JPH0453943A - Projection type display device - Google Patents
Projection type display deviceInfo
- Publication number
- JPH0453943A JPH0453943A JP2163502A JP16350290A JPH0453943A JP H0453943 A JPH0453943 A JP H0453943A JP 2163502 A JP2163502 A JP 2163502A JP 16350290 A JP16350290 A JP 16350290A JP H0453943 A JPH0453943 A JP H0453943A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- lamp
- cooling
- cooler
- temperature
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims description 4
- 229910001507 metal halide Inorganic materials 0.000 abstract description 3
- 150000005309 metal halides Chemical class 0.000 abstract description 3
- 229910052724 xenon Inorganic materials 0.000 abstract description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 102100027284 Fanconi-associated nuclease 1 Human genes 0.000 description 1
- 101000914689 Homo sapiens Fanconi-associated nuclease 1 Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Projection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は投写型表示装置の投写光源冷却器制御に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to control of a projection light source cooler of a projection display device.
［従来の技術］
従来、投写型表示装置の投写光源用冷却器は投写光源Ｏ
Ｆ Ｆ ｆ＆も、タイマー等により一定時間ＯＮ時同様
の冷却状態を継続する事により投写光源の温度上昇を防
止していた。[Prior Art] Conventionally, a projection light source cooler of a projection type display device has a projection light source O.
F F f& also prevents the temperature of the projection light source from rising by continuing the same cooling state when turned on for a certain period of time using a timer or the like.
［発明が解決しようとする課題］
しかし、前述の従来技術では特に再起動性の劣る放電燈
（キセノンランプ、メタルハライドランプ等）を投写光
源に用いた場合、−旦メインスイッチをＯＦＦした直後
再度ＯＮＬようとした時ランプ温度の上昇（管内気圧の
上昇）により即時再点灯が不可能となる。 また、通
常のＯＦＦ動作に於いてはメインスイッチＯＦＦ後も冷
却器は長時間動作を続ける結果となり騒音また管理面で
大きな問題である。 ここで再起動性向上のため冷却
能力を極端に上げようとすると通常動作時に於ける動作
騒音の増大また電力消費の点で好ましくない上、投写光
源の色温度及び安定放電に対し悪影響を及ぼす結果とな
る。[Problems to be Solved by the Invention] However, in the above-mentioned conventional technology, when a discharge lamp (such as a xenon lamp or a metal halide lamp), which has particularly poor restartability, is used as a projection light source, the main switch cannot be turned ON again immediately after the main switch is turned OFF. When attempting to do so, it becomes impossible to immediately relight the lamp due to a rise in lamp temperature (increase in tube pressure). Furthermore, in normal OFF operation, the cooler continues to operate for a long time even after the main switch is turned OFF, resulting in serious problems in terms of noise and management. Attempting to extremely increase the cooling capacity to improve restartability will not only increase operating noise during normal operation and reduce power consumption, but will also have an adverse effect on the color temperature and stable discharge of the projection light source. becomes.
そこで、本発明はこの様な問題を解決するもので、その
目的とするところは、通常動作時の投写光源に対する適
正冷却とメインスイッチＯＦ Ｆ 後の急速冷却による
投写光源の再起動性向上とを両立した投写光源用冷却制
御装置を提供するところにある。The present invention is intended to solve these problems, and its purpose is to properly cool the projection light source during normal operation and to improve restartability of the projection light source by rapid cooling after the main switch is turned off. An object of the present invention is to provide a cooling control device for a projection light source that is compatible with the above.
［課題を解決するための手段］
本発明の投写型表示装置は、投写光源からの光をライト
バルブにより変調し投写レンズよりスクリーンに投影す
る表示装置であって、前記投写光源を冷却する為の冷却
器と冷却器制御装置及び投写光源温度検出手段とを具備
する事により、前記冷却器が上記投写光源ＯＦＦ後も、
通常０８時の冷却能力より能力上昇した状態て投写光源
温度検出手段からの信号により前記投写光源の温度上昇
に応じた時間内だけ冷却動作を継続するよう構成したこ
と−を特徴とする。[Means for Solving the Problems] A projection type display device of the present invention is a display device that modulates light from a projection light source using a light valve and projects it onto a screen from a projection lens, and includes a projection light source for cooling the projection light source. By including a cooler, a cooler control device, and a projection light source temperature detection means, the cooler can operate even after the projection light source is turned off.
