JPH06283142A - Discharge lamp and instrument - Google Patents

Discharge lamp and instrument

Info

Publication number
JPH06283142A
JPH06283142A JP6871493A JP6871493A JPH06283142A JP H06283142 A JPH06283142 A JP H06283142A JP 6871493 A JP6871493 A JP 6871493A JP 6871493 A JP6871493 A JP 6871493A JP H06283142 A JPH06283142 A JP H06283142A
Authority
JP
Japan
Prior art keywords
discharge lamp
temperature
power supply
fluorescent lamp
control circuit
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
Application number
JP6871493A
Other languages
Japanese (ja)
Inventor
Masaharu Baba
正治 馬場
Shigeru Senzaki
茂 千崎
Yoshinori Sato
嘉典 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Lighting and Technology Corp
Original Assignee
Toshiba Lighting and Technology Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Lighting and Technology Corp filed Critical Toshiba Lighting and Technology Corp
Priority to JP6871493A priority Critical patent/JPH06283142A/en
Publication of JPH06283142A publication Critical patent/JPH06283142A/en
Pending legal-status Critical Current

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  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE:To provide a discharge lamp capable of improving the build-up of the lamp at the time of a low-temperature start. CONSTITUTION:A fluorescent lamp 1 serving as a discharge lamp is provided with a fluorescent lamp 2, a power source 6 capable of feeding power to the fluorescent lamp 2, temperature detecting sensors 4, 5 arranged at prescribed positions, and a power control circuit 8 capable of controlling the power source 6 in response to the temperature detected by the temperature detecting sensors 4, 5. The power control circuit 8 controls the voltage of the power source 6 to increase the current flowing in the fluorescent lamp 2 larger than the rated value when the temperature detected by the temperature detecting sensors 4, 5 is the preset temperature or below.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、蛍光灯等の放電灯及び
計器に係り、特に、低温スタート時の迅速な立上がりが
要求される放電灯及び計器に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge lamp such as a fluorescent lamp and an instrument, and more particularly to a discharge lamp and an instrument which require a quick start-up at a low temperature start.

【0002】[0002]

【従来の技術】放電灯例えば蛍光灯は、非常に広範囲の
用途に用いられており、本来の照明目的の他に自動車計
器の液晶パネル等のバックライトとしても応用されてい
る。
2. Description of the Related Art Discharge lamps, such as fluorescent lamps, are used in a very wide range of applications, and are also used as backlights for liquid crystal panels of automobile instruments in addition to the original purpose of illumination.

【0003】また、使用される環境についても様々であ
り、蛍光灯を室温以外の温度例えば低温下で作動させね
ばならない場合も生じてくる。
Also, there are various environments in which the fluorescent lamp must be operated at a temperature other than room temperature, for example, at a low temperature.

【0004】ここで、蛍光ランプは、周囲温度が低いと
バルブ内の水銀蒸気圧が小さくなって紫外線の発生効率
が低下し、結果的に蛍光ランプが暗くなる。
Here, in a fluorescent lamp, when the ambient temperature is low, the mercury vapor pressure in the bulb becomes small and the efficiency of generating ultraviolet rays decreases, resulting in the darkening of the fluorescent lamp.

【0005】そのため、蛍光ランプのバルブ外面にヒー
ターを設けておき、低温スタート時に上述のヒーターを
通電するようにした蛍光灯がある。
Therefore, there is a fluorescent lamp in which a heater is provided on the outer surface of the bulb of the fluorescent lamp and the above-mentioned heater is energized at low temperature start.

【0006】かかる蛍光灯においては、ヒーターによっ
て蛍光ランプが所定の温度に加熱され、低温スタート時
の立上がりの悪さを若干改善することができる。
In such a fluorescent lamp, the fluorescent lamp is heated to a predetermined temperature by the heater, so that the poor start-up at the time of low temperature start can be slightly improved.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、上述の
構成では、ヒーターへの通電が開始されてから実際に蛍
光ランプが所定温度に達するまでに相当の時間を要し、
低温スタート時の立上がりを改善するには限度があっ
た。
However, in the above-mentioned configuration, it takes a considerable time from the start of energization of the heater until the fluorescent lamp actually reaches a predetermined temperature,
There was a limit to improving the rise at low temperature start.

