JP4966786B2 - Intake structure, projection display apparatus using the same, and electronic equipment - Google Patents
Intake structure, projection display apparatus using the same, and electronic equipment Download PDFInfo
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- JP4966786B2 JP4966786B2 JP2007217420A JP2007217420A JP4966786B2 JP 4966786 B2 JP4966786 B2 JP 4966786B2 JP 2007217420 A JP2007217420 A JP 2007217420A JP 2007217420 A JP2007217420 A JP 2007217420A JP 4966786 B2 JP4966786 B2 JP 4966786B2
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- 238000001816 cooling Methods 0.000 claims description 37
- 238000004891 communication Methods 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 14
- 230000003287 optical effect Effects 0.000 description 11
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
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- Projection Apparatus (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Description
本願発明は、吸気構造及びそれを用いた液晶プロジェクタ等の投写型映像表示装置並びに電子機器に係わり、特に冷却ファンの騒音対策に関するものである。 The present invention relates to an intake structure, a projection display apparatus such as a liquid crystal projector using the intake structure, and an electronic apparatus, and more particularly to noise countermeasures for a cooling fan.
液晶プロジェクタ等の投写型映像表示装置に限らず、各種の電子機器には、内部の発熱部品を冷却するための冷却ファンが必要であるが、冷却ファンの駆動音が装置使用時の騒音として問題になっている。 Not only projection video display devices such as liquid crystal projectors, but various electronic devices require a cooling fan to cool internal heat-generating components, but the driving sound of the cooling fan is a problem as noise when using the device. It has become.
冷却ファンの駆動音が装置外へ漏れる対策として、特許文献１には、回転駆動源の回転軸に軸支される羽根部材を有するファン本体、およびこのファン本体を収納する筐体を有するファンを備え、電子機器を構成する外装筐体内部に配置され、該電子機器内部を冷却する冷却装置であって、前記ファンを囲むように設けられ、前記ファンの回転音の外部への漏出を防止する遮音部材を備えていることを特徴とする冷却装置が提案されている。 As a countermeasure against leakage of cooling fan drive sound, Patent Document 1 discloses a fan body having a blade member supported by a rotation shaft of a rotation drive source, and a fan having a housing for housing the fan body. A cooling device that cools the inside of the electronic device and that is disposed inside the outer casing constituting the electronic device, and is provided so as to surround the fan, and prevents the rotation sound of the fan from leaking outside. A cooling device characterized by including a sound insulating member has been proposed.
しかし、上記のようにファン周囲に遮音部材を設けるという技術を適用しても、吸気口に関しては、冷却空気を吸入する必要があるため、遮音部材を設けることができず、吸気口からはファンの駆動音が直接漏れるという問題がある。 However, even if the technology of providing a sound insulating member around the fan as described above is applied, it is necessary to suck in the cooling air with respect to the intake port, so the sound insulating member cannot be provided. There is a problem that the drive sound of the leak directly.
このような問題を解決するため、特許文献２には、電子機器を収納する内部ケース、および、この内部ケースを収納する外装ケースを有し、内部ケースおよび外装ケースのそれぞれに吸気口を設けるとともに、吸気口が設けられているところの内部ケースと外装ケースの間隔を広くして吸気チャンバを形成し、さらに内部ケースの吸気口と外装ケースの吸気口を吸気流路が直線にならないようにずらせて設けたものが提案されている。
しかしながら、上記特許文献２のように吸気口をずらせるだけでは、フィルタのスペース以外に内部ケースと外装ケース間に吸気流路を確保しなければならないで、その分、装置が大型化してしまう。 However, just shifting the intake port as in the above-mentioned Patent Document 2 requires an intake flow path between the inner case and the outer case in addition to the filter space, which increases the size of the apparatus.
そこで、本願発明はこのような課題を解決するためになされたものであり、吸気口から冷却ファンの駆動音が漏れるのを抑制することができると共に、そのためのスペースが少なくて済む吸気構造及びそれを用いた投写型映像表示装置並びに電子機器を提供することを目的とするものである。 Accordingly, the present invention has been made to solve such a problem, and it is possible to suppress the drive sound of the cooling fan from leaking from the intake port, and to reduce the space for the intake structure and the intake structure. It is an object of the present invention to provide a projection display apparatus and an electronic device using the above.
上記のような目的を達成するために、本願発明の請求項１に係る吸気構造は、冷却ファンを収納する本体ケースの外壁には、冷却ファンと同じ高さ位置に対応させて吸気口を形成し、本体ケースの内壁には、前記冷却ファンと外壁の吸気口との一直線上の連通を遮蔽
する遮蔽部を形成すると共に、前記冷却ファンと外壁の吸気口とを湾曲させて連通させる吸気口を外壁の吸気口より上側に形成し、前記外壁と内壁間には、フィルタ濾材が襞折りされて成るプリーツ型フィルタをその折り溝が前記外壁の吸気口と内壁の吸気口間を繋ぐ方向と平行になるように形成して配置し、前記外壁としてフィルタ着脱用の開閉部材を備える一方、前記内壁として前記冷却ファンの吸入側ダクトの吸気口に着脱可能に装着されて電磁波を遮蔽するシールド部材を備え、前記吸入側ダクトの吸気口に前記シールド部材を装着してから前記プリーツ型フィルタを装着すると共に、前記プリーツ型フィルタと前記開閉部材の少なくとも一方に、前記開閉部材を閉じたときに前記プリーツ型フィルタを前記シールド部材を介して前記吸入側ダクトの吸気口に弾性的に押さえ付ける弾性係合部材を備えたことを特徴とするものである。
In order to achieve the above-described object, the intake structure according to claim 1 of the present invention is formed with an intake port on the outer wall of the main body case housing the cooling fan so as to correspond to the same height position as the cooling fan. An air inlet that forms a shielding part that shields the communication between the cooling fan and the air inlet on the outer wall on the inner wall of the main body case, and that allows the cooling fan and the air inlet on the outer wall to be curved and communicate with each other. The pleated filter is formed by folding the filter medium between the outer wall and the inner wall, and the fold groove connects between the inlet of the outer wall and the inlet of the inner wall. A shield part that is formed and arranged so as to be parallel and includes an opening / closing member for attaching / detaching a filter as the outer wall, and is detachably attached as an inner wall to the inlet of the inlet duct of the cooling fan to shield electromagnetic waves. The pleated filter is mounted after the shield member is mounted on the intake port of the suction duct, and when the open / close member is closed to at least one of the pleated filter and the open / close member, An elastic engagement member that elastically presses the pleated filter against the intake port of the intake duct through the shield member is provided.