The present invention is characterized in that the cooling operation is continued for a period of time corresponding to the temperature rise of the projection light source in response to a signal from the projection light source temperature detection means in a state where the cooling capacity is increased from the normal cooling capacity at 08:00.
［実施例］
第１図は本発明の一実施例を示した構成図である。
まず、ランプ１より出射した光はライトバルブ３により
光変調され画像情報を得た後、投写レンズ５を介してス
クリーン６に拡大投写される。[Embodiment] FIG. 1 is a block diagram showing an embodiment of the present invention.
First, the light emitted from the lamp 1 is modulated by the light valve 3 to obtain image information, and then is enlarged and projected onto the screen 6 via the projection lens 5.
ここで、ライトバルブ３は光変調機能を有していれば液
晶表示装置その他スライドフィルム等どんな素子でも構
わないと共に、ライトバルブコントローラ４はそれらの
ライトバルブの違いに対応した制御装置とする。 さ
て、上記動作に於て温度上昇したランプ１を電源ＯＦ
Ｆ ｉ＆素早く冷却し再起動に備えるため、ランプ電源
２よりの′ｔ！ｌ源ＯＦＦ ｆｉ号Ａ及び温度センサー
７からの温度上昇信号Ｂを受けて、冷却器制御装置８が
冷却ファン９に対し温度センサー７の検知温度が一定温
度に下がるまで冷却能力が上昇した状態で動作し続ける
ようコントロールを行う。Here, the light valve 3 may be any device such as a liquid crystal display or a slide film as long as it has a light modulation function, and the light valve controller 4 is a control device compatible with the differences in these light valves. Now, turn off the power to lamp 1, whose temperature has risen during the above operation.
F i &'t! from lamp power supply 2 to quickly cool down and prepare for restart! In response to the temperature rise signal B from the fi A and the temperature sensor 7, the cooler control device 8 controls the cooling fan 9 with the cooling capacity increased until the temperature detected by the temperature sensor 7 falls to a constant temperature. Control so that it continues to operate.
以下、動作のポイントである冷却器制御の具体的方法に
ついて第２図第３図を用いて詳細に説明する。Hereinafter, a specific method of controlling the cooler, which is the key point of operation, will be explained in detail using FIGS. 2, 3, and 3.
第２因は冷却器の能力上昇手段を複数個の冷却ファンに
より実現した実施例である。The second factor is the embodiment in which the means for increasing the capacity of the cooler is realized by a plurality of cooling fans.
まず、通常表示動作を終えた後メインスイッチ１０が切
られ主電源１０１からの電圧供給がランプ電！２に対し
断たれてランプ１が消灯すると同時に表示動作が停止す
る。このとき、ランプ電源２より電源ＯＦＦ信号Ａ及び
温度センサー７より温度上昇信号ＢがＮＯＲ論理ゲート
１２に入力され冷却増大信号ＣがＩＩ状態となり冷却器
（ＦＡＮ２）駆動トランジスター１９をＯＮさせ冷却器
（ＦＡＮ２）２１が動作を開始する。これと同時に冷却
増大信号Ｃはダイオード１４を介してリレー駆動トラン
ジスター１５もＯＮさせるため、通常表示状態同様リレ
ー１６はＯＮ状態を保つのでリレー接点１７及び１８も
接続状態を続ける結果、通常時冷却用の冷却器（ＦＡＮ
Ｉ）２０も冷却器（ＦＡＮ２）２１と一緒に動作し続は
冷却能力の増大が図られる。First, after the normal display operation is completed, the main switch 10 is turned off and the voltage supplied from the main power supply 101 is turned off. The display operation stops at the same time that the lamp 1 is turned off and the lamp 1 is turned off. At this time, the power OFF signal A from the lamp power supply 2 and the temperature rise signal B from the temperature sensor 7 are input to the NOR logic gate 12, and the cooling increase signal C becomes the II state, turning on the cooler (FAN 2) driving transistor 19 and turning on the cooler (FAN 2) drive transistor 19. FAN2) 21 starts operating. At the same time, the cooling increase signal C also turns on the relay drive transistor 15 via the diode 14, so the relay 16 remains on as in the normal display state, so the relay contacts 17 and 18 also remain connected, resulting in the normal cooling cooler (FAN)
I) 20 also operates together with the cooler (FAN2) 21, thereby increasing the cooling capacity.