【0008】そのため、蛍光灯を液晶パネルのバックラ
イトとして使用する場合、蛍光ランプがなかなか明るく
ならず、しばらくの間、表示板の識別が困難であるとい
う問題が生じていた。
Therefore, when a fluorescent lamp is used as a backlight of a liquid crystal panel, the fluorescent lamp is not bright enough, and there is a problem that the display plate is difficult to identify for a while.

【0009】本発明は、上述した事情を考慮してなされ
たもので、低温スタート時にランプの立上がりを改善す
ることができる放電灯及び計器を提供することを目的と
する。
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a discharge lamp and a meter which can improve the rise of the lamp at the time of low temperature start.

【0010】[0010]

【課題を解決するための手段】上記目的を達成するた
め、本発明の放電灯は請求項1に記載したように、放電
ランプと、前記放電ランプに電力を供給可能な電源とを
備えた放電灯において、所定の位置に配置された温度検
出センサと、前記温度検出センサで検出された温度に応
じて前記電源を制御可能な電源制御回路とを備え、前記
電源制御回路は、前記温度が所定の設定温度以下である
ときに前記放電ランプ内を流れる電流が定格値よりも大
きくなるように前記電源の電圧を制御するようにしたも
のである。
In order to achieve the above object, a discharge lamp of the present invention has a discharge lamp and a power source capable of supplying electric power to the discharge lamp, as described in claim 1. The electric lamp includes a temperature detection sensor arranged at a predetermined position, and a power supply control circuit capable of controlling the power supply according to the temperature detected by the temperature detection sensor. The voltage of the power supply is controlled so that the current flowing in the discharge lamp becomes larger than the rated value when the temperature is below the set temperature.

【0011】また、本発明の計器は請求項4に記載した
ように、放電ランプと前記放電ランプに電力を供給可能
な電源とを有する放電灯をバックライトとして備えた計
器において、前記放電灯は、所定の位置に配置された温
度検出センサと、前記温度検出センサで検出された温度
に応じて前記電源を制御可能な電源制御回路とを備え、
前記電源制御回路は、前記温度が所定の設定温度以下で
あるときに前記放電ランプ内を流れる電流が定格値より
も大きくなるように前記電源の電圧を制御するようにし
たものである。
According to a fourth aspect of the present invention, in a meter equipped with a discharge lamp having a discharge lamp and a power source capable of supplying electric power to the discharge lamp as a backlight, the discharge lamp is A temperature detection sensor arranged at a predetermined position, and a power supply control circuit capable of controlling the power supply according to the temperature detected by the temperature detection sensor,
The power supply control circuit is configured to control the voltage of the power supply so that the current flowing in the discharge lamp becomes larger than a rated value when the temperature is equal to or lower than a predetermined set temperature.

【0012】[0012]

【作用】本発明の放電灯あるいは計器においては、温度
検出センサで所定の位置、例えば放電ランプ近傍位置で
の温度を検出し、この温度が所定の設定温度以下である
とき、上述の電源の電圧を制御して放電ランプ内を流れ
る電流を定格値よりも大きくする。
In the discharge lamp or meter of the present invention, the temperature detection sensor detects the temperature at a predetermined position, for example, the position near the discharge lamp, and when this temperature is below a predetermined set temperature, the voltage of the power source described above is detected. Is controlled to make the current flowing in the discharge lamp larger than the rated value.

【0013】[0013]

【実施例】以下、本発明の放電灯を、計器の液晶パネル
のバックライトに用いる蛍光灯に適用した場合の実施例
について、添付図面を参照して説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the discharge lamp of the present invention is applied to a fluorescent lamp used as a backlight of a liquid crystal panel of an instrument will be described below with reference to the accompanying drawings.

【0014】図1は、本実施例の蛍光灯をブロック図で
示したものである。
FIG. 1 is a block diagram showing the fluorescent lamp of this embodiment.

【0015】本実施例の蛍光灯1は、両端を封止した放
電ランプとしての蛍光ランプ2と、蛍光ランプ2に電力
を供給可能な電源6とを備え、蛍光ランプ2は、図示し
ない液晶パネルの背面にバックライトとして配置してあ
る。
The fluorescent lamp 1 of this embodiment comprises a fluorescent lamp 2 as a discharge lamp whose both ends are sealed, and a power source 6 capable of supplying electric power to the fluorescent lamp 2. The fluorescent lamp 2 is a liquid crystal panel (not shown). It is placed as a backlight on the back of the.