請求項２に係る吸気構造は、請求項１記載の吸気構造において、前記弾性係合部材は、前記フィルタの枠体の両端側に形成された弾性片と、当該弾性片に対応して前記開閉部材の両側に前記弾性片に向かって突出した状態に形成された押さえ突起とから成ることを特徴とするものである。 The air intake structure according to claim 2 is the air intake structure according to claim 1, wherein the elastic engagement member includes elastic pieces formed on both ends of the frame of the filter, and the opening and closing corresponding to the elastic pieces. It consists of pressing projections formed on both sides of the member so as to protrude toward the elastic piece.
請求項３に係る投写型映像表示装置は、請求項１または請求項２記載の吸気構造を備えて発熱部品を冷却すると共に、光源ランプから照射された光を映像信号に基づき変調し、変調された映像光を拡大投写することを特徴とするものである。 According to a third aspect of the present invention, there is provided a projection display apparatus comprising the intake structure according to the first or second aspect, wherein the heat generating component is cooled, and the light emitted from the light source lamp is modulated based on the video signal. The projected image light is enlarged and projected.
請求項４に係る電子機器は、請求項１または請求項２記載の吸気構造を備えて発熱部品を冷却することを特徴とするものである。 According to a fourth aspect of the present invention, there is provided an electronic apparatus comprising the intake structure according to the first or second aspect, wherein the heat generating component is cooled.
本願発明の請求項１記載の吸気構造によれば、吸気口をずらして形成した外壁と内壁間に、プリーツ型フィルタをその折り溝が外壁の吸気口と内壁の吸気口間を繋ぐ方向と平行になるように形成して配置したことにより、プリーツ型フィルタの折り溝が吸気流路となって別途吸気流路のスペースを確保する必要がないので、吸気口から冷却ファンの駆動音が漏れるのを抑制することができると共に、フィルタの厚み分のスペースで済んで大型化を防ぐことができる。さらに、フィルタとフィルタ着脱用の開閉部材の少なくとも一方に、開閉部材を閉じたときにフィルタをシールド部材を介して冷却ファンの吸入側ダクトの吸気口に弾性的に押さえ付ける弾性係合部材を備えたことにより、吸気口とシールド部材とフィルタを密着させることができるので、吸気口とフィルタの間にシールド部材を配置してもフィルタ性能を向上することができる。 According to the intake structure of the first aspect of the present invention, a pleated filter is formed between the outer wall and the inner wall formed by shifting the inlet, and the fold groove is parallel to the direction connecting the inlet of the outer wall and the inlet of the inner wall. Since the pleated filter fold groove becomes an intake flow path and there is no need to secure a separate intake flow path space, the cooling fan drive sound leaks from the intake port. In addition, the space for the thickness of the filter is sufficient, and an increase in size can be prevented. Further, at least one of the filter and the opening / closing member for attaching / detaching the filter is provided with an elastic engagement member that elastically presses the filter against the intake port of the suction side duct of the cooling fan via the shield member when the opening / closing member is closed. As a result, the air inlet, the shield member, and the filter can be brought into close contact with each other, so that the filter performance can be improved even if the shield member is disposed between the air inlet and the filter.
請求項２記載の吸気構造によれば、弾性係合部材は、フィルタの枠体の両端側に形成された弾性片と、当該弾性片に対応して開閉部材の両側に前記弾性片に向かって突出した状態に形成された押さえ突起とから成るものであるから、比較簡単な構成で安価にフィルタ性能を向上することができる。 According to the intake structure of the second aspect, the elastic engagement member is formed on the both ends of the filter frame and on the both sides of the opening / closing member corresponding to the elastic piece toward the elastic piece. Since it consists of the pressing protrusion formed in the protruding state, the filter performance can be improved at a low cost with a comparatively simple configuration.
請求項３記載の投写型映像表示装置によれば、上記のような吸気構造を採用したことにより、吸気口から冷却ファンの駆動音が漏れるのを抑制することができると共に、フィルタの厚み分のスペースで済むので、より静かな環境で映像を鑑賞できると共に、装置が大型化するのを防ぐことができて、特に有効である。 According to the projection type image display apparatus of the third aspect, by adopting the intake structure as described above, it is possible to suppress the drive sound of the cooling fan from leaking from the intake port, and to the thickness of the filter. Since space is sufficient, it is possible to view images in a quieter environment and to prevent the apparatus from becoming large, which is particularly effective.