そして、冷却効果により温度センサー７の検知温度が一
定温度（ランプ再起動可能温度）に下がった時、温度上
昇信号Ｂ！、ｔＨＩ論理となりＮＯＲ論理ゲート１２の
出力ＣがＬＯＷレベルに変化してリレー駆動トランジス
ター１５及び冷却器（ＦＡＮ２）駆動トランジスター１
９がＯＦＦ Ｌ全での電源が切れて表示装置が機能を停
止する。又、以上の動作中回路用電源１１の一次側入力
にリレー接点１８を並列接続して置くことによりメイン
スイッチ１０が○ＦＦＩ、た後も冷却器制御装置用の電
源が供給され本動作が成立することを付は加えて置く。Then, when the temperature detected by the temperature sensor 7 drops to a certain temperature (temperature at which the lamp can be restarted) due to the cooling effect, the temperature rise signal B! , the output C of the NOR logic gate 12 changes to LOW level, and the relay drive transistor 15 and cooler (FAN2) drive transistor 1 become tHI logic.
9 is OFF The power is turned off and the display device stops functioning. Furthermore, by connecting the relay contact 18 in parallel to the primary side input of the power supply 11 for the circuit during operation, the power for the cooler control device is supplied even after the main switch 10 is set to ○FFI, and the main operation is established. I'll add what I'll do.
第３図は冷却器の能力上昇手段を冷却器（ＦＡＮｌ）の
作動電流をコントロールすることにより実現した一実施
例である。FIG. 3 shows an embodiment in which the means for increasing the capacity of the cooler is realized by controlling the operating current of the cooler (FAN1).
まず、通常表示動作を糾えた後メインスイッチ１０が切
られ主電源１０１からの電圧供給がランプ電源２に対し
断たれてランプ１が消灯すると共に表示動作が停止する
。このとき、ランプ電ｎ２より電源ＯＦＦ信号Ａ及び温
度センサー７より温度上昇信号ＢがＮＯＲゲート１２に
入力され冷却増大信号ＣがＨＩ状態となりリレー駆動ト
ランジスター１５をダイオード１４を介してＯＮさせ続
ける。これと同時にトランジスター２３もＯＮさせ通常
表示状態で冷却器（ＦＡＮＩ）２０の作動電流りを制限
している抵抗２２を短絡して作動電流りを増加して冷却
器（ＦＡＮＩ）２０の冷却能力を上昇させるものである
。この時の抵抗２２゜トランジスター２３は電源回路に
置き換えて、通常時冷却用の冷却器（ＦＡＮＩ）２０の
供給電圧制御を行っても同様の動作が得られることを付
記して置く。First, after the normal display operation is completed, the main switch 10 is turned off, the voltage supply from the main power source 101 is cut off to the lamp power source 2, the lamp 1 is turned off, and the display operation is stopped. At this time, the power OFF signal A from the lamp electric n2 and the temperature increase signal B from the temperature sensor 7 are input to the NOR gate 12, and the cooling increase signal C becomes HI, keeping the relay drive transistor 15 ON via the diode 14. At the same time, the transistor 23 is also turned on to short-circuit the resistor 22 that limits the operating current of the cooler (FANI) 20 in the normal display state, increasing the operating current and increasing the cooling capacity of the cooler (FANI) 20. It is something that raises the level. It should be noted that the same operation can be obtained by replacing the resistor 22° transistor 23 with a power supply circuit and controlling the supply voltage of the cooler (FANI) 20 for normal cooling.
以下前例同様冷却能力の増大効果によりランプ温度が下
がって、温度センサー７の検知温度が一定温度（ランプ
再起動可能温度）に低下した時、温度上昇信号ＢはＨＩ
論理となりＮＯＲ論理ゲート１２の出力ＣがＬＯＷレベ
ルに変化してリレー駆動トランジスター１５及びトラン
ジスター２３が０ＦＦＬ表示装置の全ての機能が停止す
る。又、以上の動作中回路用電源１１の一次側入力にリ
レー接点１８を並列接続して置く事によりメインスイッ
チ１０がＯＦＦした後も冷却装置制御用の電源が供給さ
れ本動作が成立する。Below, as in the previous example, when the lamp temperature decreases due to the effect of increasing the cooling capacity and the temperature detected by the temperature sensor 7 decreases to a constant temperature (temperature at which the lamp can be restarted), the temperature increase signal B becomes HI.
The output C of the NOR logic gate 12 changes to the LOW level, and the relay driving transistor 15 and the transistor 23 become OFF. All functions of the display device stop. Furthermore, by connecting the relay contact 18 in parallel to the primary side input of the power supply 11 for the circuit during operation, the power for controlling the cooling device is supplied even after the main switch 10 is turned off, and the main operation is established.