【0016】蛍光ランプ2のバルブ外面には、蛍光ラン
プ2を加熱可能なヒーター3を管軸に沿って設けてあ
り、ヒーター電源7によって所定の電力供給を受けるこ
とができるようになっている。
A heater 3 capable of heating the fluorescent lamp 2 is provided along the tube axis on the outer surface of the bulb of the fluorescent lamp 2 so that a predetermined power can be supplied from a heater power source 7.

【0017】ヒーター3は、図示しない収縮チューブに
よってバルブ外面に取り付けてもよいし、耐熱性接着剤
でバルブ外面に貼付してもよい。
The heater 3 may be attached to the outer surface of the valve by a shrink tube (not shown), or may be attached to the outer surface of the valve with a heat resistant adhesive.

【0018】蛍光ランプ2の近傍、例えばバルブ外面に
は、蛍光ランプ2の温度を検出可能な温度検出センサ、
例えばサーミスタ4を配置してある。また、蛍光ランプ
2から離れた所定の位置に、周囲の環境温度を検出可能
な別のサーミスタ5を配置してある。
In the vicinity of the fluorescent lamp 2, for example, on the outer surface of the bulb, a temperature detecting sensor capable of detecting the temperature of the fluorescent lamp 2,
For example, the thermistor 4 is arranged. Further, another thermistor 5 capable of detecting the ambient environmental temperature is arranged at a predetermined position apart from the fluorescent lamp 2.

【0019】本実施例の蛍光灯1は、電源6およびヒー
ター電源7を、サーミスタ4、5で検出された温度に応
じて制御可能な電源制御回路8を備える。すなわち、電
源制御回路8は、サーミスタ4、5で検出された温度が
ともに所定の設定温度以下であるとき、蛍光ランプ2内
を流れる電流が定格値よりも大きくなるように電源6の
電圧を制御するとともに、ヒーター3が通電されるよう
にヒーター電源7を駆動する(以下、低温スタートモー
ドと呼ぶ)。
The fluorescent lamp 1 of this embodiment is provided with a power supply control circuit 8 capable of controlling the power supply 6 and the heater power supply 7 according to the temperatures detected by the thermistors 4 and 5. That is, the power supply control circuit 8 controls the voltage of the power supply 6 so that the current flowing in the fluorescent lamp 2 becomes larger than the rated value when both the temperatures detected by the thermistors 4 and 5 are equal to or lower than a predetermined set temperature. At the same time, the heater power supply 7 is driven so that the heater 3 is energized (hereinafter, referred to as low temperature start mode).

【0020】一方、電源制御回路8は、サーミスタ4、
5で検出された温度のいずれが所定の設定温度以上であ
るとき、蛍光ランプ2内を流れる電流が定格値になるよ
うに電源6の電圧を制御するとともにヒーター3が通電
されないようにヒーター電源7を駆動する(以下、定格
モードとよぶ)。
On the other hand, the power supply control circuit 8 includes the thermistor 4,
When any of the temperatures detected in 5 is higher than a predetermined set temperature, the voltage of the power supply 6 is controlled so that the current flowing in the fluorescent lamp 2 becomes a rated value, and the heater power supply 7 is set so that the heater 3 is not energized. Drive (hereinafter referred to as the rated mode).

【0021】図2は、本実施例の蛍光灯の動作を説明し
たフローチャートである。
FIG. 2 is a flow chart for explaining the operation of the fluorescent lamp of this embodiment.

【0022】同図でわかるように、本実施例の蛍光灯1
においては、サーミスタ4で検出された温度が所定の設
定温度以上、すなわち蛍光ランプ2が低温でない場合に
は(ステップ11、NO)、電源制御回路8を定格モー
ドで作動させる(ステップ15)。
As can be seen from the figure, the fluorescent lamp 1 of this embodiment
When the temperature detected by the thermistor 4 is equal to or higher than a predetermined set temperature, that is, when the fluorescent lamp 2 is not at a low temperature (step 11, NO), the power supply control circuit 8 is operated in the rated mode (step 15).