請求項７記載の電子機器によれば、上記のような吸気構造を採用することにより、吸気口から冷却ファンの駆動音が漏れるのを抑制することができると共に、フィルタの厚み分のスペースで済むので機器の大型化を防ぐことができて有効である。 According to the electronic apparatus of the seventh aspect, by adopting the intake structure as described above, it is possible to suppress the drive sound of the cooling fan from leaking from the intake port, and the space for the thickness of the filter is sufficient. Therefore, it is effective in preventing an increase in the size of the device.
以下、本願発明の実施形態を図面を参照して詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
図１〜図３は、本願発明の一実施形態である液晶プロジェクタの全体構成を示す斜視図で、図１は背面側斜め上方から見た外観斜視図、図２は同じくその上ケースや制御基板等を取り外して見た斜視図、図３は同じくその光学系を取り外して見た斜視図である。 1 to 3 are perspective views showing an overall configuration of a liquid crystal projector according to an embodiment of the present invention. FIG. 1 is an external perspective view seen from the rear side obliquely upward, and FIG. 2 is an upper case and a control board. FIG. 3 is a perspective view of the optical system with the optical system removed.
図１に示すように、この液晶プロジェクタ１の外郭を成す本体ケース２は、やや横長の箱形形状を成し、上ケース２ａの上面中央部には、操作表示部３が設けられている。 As shown in FIG. 1, a main body case 2 constituting the outline of the liquid crystal projector 1 has a slightly horizontally long box shape, and an operation display section 3 is provided at the center of the upper surface of the upper case 2a.
また、背面側の左下側には冷却用の吸気口４が形成され、その上方には、映像や音声等の各種入出力ケーブルを接続するための入出力端子群などを露出させたＡＶパネル５が設けられている。上記吸気口４は、スリット状の多数の通気孔が開閉可能な蓋（開閉部材）６に形成されて成り、この開閉蓋６を開けることにより後述するフィルタが着脱可能になっている。 In addition, an air inlet 4 for cooling is formed in the lower left side on the back side, and an AV panel 5 in which an input / output terminal group for connecting various input / output cables such as video and audio is exposed above. Is provided. The intake port 4 is formed by a lid (opening / closing member) 6 in which a large number of slit-shaped vents can be opened and closed. By opening the opening / closing lid 6, a filter to be described later can be attached and detached.
一方、背面側から見て右側面には、スリット状の多数の通気孔から成る排気口７が上ケース２ａから下ケース２ｂにわたって形成されている。 On the other hand, on the right side when viewed from the back side, an exhaust port 7 composed of a large number of slit-like vent holes is formed from the upper case 2a to the lower case 2b.
また、図２に示すように、前面側には投写レンズ８が露出している。本体ケース２（下ケース２ｂ）の内部には、前方から見て左側奥部に光源ランプユニット９が配置されていると共に、この光源ランプユニット９から前記投写レンズ３に至る光学系１０が略Ｌ字状に配置されている。 As shown in FIG. 2, the projection lens 8 is exposed on the front side. Inside the main body case 2 (lower case 2b), a light source lamp unit 9 is disposed at the left back when viewed from the front, and an optical system 10 extending from the light source lamp unit 9 to the projection lens 3 is substantially L. It is arranged in a letter shape.
上記投写レンズ８の排気口７側には電源ユニット１１が配置されている。この電源ユニット１１と排気口７間には、排気ファンとして電源周り冷却用の軸流ファン（プロペラファン）１２が内蔵されている。また、排気ファンとしては、上記軸流ファン１２と並設されると共に光源ランプユニット９に隣接してランプ周り冷却用の軸流ファン（プロペラファン）１３が内蔵されている。さらに、光源ランプユニット９は、超高圧水銀ランプ等から成ってかなりの高温になるので、別途ランプ冷却専用の遠心ファン（シロッコファン）１４が備えられている。 A power supply unit 11 is disposed on the exhaust port 7 side of the projection lens 8. Between the power supply unit 11 and the exhaust port 7, an axial fan (propeller fan) 12 for cooling around the power supply is incorporated as an exhaust fan. Further, as the exhaust fan, an axial fan (propeller fan) 13 for cooling around the lamp is built in parallel with the axial fan 12 and adjacent to the light source lamp unit 9. Further, the light source lamp unit 9 is composed of an ultra-high pressure mercury lamp or the like and has a considerably high temperature. Therefore, a centrifugal fan (sirocco fan) 14 dedicated to lamp cooling is separately provided.
一方、図３に示すように、吸気口４の内側には、ＲＧＢ（赤色，緑色，青色）各色毎の液晶パネルと偏光板や偏光ビームスプリッタ等を冷却するための吸気ファンとして２台の遠心ファン（シロッコファン）１５，１５が内蔵されており、これらの遠心ファン１５からの冷却風が吐出側ダクト１６を介して吹出口１７から液晶パネルと偏光板や偏光ビームスプリッタ等の光学部品に送風されて、これらが冷却されるようになっている。 On the other hand, as shown in FIG. 3, inside the air inlet 4 are two centrifuges serving as air intake fans for cooling liquid crystal panels for each color of RGB (red, green, blue) and polarizing plates, polarizing beam splitters, and the like. Fans (sirocco fans) 15 and 15 are built in, and cooling air from these centrifugal fans 15 is blown from a blowout port 17 to an optical component such as a liquid crystal panel and a polarizing plate or a polarizing beam splitter through a discharge side duct 16. These are designed to be cooled.
図４，図５は本実施形態の吸気構造を示す図で、図４（ａ）は吸気口部分の分解斜視図、図４（ｂ）は開閉蓋とフィルタの関係を裏側から見た斜視図、図５は吸気口部分の要部縦断面図である。 4 and 5 are views showing the intake structure of the present embodiment, FIG. 4 (a) is an exploded perspective view of the intake port portion, and FIG. 4 (b) is a perspective view of the relationship between the opening / closing lid and the filter as seen from the back side. FIG. 5 is a longitudinal sectional view of the main part of the intake port portion.