ここて、第２図・第３図に冷却器として用いた冷却ファ
ンは他の半導体クーラーや液体を用いた冷媒装置など冷
却機能を満足する物であれば何でも構わない。さらに、
全ての構成をＣＰＵにより集中制御することてより簡単
に本発明を実現する事が可能であるが便宜上個別部品に
よる実施例にとどめる。Here, the cooling fan used as the cooler in FIGS. 2 and 3 may be any other device that satisfies the cooling function, such as another semiconductor cooler or a refrigerant device using liquid. moreover,
Although it is possible to realize the present invention more easily by centrally controlling all the configurations by a CPU, for convenience, this embodiment is limited to individual components.
［発明の効果］
本発明の投写型表示装置は、投写光源を冷却する冷却器
と冷却器制御装置及び投写光源温度検出手段とを具備し
、冷却器が投写光源ＯＦＦ後、通常ＯＮ時の冷却能力よ
り能力上昇した状態で前記投写光源の温度上昇に応じた
時間内だけ冷却動作を続けることにより、投写型表示装
置の停止後の再起動性とりわけメタルハライドランプや
キセノンランプなどの放電ランプを投写光源に用いた際
のランプの再起動性向上に優れた効果が得られる。[Effects of the Invention] The projection display device of the present invention includes a cooler that cools the projection light source, a cooler control device, and a projection light source temperature detection means, and the cooler cools the projection light source when it is normally turned on after it is turned off. By continuing the cooling operation for a period of time corresponding to the temperature rise of the projection light source in a state where the capacity is higher than that of the projection light source, the restartability of the projection display device after stopping is improved, especially for discharge lamps such as metal halide lamps and xenon lamps as the projection light source. An excellent effect can be obtained in improving the restartability of the lamp when used.
また、投写光源温度の過昇防止や通常表示状態に於ける
投写光源に対する適正冷却状態を確保し投写画像の色温
度の安定化と温度センサーによりランプ温度のフィード
バックを行う事で、投写光源ＯＦＦ？＆の冷却継続動作
を不要に長時間取る必要がなくなり騒音や電力消費の低
減が出来ると共に装置管理（使用後すぐに片づける事が
可能等）の面でも大きな効果を発揮するものであり、投
写型液晶表示装置を始めスライドや映写機またオーバー
ヘッドプロジェクタ−など幅広い装置への利用が可能で
ある。In addition, by preventing the projection light source temperature from rising too high, ensuring proper cooling of the projection light source in normal display conditions, stabilizing the color temperature of the projected image, and providing lamp temperature feedback using a temperature sensor, it is possible to turn off the projection light source. It eliminates the need for continuous cooling operation for an unnecessary long period of time, reduces noise and power consumption, and has great effects in terms of equipment management (such as being able to clean up immediately after use). It can be used in a wide range of devices, including type liquid crystal display devices, slides, movie projectors, and overhead projectors.
御の一実施例を示すブロック図。FIG. 2 is a block diagram showing one embodiment of the control.
１・・・ランプ ２・・・ランプ電源 ３・・・ライトバルブ ４・・・ライトバルブコントローラ ５・・・投写レンズ ６・・・スクリーン ７・・・温度センサー ８・・・冷却器制御装置 ９・・・冷却器 以上1...Lamp 2... Lamp power supply 3...Light bulb 4...Light valve controller 5...Projection lens 6...Screen 7...Temperature sensor 8...Cooler control device 9...Cooler that's all
第１図は、本発明の投写型表示装置の概略構成図。
第２図は、本発明の投写型表示装置の冷却器制御の一実
施例を示すブロック図。
第３図は、本発明の投写型表示装置の冷却器創出願人
セイコーエプソン株式会社FIG. 1 is a schematic configuration diagram of a projection type display device of the present invention. FIG. 2 is a block diagram showing an embodiment of cooler control of the projection display device of the present invention. Figure 3 shows the applicant for creating a cooler for a projection display device of the present invention.
