않을 정도의 100mA 이하에서는 직류점등쪽이 휘도가 높고, 최고휘도에서 10%이상 차가 있었다. 램프전류는 실효치이며, 직류점등시의 램프전압은 교류점등시보다 약 30V정도 높았다. 또, 램프전류 50mA에서 1000시간 연속점등 하였으나, 카타포리시스현상은 발생하지 않았다.As is apparent from the drawing, at 100 mA or less, in which heat generation does not usually become a problem, the DC lighting side has a high luminance and a difference of 10% or more at the highest luminance. The lamp current is an effective value, and the lamp voltage at the time of DC lighting was about 30V higher than that at the time of AC lighting. In addition, the lamp was continuously turned on for 1000 hours at a lamp current of 50 mA, but no cataphoresis phenomenon occurred.
또한, 교류점등은 65KHz를 예로들어 설명하였으나, 다른 주파수에서도 같았다. 또, 직류점등용으로서 양극측에 전자방사물질을 도포하지 않은 텅스텐봉을 설치하고, 리드선을 1개로 해보았으나, 결과는 동일하였다. 가스도 Xe이외의 희가스 또는 N2가스를 사용해 보았으나, 또 형체층과 반사막의 종류 및 애퍼쳐의 형태도 바꾸어 보았으나, 결과는 동일하였다.In addition, the AC lighting was described using 65 KHz as an example, but the same at other frequencies. In addition, although the tungsten rod which did not apply the electromagnetic radiation substance was installed in the anode side for direct current | flow lighting, and tried to make one lead wire, the result was the same. Although the gas was also used as a rare gas other than Xe or N 2 gas, the type of the shape layer and the reflecting film and the shape of the aperture were also changed, but the results were the same.
이상 설명한 바와 같이, 본원 발명에 의하면 열음극형 저압희가스방전램프를 직류로 점등하므로, 교류점등으로는 어떠한 램프전류에서도 내지 못했던 높은 휘도를 낼 수 있다. 또, 카타포리시스현상이 발생하지 않으며, 따라서 균일한 휘도분포를 얻을 수 있다.As described above, according to the present invention, since the hot cathode type low pressure rare gas discharge lamp is turned on by direct current, it is possible to produce high luminance which cannot be achieved by any lamp current by the AC lighting. Moreover, cataphoresis does not occur, and therefore, uniform luminance distribution can be obtained.
또한, 직류도 점등하므로 램프전압은 상승하나, 원래 방전램프의 램프전압은 낮으므로, 램프취급에 위험이 따르지 않는다.In addition, since the direct current also turns on, the lamp voltage increases, but since the lamp voltage of the original discharge lamp is low, there is no danger in handling the lamp.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019930000336A KR930003836B1 (en) | 1989-06-16 | 1993-01-13 | Starter of hot cathode type low pressure rare gas discharge lamp |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1154214A JP2932505B2 (en) | 1989-06-16 | 1989-06-16 | Lighting method of hot cathode low pressure rare gas discharge lamp |
JP89-154,214 | 1989-06-16 | ||
KR1019900008489A KR920010666B1 (en) | 1989-06-13 | 1990-06-11 | Low pressure rare gas arcing lamp |
KR1019930000336A KR930003836B1 (en) | 1989-06-16 | 1993-01-13 | Starter of hot cathode type low pressure rare gas discharge lamp |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019900008489A Division KR920010666B1 (en) | 1989-06-13 | 1990-06-11 | Low pressure rare gas arcing lamp |
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KR930003836B1 true KR930003836B1 (en) | 1993-05-13 |
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KR1019930000336A KR930003836B1 (en) | 1989-06-16 | 1993-01-13 | Starter of hot cathode type low pressure rare gas discharge lamp |
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1993
- 1993-01-13 KR KR1019930000336A patent/KR930003836B1/en not_active IP Right Cessation
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