本実施形態においては、前述した遠心ファン１５における吸入側ダクト１８の吸気口１９にフィルタ着脱用の開閉蓋６を有しており、電磁波を遮蔽するシールド部材２０をフィルタ２１と開閉蓋６の間に挿入すると、フィルタ着脱の際に邪魔になるうえ、吸気口１９周りの他のシールド部材と接触を保つことが困難になるため、吸気口１９にシールド部材２０を装着してからフィルタ２１を装着するようになっている。 In the present embodiment, the opening / closing lid 6 for attaching / detaching the filter is provided at the intake port 19 of the suction side duct 18 in the centrifugal fan 15 described above, and the shield member 20 for shielding electromagnetic waves is provided between the filter 21 and the opening / closing lid 6. If it is inserted into the filter, it will be in the way when the filter is attached and detached, and it will be difficult to maintain contact with other shield members around the intake port 19, so the filter 21 is mounted after the shield member 20 is mounted on the intake port 19. It is supposed to be.
外壁となる開閉蓋６と内壁となるシールド部材２０のそれぞれには、図５に示すように、吸気口１９の内側に配置されている遠心ファン１５と一直線上に配置されないように、多数の通気孔から成る吸気口４，２２がずらして形成されている。具体的には、開閉蓋６の吸気口４とシールド部材２０の吸気口２２を上下にずらして、シールド部材２０の吸気口２２が上側で、開閉蓋６の吸気口４が下側に位置するように形成されている。これにより、遠心ファン１５から発せられて吸入側ダクト１８の吸気口１９から漏れ出ようとする駆動音は、破線の矢印で示すように、シールド部材２０又は開閉蓋６の吸気口非形成部分で遮断されるので、開閉蓋６の吸気口４から装置外へ駆動音が直接漏れるのを防ぐことができる。 As shown in FIG. 5, each of the opening / closing lid 6 serving as the outer wall and the shield member 20 serving as the inner wall has a large number of passages so as not to be aligned with the centrifugal fan 15 disposed inside the air inlet 19. The intake ports 4 and 22 made of pores are formed in a shifted manner. Specifically, the intake port 4 of the open / close lid 6 and the intake port 22 of the shield member 20 are shifted up and down so that the intake port 22 of the shield member 20 is located on the upper side and the intake port 4 of the open / close lid 6 is located on the lower side. It is formed as follows. As a result, the drive sound that is emitted from the centrifugal fan 15 and leaks out from the intake port 19 of the suction side duct 18 is generated at the shield member 20 or the portion of the opening / closing lid 6 where the intake port is not formed, as indicated by the broken arrow. Since it is blocked, it is possible to prevent the drive sound from leaking directly from the air inlet 4 of the opening / closing lid 6 to the outside of the apparatus.
さらに、開閉蓋６とシールド部材２０間には、フィルタ濾材２３が襞折りされて成るプリーツ型フィルタ２１をその折り溝が開閉蓋６の吸気口４とシールド部材２０の吸気口２２間を繋ぐ方向と平行，すなわち本実施形態では上下方向になるように形成して配置されるようになっている。 Further, between the opening / closing lid 6 and the shield member 20, the pleated filter 21 formed by folding the filter medium 23 is connected in a direction in which the folding groove connects between the inlet 4 of the opening / closing lid 6 and the inlet 22 of the shield member 20. In this embodiment, it is formed and arranged so as to be in the vertical direction.
なお、本実施形態においては、プリーツ型フィルタ２１の折り溝が上下方向を向くようにしたが、開閉蓋６の吸気口４とシールド部材２０の吸気口２２を左右方向（横方向）にずらして形成する場合は、プリーツ型フィルタ２１の折り溝も左右方向を向くようにする必要がある。 In the present embodiment, the folding groove of the pleated filter 21 is directed in the vertical direction, but the intake port 4 of the opening / closing lid 6 and the intake port 22 of the shield member 20 are shifted in the left-right direction (lateral direction). In the case of forming, the folding groove of the pleated filter 21 also needs to be directed in the left-right direction.
また、図４に示すように、フィルタ濾材（図示せず）が襞折りされて成るプリーツ型フィルタ２１の枠体２４の両端側面には、開閉蓋６方向に向かって延びると共に先端側がやや外側に向けられた弾性片２５が形成されている。一方、上記弾性片２５に対応した開閉蓋６の内面両側には、弾性片２５に向かって突出した状態に形成された押さえ突起２６が形成されており、開閉蓋６を閉じたときに押さえ突起２６がフィルタ枠体２４の弾性片２５の内側に係合摺接して、フィルタ２１をシールド部材２０を介して吸気口１９に弾性的に押さえ付けるように構成されている。 Further, as shown in FIG. 4, both side surfaces of the frame body 24 of the pleated filter 21 formed by folding a filter medium (not shown) are extended toward the opening / closing lid 6 and the front end side is slightly outward. A directed elastic piece 25 is formed. On the other hand, on both sides of the inner surface of the opening / closing lid 6 corresponding to the elastic piece 25, pressing protrusions 26 formed so as to protrude toward the elastic piece 25 are formed. When the opening / closing lid 6 is closed, the pressing protrusion 26 is formed. 26 is configured to engage and slidably contact the inner side of the elastic piece 25 of the filter frame body 24 so as to elastically press the filter 21 against the intake port 19 via the shield member 20.