【0023】サーミスタ4で検出された温度が所定の設
定温度以下すなわち蛍光ランプ2が低温の場合であって
も(ステップ11、YES)、サーミスタ5で検出され
た温度が所定の設定温度以上、すなわち周囲温度が低温
ではない場合(ステップ12、NO)、上述と同様、電
源制御回路8を定格モードで作動させる(ステップ1
5)。
Even if the temperature detected by the thermistor 4 is lower than the predetermined set temperature, that is, when the fluorescent lamp 2 is at a low temperature (step 11, YES), the temperature detected by the thermistor 5 is higher than the predetermined set temperature, that is, When the ambient temperature is not low (step 12, NO), the power supply control circuit 8 is operated in the rated mode as described above (step 1).
5).

【0024】一方、サーミスタ4、5で検出された温度
がいずれも所定の設定温度以下、すなわち蛍光ランプ2
も周囲の環境も低温である場合には(ステップ12、Y
ES)、電源制御回路8を低温スタートモードで作動さ
せる(ステップ13)。
On the other hand, all the temperatures detected by the thermistors 4 and 5 are below a predetermined set temperature, that is, the fluorescent lamp 2
And the surrounding environment is also low temperature (Step 12, Y
ES), the power supply control circuit 8 is operated in the low temperature start mode (step 13).

【0025】次いで、サーミスタ4、5で検出されたい
ずれかの温度が所定の設定温度以上となった場合(ステ
ップ14、YES)、電源制御回路8を定格モードに切
り換えて作動させる。
Next, if any of the temperatures detected by the thermistors 4 and 5 exceeds a predetermined set temperature (step 14, YES), the power supply control circuit 8 is switched to the rated mode and operated.

【0026】以上説明したように本実施例の蛍光灯は、
検出された温度が低温のときに定格電流よりも大きな電
流を蛍光ランプに流すようにしたので、低温スタート時
における光束を従来よりも増加させることができる。
As described above, the fluorescent lamp of this embodiment is
Since a current larger than the rated current is passed through the fluorescent lamp when the detected temperature is low, the luminous flux at the time of low temperature start can be increased more than before.

【0027】したがって、従来のように低温スタート時
には所定時間経過しないと蛍光ランプが明るくならない
という事態を回避することができ、低温時においても蛍
光ランプをただちに明るくすることができる。
Therefore, it is possible to avoid the situation that the fluorescent lamp does not become bright until a predetermined time elapses at the time of low temperature start as in the conventional case, and the fluorescent lamp can be immediately made bright even at the low temperature.

【0028】上述の実施例では、蛍光灯を例として説明
したが、本発明は蛍光灯に限定されるものではなく、ア
ーク放電を利用した他の放電灯例えば水銀灯にも適用す
ることができる。
In the above-mentioned embodiments, the fluorescent lamp has been described as an example, but the present invention is not limited to the fluorescent lamp and can be applied to other discharge lamps utilizing arc discharge, for example, a mercury lamp.

【0029】また、上述の実施例では、定格値よりも大
きなランプ電流を流すのみならず、バルブの外面に設け
たヒーターを通電するように構成したが、場合によって
はヒーターを省略し、ランプ電流だけを制御するように
してもよい。
Further, in the above-described embodiment, not only the lamp current larger than the rated value is supplied, but also the heater provided on the outer surface of the bulb is energized. However, in some cases, the heater may be omitted and the lamp current may be omitted. You may make it control only.

【0030】また、上述の実施例では、2つのサーミス
タを蛍光ランプ近傍位置と蛍光ランプから離れた位置の
2か所に配置し、これら2つのサーミスタの検出値を両
方用いて電源制御回路で電源およびヒーター電源を制御
するように構成したが、いずれか一方だけを配置し、そ
の検出値だけを用いて制御するように構成してもよい。
すなわち、蛍光ランプ温度だけを用いて制御してもよい
し、周囲温度だけを用いて制御してもよい。
Further, in the above-described embodiment, two thermistors are arranged at two positions near the fluorescent lamp and at a position apart from the fluorescent lamp, and the power control circuit uses the detection values of these two thermistors to supply the power. Although the heater power supply is controlled, only one of them may be arranged and the detection value may be used for control.
That is, control may be performed using only the fluorescent lamp temperature or only ambient temperature.