Seiko Epson Corporation
Claims (1)
ズよりスクリーンに投影する表示装置であって、前記投
写光源を冷却する冷却器と冷却器制御装置及び投写光源
温度検出手段とを具備し、前記冷却器が上記投写光源Ｏ
ＦＦ後、通常ＯＮ時の冷却能力より能力上昇した状態で
上記投写光源の温度上昇に応じた時間内だけ冷却動作を
続けることを特徴とする投写型表示装置。A display device that modulates light from a projection light source by a light valve and projects it onto a screen from a projection lens, comprising a cooler for cooling the projection light source, a cooler control device, and a projection light source temperature detection means, The device is the projection light source O
A projection type display device characterized in that after FF, the cooling operation continues for a period of time corresponding to the temperature rise of the projection light source in a state where the cooling capacity is higher than that when the projection light source is normally turned on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2163502A JP2903655B2 (en) | 1990-06-21 | 1990-06-21 | Projection display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2163502A JP2903655B2 (en) | 1990-06-21 | 1990-06-21 | Projection display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0453943A true JPH0453943A (en) | 1992-02-21 |
| JP2903655B2 JP2903655B2 (en) | 1999-06-07 |
Family
ID=15775083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2163502A Expired - Lifetime JP2903655B2 (en) | 1990-06-21 | 1990-06-21 | Projection display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2903655B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0836368A2 (en) * | 1996-10-10 | 1998-04-15 | Osram Sylvania Inc. | Hot relight system for electrodeless high intensity discharge lamps |
| US6476560B2 (en) | 2000-04-25 | 2002-11-05 | Sanyo Electric Co., Ltd. | Liquid crystal projector |
| US6783244B1 (en) | 1999-09-22 | 2004-08-31 | Canon Kabushiki Kaisha | Display apparatus |
| GB2422683A (en) * | 2005-01-27 | 2006-08-02 | Dell Products Lp | Projector cooling fan and control system |
| US7086739B2 (en) | 2003-04-28 | 2006-08-08 | Mitsubishi Denki Kabushiki Kaisha | Projection display apparatus with capability of controlling whether to cool lamp depending on lamp temperature when restarting lamp |
| JP2007520984A (en) * | 2004-01-08 | 2007-07-26 | トムソン ライセンシング | Circuit device having power supply unit |
| JP2015022286A (en) * | 2013-07-23 | 2015-02-02 | 株式会社リコー | Image projection device, control method, and program |
-
1990
- 1990-06-21 JP JP2163502A patent/JP2903655B2/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0836368A3 (en) * | 1996-10-10 | 1999-06-30 | Osram Sylvania Inc. | Hot relight system for electrodeless high intensity discharge lamps |
| EP0836368A2 (en) * | 1996-10-10 | 1998-04-15 | Osram Sylvania Inc. | Hot relight system for electrodeless high intensity discharge lamps |
| US6783244B1 (en) | 1999-09-22 | 2004-08-31 | Canon Kabushiki Kaisha | Display apparatus |
| US6805452B2 (en) | 1999-09-22 | 2004-10-19 | Canon Kabushiki Kaisha | Display apparatus |
| US7044608B2 (en) | 1999-09-22 | 2006-05-16 | Canon Kabushiki Kaisha | Display apparatus |
| US6476560B2 (en) | 2000-04-25 | 2002-11-05 | Sanyo Electric Co., Ltd. | Liquid crystal projector |
| US7086739B2 (en) | 2003-04-28 | 2006-08-08 | Mitsubishi Denki Kabushiki Kaisha | Projection display apparatus with capability of controlling whether to cool lamp depending on lamp temperature when restarting lamp |
| JP2007520984A (en) * | 2004-01-08 | 2007-07-26 | トムソン ライセンシング | Circuit device having power supply unit |
| US7839015B2 (en) | 2004-01-08 | 2010-11-23 | Thomson Licensing | Circuit arrangement having a power supply unit |
| GB2422683A (en) * | 2005-01-27 | 2006-08-02 | Dell Products Lp | Projector cooling fan and control system |
| US7258446B2 (en) | 2005-01-27 | 2007-08-21 | Dell Products L.P. | System and method for intelligent information handling system projector cool down |
| KR100799803B1 (en) * | 2005-01-27 | 2008-01-31 | 델 프로덕트 엘 피 | System and Method for Intelligent Information Handling System Projector Cooling Down |
| GB2422683B (en) * | 2005-01-27 | 2008-12-17 | Dell Products Lp | System and method for intelligent information handling system projector cool down |
| AU2006200219B2 (en) * | 2005-01-27 | 2009-06-04 | Dell Products L.P. | System and Method for Intelligent Information Handling System Projector Cool Down |
| DE102006002685B4 (en) * | 2005-01-27 | 2011-02-03 | Dell Products L.P., Round Rock | System and method for intelligently cooling a projector in an information processing system |
| JP2015022286A (en) * | 2013-07-23 | 2015-02-02 | 株式会社リコー | Image projection device, control method, and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2903655B2 (en) | 1999-06-07 |
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