なお、本実施形態においては、上述したようにフィルタ２１の枠体２４側に弾性片２５を形成し、開閉蓋６側に押さえ突起２６を形成したが、逆にフィルタ２１の枠体２４側に突起を形成し、開閉蓋６側に弾性部材を形成しても良い。さらには、フィルタ２１の枠体２４と開閉蓋６のいずれか一方のみに他方に弾性的に当接する弾性部材を設けても良い。要は、フィルタ２１と開閉蓋６の少なくとも一方に、開閉蓋６を閉じたときにフィルタ２１をシールド部材２０を介して吸気口１９に弾性的に押さえ付ける弾性係合部材を備えれば良い。 In the present embodiment, as described above, the elastic piece 25 is formed on the frame 24 side of the filter 21 and the pressing projection 26 is formed on the opening / closing lid 6 side, but conversely on the frame 24 side of the filter 21. A protrusion may be formed, and an elastic member may be formed on the opening / closing lid 6 side. Furthermore, an elastic member that elastically abuts on the other may be provided on only one of the frame body 24 and the opening / closing lid 6 of the filter 21. In short, at least one of the filter 21 and the opening / closing lid 6 may be provided with an elastic engagement member that elastically presses the filter 21 against the intake port 19 via the shield member 20 when the opening / closing lid 6 is closed.
図６（ａ）は、本実施形態の冷却ファン取付構造の要部を示す斜視図、図６（ｂ）はその要部縦断面図である。 FIG. 6A is a perspective view showing a main part of the cooling fan mounting structure of the present embodiment, and FIG. 6B is a vertical sectional view of the main part.
本実施形態においては、上述した吸気口１９の内側に配置される冷却ファンとしての遠心ファン１５が、本体ケース２の下ケース２ｂを遠心ファン支持部材２７とし、遠心ファン１５の吸入口１５ａ側のダクト（吸入側ダクト）１８を遠心ファンカバー部材２８とした取付部２９に取り付けられている。 In the present embodiment, the centrifugal fan 15 as a cooling fan disposed inside the intake port 19 described above uses the lower case 2b of the main body case 2 as the centrifugal fan support member 27, and the centrifugal fan 15 on the suction port 15a side. A duct (suction side duct) 18 is attached to an attachment portion 29 which is a centrifugal fan cover member 28.
上記遠心ファン１５は、そのケーシング１５ｂの外周面に突設された一対の位置決め固定部１５ｃ，１５ｃが、これらに対応して遠心ファン支持部材２７から突設された位置決め固定部２７ｃ，２７ｃにネジ等により固定されて上記取付部２９に位置決め固定されるようになっている。 The centrifugal fan 15 has a pair of positioning and fixing portions 15c and 15c projecting from the outer peripheral surface of the casing 15b, and screws corresponding to the positioning and fixing portions 27c and 27c projecting from the centrifugal fan support member 27 corresponding thereto. It is fixed by the above or the like, and is positioned and fixed to the mounting portion 29.
そして、下方の遠心ファン支持部材２７と上方の遠心ファンカバー部材２８の双方から遠心ファン１５に向けて、その位置決め固定部１５ｃよりも遠心ファン１５の羽根側で、遠心ファン１５の中心部に対して対称にそれぞれ一対の支持突起２７ａ，２８ａが突設されている。また、下側と上側の支持突起２７ａ，２８ａはそれぞれ同軸上に配置されている。本実施形態では、遠心ファン１５のケーシング１５ｂのうち大きな強度が得られる外周縁に対応して上記支持突起２７ａ，２８ａを形成している。 Then, from both the lower centrifugal fan support member 27 and the upper centrifugal fan cover member 28 toward the centrifugal fan 15, with respect to the central portion of the centrifugal fan 15 on the blade side of the centrifugal fan 15 with respect to the positioning fixing portion 15 c. A pair of support protrusions 27a and 28a are provided in a symmetrical manner. Further, the lower and upper support protrusions 27a and 28a are arranged coaxially. In the present embodiment, the support protrusions 27a and 28a are formed corresponding to the outer peripheral edge of the casing 15b of the centrifugal fan 15 where a high strength can be obtained.
さらに、上記各支持突起２７ａ，２８ａの先端面には、合成ゴム等から成るリング状の弾性部材３０が接着剤等により貼り付けられるようになっている。すなわち、遠心ファン１５は、先端面に弾性部材３０が貼り付けられた上下の支持突起２８ａ，２７ａで挟み込まれるようにして弾性的に支持されるように構成されている。 Further, a ring-shaped elastic member 30 made of synthetic rubber or the like is attached to the front end surfaces of the support protrusions 27a and 28a with an adhesive or the like. That is, the centrifugal fan 15 is configured to be elastically supported so as to be sandwiched between the upper and lower support protrusions 28a and 27a having the elastic member 30 attached to the front end surface.
なお、図６では、吸気口１９の内側に配置される２台の遠心ファン１５，１５の一方のみを示したが、他方も同様に構成されている。 In FIG. 6, only one of the two centrifugal fans 15 and 15 disposed inside the air inlet 19 is shown, but the other is configured in the same manner.
本実施形態の液晶プロジェクタ１は以上のように構成されて、図２に示した光源ランプユニット９から照射された光を光学系１０を介してＲＧＢの３色に分離すると共に、各色毎の液晶パネルで映像信号に基づき変調し、変調された映像光を合成して、投写レンズ８を介してスクリーン上に拡大投写するようになっている。 The liquid crystal projector 1 according to the present embodiment is configured as described above, and separates the light emitted from the light source lamp unit 9 shown in FIG. 2 into three colors of RGB via the optical system 10 and the liquid crystal for each color. The light is modulated by the panel based on the video signal, and the modulated video light is synthesized and enlarged and projected onto the screen via the projection lens 8.