【0031】また、上述の実施例では、計器の液晶パネ
ルのバックライトに用いる蛍光灯に適用した例を説明し
たが、本発明の放電灯はかかる応用に限定されるもので
なく、通常の屋内あるいは屋外照明用の蛍光灯に適用し
てもよい。
Further, in the above-mentioned embodiment, the example applied to the fluorescent lamp used as the backlight of the liquid crystal panel of the instrument has been described, but the discharge lamp of the present invention is not limited to such an application, and it can be used in a normal indoor environment. Alternatively, it may be applied to a fluorescent lamp for outdoor lighting.

【0032】[0032]

【発明の効果】以上述べたように、本発明の放電灯は、
放電ランプと、前記放電ランプに電力を供給可能な電源
とを備えた放電灯において、所定の位置に配置された温
度検出センサと、前記温度検出センサで検出された温度
に応じて前記電源を制御可能な電源制御回路とを備え、
前記電源制御回路は、前記温度が所定の設定温度以下で
あるときに前記放電ランプ内を流れる電流が定格値より
も大きくなるように前記電源の電圧を制御するようにし
たので、低温スタート時にランプの立上がりを迅速に行
うことができる。
As described above, the discharge lamp of the present invention is
In a discharge lamp including a discharge lamp and a power supply capable of supplying electric power to the discharge lamp, a temperature detection sensor arranged at a predetermined position, and controlling the power supply according to the temperature detected by the temperature detection sensor With a possible power control circuit,
Since the power supply control circuit controls the voltage of the power supply so that the current flowing in the discharge lamp becomes larger than the rated value when the temperature is equal to or lower than a predetermined set temperature, the lamp is started at a low temperature. Can be quickly started up.

【0033】また、本発明の計器は、放電ランプと、前
記放電ランプに電力を供給可能な電源とを有する放電灯
をバックライトとして備えた計器において、前記放電灯
は、所定の位置に配置された温度検出センサと、前記温
度検出センサで検出された温度に応じて前記電源を制御
可能な電源制御回路とを備え、前記電源制御回路は、前
記温度が所定の設定温度以下であるときに前記放電ラン
プ内を流れる電流が定格値よりも大きくなるように前記
電源の電圧を制御するようにしたので、低温スタート時
にランプの立上がりを迅速に行うことができる。
Further, the instrument of the present invention is an instrument provided with a discharge lamp having a discharge lamp and a power source capable of supplying electric power to the discharge lamp as a backlight, wherein the discharge lamp is arranged at a predetermined position. A temperature detection sensor, and a power supply control circuit capable of controlling the power supply according to the temperature detected by the temperature detection sensor, the power supply control circuit, when the temperature is below a predetermined set temperature, Since the voltage of the power supply is controlled so that the current flowing in the discharge lamp becomes larger than the rated value, the lamp can be quickly started at the low temperature start.

【図面の簡単な説明】[Brief description of drawings]

【図1】本実施例の蛍光灯のブロック図。FIG. 1 is a block diagram of a fluorescent lamp of this embodiment.

【図2】本実施例の蛍光灯の動作を示したフローチャー
ト。
FIG. 2 is a flowchart showing the operation of the fluorescent lamp of this embodiment.

【符号の説明】 1 蛍光灯(放電灯) 2 蛍光ランプ(放電ランプ) 3 ヒーター 4、5 サーミスタ(温度検出センサ) 6 電源 7 ヒーター電源 8 電源制御回路[Explanation of symbols] 1 fluorescent lamp (discharge lamp) 2 fluorescent lamp (discharge lamp) 3 heater 4, 5 thermistor (temperature detection sensor) 6 power supply 7 heater power supply 8 power supply control circuit

