JP3490953B2 - LCD projector - Google Patents
LCD projectorInfo
- Publication number
- JP3490953B2 JP3490953B2 JP2000079380A JP2000079380A JP3490953B2 JP 3490953 B2 JP3490953 B2 JP 3490953B2 JP 2000079380 A JP2000079380 A JP 2000079380A JP 2000079380 A JP2000079380 A JP 2000079380A JP 3490953 B2 JP3490953 B2 JP 3490953B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- movable frame
- crystal panel
- adjustment
- bracket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Liquid Crystal (AREA)
- Projection Apparatus (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液晶パネルの画像
を強力な光で照射して写し出す液晶プロジェクタに関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal projector for projecting an image on a liquid crystal panel by irradiating it with strong light.
【０００２】[0002]
【従来の技術】従来より、光の３原色であるＲ、Ｇ、Ｂ
(赤、緑、青)に対応した３枚の液晶パネルを光源の強い
光で照射した後に、光を合成し、スクリーンに画像を映
し出す液晶プロジェクタが提案されている。図７は、該
液晶プロジェクタの断面平面図である。キャビネット
(８)内には、４枚の全反射ミラー(82a)(82b)(82c)(82d)
が光軸Ｌに対して傾いて配備され、Ｒを透過してＢとＧ
を反射するＲ分光用ダイクロイックミラー(83a)、Ｇを
反射してＢを透過するＧ分光用ダイクロイックミラー(8
3b)が配備されている。光源(71)からの光は、コンデン
サレンズ(84)に集光されて、各ダイクロイックミラー(8
3a)(83b)によってＲ、Ｇ、Ｂに分光された後に、夫々に
対応する液晶パネル(75)(74)(76)を照射して、プリズム
体(80)に集光されて投写レンズ(72)からスクリーン(図
示せず)に照射される。図８は、各液晶パネル(75)の保
持構造を示す側面断面図である。液晶パネル(75)は、金
属製のブラケット(６)の一面に密着して取り付けられ、
該ブラケット(６)の下方には液晶パネル(75)を冷却する
ファン(９)が取り付けられている。ファン(９)からの風
は上向きに流れて、ブラケット(６)及びブラケット(６)
に接していない液晶パネル(75)の面を冷却する。ブラケ
ット(６)が金属製であるから、熱を吸収しやすい。2. Description of the Related Art Conventionally, R, G, and B which are three primary colors of light
A liquid crystal projector has been proposed in which three liquid crystal panels corresponding to (red, green, and blue) are irradiated with strong light from a light source, and then the lights are combined to display an image on a screen. FIG. 7 is a sectional plan view of the liquid crystal projector. cabinet
In (8), four total reflection mirrors (82a) (82b) (82c) (82d)
Is tilted with respect to the optical axis L, transmitted through R, and then B and G
R spectroscopic dichroic mirror (83a) that reflects light, and G spectroscopic dichroic mirror (8 that reflects G and transmits B)
3b) has been deployed. The light from the light source (71) is condensed on the condenser lens (84) and is transferred to each dichroic mirror (8
After being split into R, G, and B by 3a) and (83b), the corresponding liquid crystal panels (75), (74), and (76) are irradiated, and are condensed on the prism body (80) and projected onto the projection lens ( A screen (not shown) is irradiated from 72). FIG. 8 is a side sectional view showing a holding structure of each liquid crystal panel (75). The liquid crystal panel (75) is attached closely to one surface of the metal bracket (6),
A fan (9) for cooling the liquid crystal panel (75) is attached below the bracket (6). The wind from the fan (9) flows upward, and the bracket (6) and the bracket (6)
Cool the surface of the liquid crystal panel (75) that is not in contact with. Since the bracket (6) is made of metal, it easily absorbs heat.
【０００３】[0003]
【発明が解決しようとする課題】上記構造では、液晶パ
ネル(75)上にて、ブラケット(６)に接している面には、
冷却空気が当たらず、冷却効果が低い。近年、液晶プロ
ジェクタは市場から高輝度化の要望が高く、光源(71)を
更に明るくすることが求められている。しかし、従来の
構造では冷却効果が低い故に、かかる市場の要求に対応
できない虞れがある。また、従来の構造にあっては、図
８に示すように、ファン(９)からの空気が液晶パネル(7
5)の下面に当たって渦流れ(62)を発生し、空気のスムー
ズな流れを妨げている。この点でも冷却効果が低かっ
た。本発明は、液晶パネルの冷却効果を高めることを目
的とする。In the above structure, on the surface of the liquid crystal panel (75) in contact with the bracket (6),
Cooling air does not hit and cooling effect is low. In recent years, liquid crystal projectors are highly demanded from the market for higher brightness, and it is required to make the light source (71) brighter. However, since the conventional structure has a low cooling effect, it may not be possible to meet the demands of the market. In addition, in the conventional structure, as shown in FIG. 8, the air from the fan (9) is discharged from the liquid crystal panel (7).