上記光学系１０を構成する各色毎の液晶パネルと偏光板や偏光ビームスプリッタ等の光学部品は、図３に示したように吸気口４の内側に内蔵された２台の遠心ファン１５，１５からの冷却風が吐出側ダクト１６を介して、上記光学部品の下側に形成された吹出口１７から吹き付けられて冷却される。 The liquid crystal panel for each color and the optical components such as the polarizing plate and the polarization beam splitter constituting the optical system 10 are provided from two centrifugal fans 15 and 15 built inside the air inlet 4 as shown in FIG. The cooling air is blown from the outlet 17 formed on the lower side of the optical component through the discharge side duct 16 and cooled.
また、光源ランプユニット９は、図２に示したランプ冷却専用の遠心ファン１４からの吐出風が吹き付けれて冷却されると共に、温度が上昇したランプ周りの空気が軸流ファン１３により吸い込まれて排気口７から装置外に排出されることにより冷却される。 Further, the light source lamp unit 9 is cooled by being blown by the discharge air from the centrifugal fan 14 dedicated to cooling the lamp shown in FIG. 2, and the air around the lamp whose temperature has risen is sucked by the axial fan 13. It is cooled by being discharged out of the apparatus from the exhaust port 7.
一方、電源ユニット１１は、温度が上昇した内部や周囲の空気が軸流ファン１２により吸い込まれて排気口７から装置外に排出されると共に、当該軸流ファン１２の吸引によって電源ユニット１１の内部や外表面に生じる空気流によって冷却される。 On the other hand, in the power supply unit 11, the temperature inside and surrounding air is sucked in by the axial fan 12 and discharged from the exhaust port 7 to the outside of the apparatus. Or cooled by the air flow generated on the outer surface.
また、本実施形態の吸気構造によれば、フィルタ２１と開閉蓋６の少なくとも一方に、開閉蓋６を閉じたときにフィルタ２１をシールド部材２０を介して吸気口１９に弾性的に押さえ付ける弾性係合部材を備えたことにより、吸気口１９とシールド部材２０とフィルタ２１を密着させることができるので、吸気口１９とフィルタ２１の間にシールド部材２０を配置してもフィルタ性能を向上することができる。 Further, according to the intake structure of the present embodiment, at least one of the filter 21 and the opening / closing lid 6 is elastically pressed against the intake port 19 via the shield member 20 when the opening / closing lid 6 is closed. By providing the engaging member, the air inlet 19, the shield member 20 and the filter 21 can be brought into close contact with each other, so that the filter performance can be improved even if the shield member 20 is disposed between the air inlet 19 and the filter 21. Can do.
さらに、上記弾性係合部材を、フィルタ２１の枠体２４の両端側面に形成された弾性片２５と、当該弾性片２５に対応した開閉蓋６の内面両側に弾性片２５に向かって突出した状態に形成された押さえ突起２６とから構成したことにより、比較簡単な構成で安価にフィルタ性能を向上することができる。 Further, the elastic engagement member protrudes toward the elastic piece 25 on both sides of the inner surface of the opening / closing lid 6 corresponding to the elastic piece 25 and the elastic piece 25 formed on both side surfaces of the frame body 24 of the filter 21. The filter performance can be improved at a low cost with a comparatively simple configuration.
また、吸気口４，２２をずらして形成した開閉蓋６とシールド部材２０間に、プリーツ型フィルタ２１をその折り溝が開閉蓋６の吸気口４とシールド部材２０の吸気口２２間を繋ぐ方向と平行になるように形成して配置したことにより、プリーツ型フィルタ２１の折り溝が吸気流路となって別途吸気流路のスペースを確保する必要がないので、吸気口４から遠心ファン１５の駆動音が装置外へ直接漏れるのを防ぐことができると共に、フィルタ２１の厚み分のスペースだけで済んで、装置が大型化するのを防ぐことができる。 Further, the pleated filter 21 is connected between the opening / closing lid 6 formed by shifting the intake ports 4 and 22 and the shield member 20, and the folding groove connects the intake port 4 of the opening / closing lid 6 and the intake port 22 of the shield member 20. Since the folding groove of the pleated filter 21 serves as an intake passage and it is not necessary to secure a separate space for the intake passage, the centrifugal fan 15 can be The drive sound can be prevented from leaking directly to the outside of the apparatus, and only the space for the thickness of the filter 21 can be used, and the apparatus can be prevented from being enlarged.
さらに、開閉蓋６の吸気口４とシールド部材２０の吸気口２２を上下にずらして、シールド部材２０の吸気口２２が上側で開閉蓋６の吸気口４が下側に位置するように形成したことにより、吸気口４から遠心ファン１５の駆動音が僅かに漏れても、漏れた駆動音は下方に向かうので、一般的な床設置形態での利用者への影響が特に少なくなる。 Further, the intake port 4 of the open / close lid 6 and the intake port 22 of the shield member 20 are shifted up and down so that the intake port 22 of the shield member 20 is located on the upper side and the intake port 4 of the open / close lid 6 is located on the lower side. As a result, even if the drive sound of the centrifugal fan 15 leaks slightly from the air inlet 4, the leaked drive sound is directed downward, so that the influence on the user in a general floor installation form is particularly reduced.