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 放電ランプと、前記放電ランプに電力を
供給可能な電源とを備えた放電灯において、所定の位置
に配置された温度検出センサと、前記温度検出センサで
検出された温度に応じて前記電源を制御可能な電源制御
回路とを備え、前記電源制御回路は、前記温度が所定の
設定温度以下であるときに前記放電ランプ内を流れる電
流が定格値よりも大きくなるように前記電源の電圧を制
御するようになっていることを特徴とする放電灯。
1. A discharge lamp including a discharge lamp and a power supply capable of supplying electric power to the discharge lamp, wherein a temperature detection sensor arranged at a predetermined position and a temperature detected by the temperature detection sensor are used. And a power supply control circuit capable of controlling the power supply, wherein the power supply control circuit is configured so that the current flowing in the discharge lamp becomes larger than a rated value when the temperature is equal to or lower than a predetermined set temperature. A discharge lamp characterized in that the voltage of the discharge lamp is controlled.
【請求項2】前記放電ランプのバルブ外面に設けられた
ヒーターと、前記ヒーターに電力を供給可能なヒーター
電源とを備え、前記電源制御回路は、前記温度が所定の
設定温度以下であるときに前記ヒーターが通電されるよ
うに前記ヒーター電源を駆動するようになっている請求
項1記載の放電灯。
2. A heater provided on the outer surface of the bulb of the discharge lamp, and a heater power supply capable of supplying electric power to the heater, wherein the power supply control circuit is configured to operate when the temperature is equal to or lower than a predetermined set temperature. The discharge lamp according to claim 1, wherein the heater power source is driven so that the heater is energized.
【請求項3】 前記温度検出センサを、放電ランプ温度
測定可能位置および周囲温度測定可能位置の少なくとも
いずれかに配置した請求項1記載の放電灯。
3. The discharge lamp according to claim 1, wherein the temperature detection sensor is arranged at at least one of a discharge lamp temperature measurable position and an ambient temperature measurable position.
【請求項4】 放電ランプと前記放電ランプに電力を供
給可能な電源とを有する放電灯をバックライトとして備
えた計器において、前記放電灯は、所定の位置に配置さ
れた温度検出センサと、前記温度検出センサで検出され
た温度に応じて前記電源を制御可能な電源制御回路とを
備え、前記電源制御回路は、前記温度が所定の設定温度
以下であるときに前記放電ランプ内を流れる電流が定格
値よりも大きくなるように前記電源の電圧を制御するよ
うになっていることを特徴とする計器。
4. An instrument provided with, as a backlight, a discharge lamp having a discharge lamp and a power supply capable of supplying electric power to the discharge lamp, wherein the discharge lamp has a temperature detection sensor arranged at a predetermined position, and A power supply control circuit capable of controlling the power supply in accordance with the temperature detected by a temperature detection sensor, wherein the power supply control circuit, when the temperature is below a predetermined set temperature, the current flowing in the discharge lamp An instrument characterized in that the voltage of the power source is controlled so as to be larger than a rated value.
JP6871493A 1993-03-26 1993-03-26 Discharge lamp and instrument Pending JPH06283142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6871493A JPH06283142A (en) 1993-03-26 1993-03-26 Discharge lamp and instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6871493A JPH06283142A (en) 1993-03-26 1993-03-26 Discharge lamp and instrument

Publications (1)

Publication Number Publication Date
JPH06283142A true JPH06283142A (en) 1994-10-07

Family

ID=13381739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6871493A Pending JPH06283142A (en) 1993-03-26 1993-03-26 Discharge lamp and instrument

Country Status (1)

Country Link
JP (1) JPH06283142A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0852391A2 (en) * 1997-01-07 1998-07-08 Sharp Kabushiki Kaisha Illumination device, method for driving the illumination device and display device including the illumination device
EP0989785A2 (en) * 1998-08-26 2000-03-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit improvement for low pressure discharge lamp

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0852391A2 (en) * 1997-01-07 1998-07-08 Sharp Kabushiki Kaisha Illumination device, method for driving the illumination device and display device including the illumination device
EP0852391A3 (en) * 1997-01-07 1998-09-30 Sharp Kabushiki Kaisha Illumination device, method for driving the illumination device and display device including the illumination device
US6066920A (en) * 1997-01-07 2000-05-23 Sharp Kabushiki Kaisha Illumination device, method for driving the illumination device and display including the illumination device
KR100355728B1 (en) * 1997-01-07 2002-11-18 샤프 가부시키가이샤 Illumination device, method for driving the illumination device and display device including the illumination device
EP0989785A2 (en) * 1998-08-26 2000-03-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit improvement for low pressure discharge lamp
EP0989785A3 (en) * 1998-08-26 2000-04-12 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit improvement for low pressure discharge lamp
US6163114A (en) * 1998-08-26 2000-12-19 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Starting circuit for low-pressure discharge lamp
KR100404524B1 (en) * 1998-08-26 2003-11-05 파텐트-트로이한트-게젤샤프트 퓌어 엘렉트리쉐 글뤼람펜 엠베하 Improved starting circuit for low-pressure discharge lamp

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