The vortex flow (62) is generated by hitting the lower surface of (5) and hinders the smooth flow of air. The cooling effect was also low in this respect. The present invention aims to enhance the cooling effect of a liquid crystal panel.
【０００４】[0004]
【課題を解決する為の手段】液晶パネル(75)とブラケッ
ト(６)の間には、液晶パネル(75)を冷却する空気の流路
が設けられている。液晶パネル(75)上にて、少なくとも
該流路の上流側には、先端に向かって幅狭になる断面形
状を呈し、液晶パネル(75)とブラケット(６)の間を通過
する空気がスムーズに流れることを許す分岐条(７)が形
成されている。A flow path of air for cooling the liquid crystal panel (75) is provided between the liquid crystal panel (75) and the bracket (6). On the liquid crystal panel (75), at least on the upstream side of the flow path, a cross-sectional shape that narrows toward the tip is provided, and the air passing between the liquid crystal panel (75) and the bracket (6) is smooth. A divergence (7) is formed to allow the flow to.
【０００５】[0005]
【作用及び効果】液晶パネル(75)とブラケット(６)の間
には、液晶パネル(75)を冷却する空気の流路が設けられ
ているから、液晶パネル(75)は全面が空冷される。これ
により、冷却効果は従来よりも改善される。また、液晶
パネル(75)への空気流れは、分岐条(７)に当たって液晶
パネル(75)とブラケット(６)の間の流路を通る。これに
より、液晶パネル(75)上にて渦流れは発生せず、液晶パ
ネル(75)を冷却する空気はスムーズに流れる。[Operation and Effect] Since the air flow path for cooling the liquid crystal panel (75) is provided between the liquid crystal panel (75) and the bracket (6), the entire surface of the liquid crystal panel (75) is air-cooled. . Thereby, the cooling effect is improved as compared with the conventional case. The air flow to the liquid crystal panel (75) hits the branch strip (7) and passes through the flow path between the liquid crystal panel (75) and the bracket (6). As a result, no vortex flow is generated on the liquid crystal panel (75), and the air that cools the liquid crystal panel (75) flows smoothly.
【０００６】[0006]
【発明の実施の形態】以下、本発明の一例を図を用いて
詳述する。本例は、液晶パネル(75)を保持する構造に特
徴があり、液晶プロジェクタ内のダイクロイックミラー
等の光学部品の配置は、図７に示す従来の装置と同じで
ある。図１は、液晶パネル(75)を保持するブラケット
(６)の側面断面図である。ブラケット(６)は金属製であ
り、液晶パネル(75)はスペーサ(60)を介してブラケット
(６)にビス(61)止めされている。これにより、液晶パネ
ル(75)とブラケット(６)の間には、隙間Ｍが形成され、
液晶パネル(75)を冷却する空気の流路が設けられる。BEST MODE FOR CARRYING OUT THE INVENTION An example of the present invention will be described in detail below with reference to the drawings. This example is characterized by a structure for holding the liquid crystal panel (75), and the arrangement of optical components such as a dichroic mirror in the liquid crystal projector is the same as that of the conventional device shown in FIG. Figure 1 shows the bracket that holds the LCD panel (75).
It is a side sectional view of (6). The bracket (6) is made of metal, and the liquid crystal panel (75) is attached to the bracket through the spacer (60).
The screw (61) is fixed to (6). As a result, a gap M is formed between the liquid crystal panel (75) and the bracket (6),
An air flow path for cooling the liquid crystal panel (75) is provided.
【０００７】液晶パネル(75)を空冷するファン(９)は、
ブラケット(６)の下方に設けられ、ファン(９)からの空
気は上向きに流れる。液晶パネル(75)の上下端部には、
先端が尖った分岐条(７)(７)が設けられている。ファン
(９)から液晶パネル(75)に向かって流れた空気は、分岐
条(７)に当たって、一部は液晶パネル(75)とブラケット
(６)の隙間Ｍを通り、他は液晶パネル(75)の外側を流
れ、液晶パネル(75)の両面を冷やす。分岐条(７)を設け
たことにより、渦流れは発生せず、液晶パネル(75)を冷
却する空気はスムーズに流れる。尚、スペーサ(60)に変
えてブラケット(６)に絞り加工を施して、突起を形成し
てもよい。また、分岐条(７)は空気流れの上流側、即ち
下端部のみに設けられていてもよい。更に、分岐条(７)
は先端に向かって幅が狭くなる断面形状であればよう
く、例えば図１に一点鎖線で示すように、円弧状でもよ
い。The fan (9) for air-cooling the liquid crystal panel (75) is
It is provided below the bracket (6), and the air from the fan (9) flows upward. At the upper and lower ends of the liquid crystal panel (75),
A branch strip (7) (7) having a sharp tip is provided. fan
The air flowing from (9) toward the liquid crystal panel (75) hits the branch strip (7), and a part of the air enters the liquid crystal panel (75) and the bracket.