そして、本実施形態の液晶プロジェクタ１のような投写型映像表示装置に上記のような吸気構造を採用したことにより、吸気口４から遠心ファン１５の駆動音が漏れるのを抑制することができると共に、フィルタ２１の厚み分のスペースで済むので、より静かな環境で映像を鑑賞できると共に、装置が大型化するのを防ぐことができ、また、塵埃の侵入を最も嫌う光学系を有しているので、フィルタ性能を向上することができて、特に有効である。 In addition, by adopting the intake structure as described above in the projection display apparatus such as the liquid crystal projector 1 of the present embodiment, it is possible to suppress the drive sound of the centrifugal fan 15 from leaking from the intake port 4. Since the space for the thickness of the filter 21 is sufficient, an image can be viewed in a quieter environment, the apparatus can be prevented from increasing in size, and an optical system that is most resistant to dust intrusion is provided. Therefore, the filter performance can be improved and is particularly effective.
また、従来よりファン外周を覆うような防振ファンカバーはあるが、このような防振ファンカバーでは外周側に吐出口がない軸流ファンでも特殊な形状の弾性部材が必要でコスト高となる。これに対して、本実施形態の冷却ファン（遠心ファン）取付構造によれば、支持突起２７ａ，２８ａの先端面に貼り付ける簡単な弾性部材３０で済むので、特殊な形状の弾性部材を必要とせずに、遠心ファン１５の振動が本体ケース２へ伝播して騒音となるのを抑制する構造を安価に実現できる。さらに、遠心ファン１５の固定部１５ｃ以外で、固定部１５ｃよりも大きな振動が発生する羽根側を弾性部材３０を介して支持することで、固定部１５ｃに弾性部材を備えるよりも大きな制振効果を得ることができる。 Further, there is a conventional anti-vibration fan cover that covers the outer periphery of the fan. However, such an anti-vibration fan cover requires a specially shaped elastic member even for an axial fan that does not have a discharge port on the outer peripheral side, resulting in high costs. . On the other hand, according to the cooling fan (centrifugal fan) mounting structure of the present embodiment, a simple elastic member 30 to be attached to the front end surfaces of the support protrusions 27a and 28a is sufficient, so that an elastic member having a special shape is required. In addition, a structure that suppresses the vibration of the centrifugal fan 15 from propagating to the main body case 2 and becoming noise can be realized at low cost. Further, by supporting the blade side where vibration larger than that of the fixed portion 15c is generated via the elastic member 30 other than the fixed portion 15c of the centrifugal fan 15, a greater vibration damping effect than when the fixed portion 15c is provided with an elastic member. Can be obtained.
また、ファン外周を覆う従来の防振ファンカバーを本実施形態のように外周側に吐出口がある遠心ファン１５に適用する場合には、軸流ファンと比べてさらに複雑な形状が必要になるので、より効果的である。 In addition, when a conventional anti-vibration fan cover covering the outer periphery of the fan is applied to the centrifugal fan 15 having a discharge port on the outer peripheral side as in the present embodiment, a more complicated shape is required as compared with the axial fan. So it is more effective.
また、各支持突起２７ａ，２７ａ及び２８ａ，２８ａは遠心ファン１５の中心部に対して対称に配置されているので、安定した状態で支持しながら大きな制振効果を得ることができる。 Moreover, since each support protrusion 27a, 27a and 28a, 28a is arrange | positioned symmetrically with respect to the center part of the centrifugal fan 15, a big damping effect can be acquired, supporting in the stable state.
さらに、下側と上側の支持突起２７ａ，２８ａは同軸上に配置されているので、両面側から安定した状態で支持しながら大きな制振効果を得ることができる。 Furthermore, since the lower and upper support protrusions 27a and 28a are arranged on the same axis, it is possible to obtain a great vibration damping effect while supporting them stably from both sides.
また、遠心ファンカバー部材２８に遠心ファン１５の吸入側ダクト１８を用いたことにより、吸入側ダクト１８を有効利用して安価に実現できる。 Further, by using the suction side duct 18 of the centrifugal fan 15 for the centrifugal fan cover member 28, the suction side duct 18 can be effectively used and realized at low cost.
さらに、遠心ファン支持部材２７に遠心ファン１５が収納される本体ケース２の下ケース２ｂを用いたことにより、本体ケース２の下ケース２ｂを有効利用して安価に実現できる。 Furthermore, by using the lower case 2b of the main body case 2 in which the centrifugal fan 15 is housed in the centrifugal fan support member 27, the lower case 2b of the main body case 2 can be effectively used and realized at low cost.
また、本実施形態の液晶プロジェクタ１のような投写型映像表示装置に上記のような冷却ファン（遠心ファン）取付構造を採用したことにより、遠心ファン１５の振動が本体ケース２に伝播して騒音が大きくなるのを安価に且つ効果的に防ぐことができるので、より静かな環境で映像を鑑賞できて、特に有効である。 Further, by adopting the cooling fan (centrifugal fan) mounting structure as described above in the projection display apparatus such as the liquid crystal projector 1 of the present embodiment, the vibration of the centrifugal fan 15 propagates to the main body case 2 and causes noise. Can be prevented at low cost and effectively, so that it is particularly effective to view images in a quieter environment.
なお、上記実施形態では、投写型映像表示装置として光変調素子に液晶パネルを用いた液晶プロジェクタを示したが、他の映像光生成系を備える投写型映像表示装置においても本願発明を適用することができる。すなわち、ＤＬＰ（Digital Light Processing；テキサス・インスツルメンツ（TI）社の登録商標）方式等のプロジェクタにおいても本願発明を適用することができる。また、前面投写型の他、背面投写型映像表示装置においても本願発明を適用することができる。 In the above embodiment, a liquid crystal projector using a liquid crystal panel as a light modulation element is shown as a projection image display device. However, the present invention is also applied to a projection image display device having another image light generation system. Can do. That is, the present invention can be applied to a projector such as a DLP (Digital Light Processing; registered trademark of Texas Instruments (TI)) system. In addition to the front projection type, the present invention can be applied to a rear projection type image display apparatus.
また、投写型映像表示装置に限らず、一般的な電子機器においても、上記のような吸気構造や冷却ファン取付構造を採用することにより、吸気口から冷却ファンの駆動音が漏れるのを抑制することができると共に、フィルタの厚み分のスペースで済むので機器の大型化を防ぐことができ、また、フィルタ性能を向上することができ、さらには冷却ファンの振動が機器本体に伝播して騒音が大きくなるのを安価に且つ効果的に防ぐことができる。 Further, not only in the projection display apparatus but also in general electronic equipment, by adopting the intake structure and the cooling fan mounting structure as described above, it is possible to suppress the leakage of the cooling fan drive sound from the intake port. In addition, the space for the thickness of the filter is sufficient, so that the size of the device can be prevented, the filter performance can be improved, and the vibration of the cooling fan can propagate to the device body to generate noise. An increase in size can be prevented inexpensively and effectively.
１ 液晶プロジェクタ
２ 本体ケース
２ａ 上ケース
２ｂ 下ケース
４ 吸気口
６ 開閉蓋
７ 排気口
８ 投写レンズ
９ 光源ランプユニット
１０ 光学系
１１ 電源ユニット
１２，１３ 軸流ファン
１４，１５ 遠心ファン
１５ａ 吸入口
１５ｂ ケーシング
１５ｃ 位置決め固定部
１６ 吐出側ダクト
１７ 吹出口
１８ 吸入側ダクト
１９ 吸気口
２０ シールド部材
２１ フィルタ
２２ 吸気口
２３ フィルタ濾材
２４ フィルタ枠体
２５ 弾性片
２６ 押さえ突起
２７ 遠心ファン支持部材
２７ａ 支持突起
２７ｃ 位置決め固定部
２８ 遠心ファンカバー部材
２８ａ 支持突起
２９ 取付部
３０ 弾性部材
DESCRIPTION OF SYMBOLS 1 Liquid crystal projector 2 Main body case 2a Upper case 2b Lower case 4 Intake port 6 Opening / closing lid 7 Exhaust port 8 Projection lens 9 Light source lamp unit 10 Optical system 11 Power supply unit 12, 13 Axial fan 14, 15 Centrifugal fan 15a Intake port 15b Casing 15c Positioning and fixing part 16 Discharge side duct 17 Outlet 18 Inlet side duct 19 Inlet 20 Shield member 21 Filter 22 Inlet 23 Filter medium 24 Filter frame 25 Elastic piece 26 Holding protrusion 27 Centrifugal fan support member 27a Support protrusion 27c Positioning and fixing Part 28 Centrifugal fan cover member 28a Support protrusion 29 Mounting part 30 Elastic member
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007217420A JP4966786B2 (en) | 2007-08-23 | 2007-08-23 | Intake structure, projection display apparatus using the same, and electronic equipment |
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| JP2007217420A JP4966786B2 (en) | 2007-08-23 | 2007-08-23 | Intake structure, projection display apparatus using the same, and electronic equipment |
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| JP2009053266A JP2009053266A (en) | 2009-03-12 |
| JP4966786B2 true JP4966786B2 (en) | 2012-07-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102893069A (en) | 2011-05-10 | 2013-01-23 | 嘉纳福株式会社 | Helically corrugated synthetic resin pipe with joint, and structure for connecting helically corrugated synthetic resin pipes |
| CN103133425B (en) * | 2011-11-25 | 2016-11-16 | 索尼公司 | The buffer-type fixed structure of cooling fan |
| KR101920378B1 (en) * | 2018-07-05 | 2018-11-20 | 엘아이지넥스원 주식회사 | Apparatus for reducing noise and blocking foreign matter of Air-cooled electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57142876U (en) * | 1981-03-05 | 1982-09-07 | ||
| JPS58158235U (en) * | 1982-04-14 | 1983-10-21 | 富士電機株式会社 | Drip-proof ventilation device with filter |
| JP3598763B2 (en) * | 1996-10-04 | 2004-12-08 | セイコーエプソン株式会社 | Projection display device |
| JP3909137B2 (en) * | 1998-01-16 | 2007-04-25 | 株式会社日立製作所 | Dust-proof device for ceiling-suspended liquid crystal projector and liquid crystal projector having the same |
| JPH11231418A (en) * | 1998-02-13 | 1999-08-27 | Seiko Epson Corp | Projection type display device |
| JP2002151875A (en) * | 2000-11-14 | 2002-05-24 | Yamaha Corp | Ventilation structure of electronic equipment |
| JP2003233133A (en) * | 2002-02-12 | 2003-08-22 | Canon Inc | Noise suppressor and optical device having the same |
| JP2004264759A (en) * | 2003-03-04 | 2004-09-24 | Seiko Epson Corp | Projector |
| JP2004354587A (en) * | 2003-05-28 | 2004-12-16 | Seiko Epson Corp | Stationary plate, optical device and projector |
| JP4265443B2 (en) * | 2004-02-27 | 2009-05-20 | ヤマハ株式会社 | Air conditioning structure of electrical equipment |
| JP2006023550A (en) * | 2004-07-08 | 2006-01-26 | Funai Electric Co Ltd | Image display projector |
| JP2006208720A (en) * | 2005-01-27 | 2006-08-10 | Sharp Corp | Electric equipment |
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