The other flows through the gap M of (6) and flows outside the liquid crystal panel (75) to cool both sides of the liquid crystal panel (75). By providing the branch strips (7), no vortex flow is generated and the air for cooling the liquid crystal panel (75) flows smoothly. The bracket (6) may be drawn instead of the spacer (60) to form the protrusion. Further, the branch strip (7) may be provided on the upstream side of the air flow, that is, only on the lower end portion. In addition, divergence (7)
May have a cross-sectional shape whose width becomes narrower toward the tip, and may have, for example, an arc shape as shown by the alternate long and short dash line in FIG.
【０００８】(位置調整機構)斯種液晶プロジェクタにあ
っては、各液晶パネル(75)(74)(76)を上下左右移動及び
光軸Ｌを中心に回動させる位置調整機構を設けて、Ｒ、
Ｇ、Ｂに対応した画像を正確に重ね合わせる構成が採用
されている。本例にあっては、ブラケット(６)を４枚の
板材を重ね合わせて構成し、位置調整機構(１)を兼ねて
いる。この位置調整機構(１)は、以前出願人が特開平１
１−８５０２７号にて開示しており、概略構成を以下に
示す。以下にあっては、Ｒの液晶パネル(75)を調整する
機構を例示するが、他の液晶パネル(74)(76)にも同様の
機構が取り付けられる。図２は、位置調整機構(１)の分
解斜視図である。位置調整機構(１)は、キャビネット
(８)に固定される固定枠(２)及び回動調整用可動枠
(３)、左右調整用可動枠(４)、上下調整用可動枠(５)を
重ね合わせており、夫々金属板を折曲して構成される。
回動調整用可動枠(３)に液晶パネル(75)が取り付けられ
る。固定枠(２)および可動枠(３)(４)(５)の下部には、
夫々光源(71)の光が透過可能な開口(20)(30)(40)(50)が
開設され、液晶パネル(75)は回動調整用可動枠(３)の開
口(30)を覆う。各開口(20)(30)(40)(50)の中心は、光軸
Ｌに一致している。(Position adjusting mechanism) In this type of liquid crystal projector, a position adjusting mechanism for moving the liquid crystal panels (75), (74) and (76) up and down and to the left and right and rotating them around the optical axis L is provided. R,
A configuration is adopted in which images corresponding to G and B are accurately superimposed. In this example, the bracket (6) is constructed by stacking four plate members and also serves as the position adjusting mechanism (1). The position adjusting mechanism (1) was previously disclosed by the applicant in Japanese Patent Laid-Open No.
It is disclosed in No. 1-85027, and the schematic configuration is shown below. In the following, a mechanism for adjusting the R liquid crystal panel (75) is illustrated, but the same mechanism is attached to the other liquid crystal panels (74) and (76). FIG. 2 is an exploded perspective view of the position adjusting mechanism (1). The position adjustment mechanism (1) is a cabinet
Fixed frame (2) fixed to (8) and movable frame for rotation adjustment
(3), the left and right adjustment movable frame (4) and the up and down adjustment movable frame (5) are superposed on each other, and each is formed by bending a metal plate.
A liquid crystal panel (75) is attached to the rotary adjustment movable frame (3). Below the fixed frame (2) and movable frame (3) (4) (5),
The openings (20), (30), (40) and (50) through which the light of the light source (71) can pass are opened, and the liquid crystal panel (75) covers the opening (30) of the rotation adjusting movable frame (3). . The centers of the openings (20) (30) (40) (50) coincide with the optical axis L.
【０００９】（各枠の構造）固定枠
固定枠(２)の上端左側には、突出板(21)が水平に設けら
れ、該突出板(21)には、後記する調整ビス(23)が嵌まる
切欠き(22)が開設されている。固定枠(２)の上部両側お
よび下部左側には、後記する上下左右調整用ピン(55)が
嵌合する長孔(26)が縦長に開設されている。固定枠(２)
の上部中央には、後記する固定ビス(15)(16)(16)（図４
参照）が貫通する貫通孔(24)(24)(25)が開設されてい
る。(Structure of each frame) Fixed frame A protruding plate (21) is horizontally provided on the upper left side of the fixed frame (2), and an adjusting screw (23) described later is provided on the protruding plate (21). A fitting notch (22) has been opened. Long holes (26) into which vertical adjustment pins (55), which will be described later, are fitted are formed vertically on both upper sides and lower left sides of the fixed frame (2). Fixed frame (2)
In the center of the upper part of the fixing screws (15) (16) (16) (Fig.
Through holes (24), (24), (25) are opened.
【００１０】上下調整用可動枠
固定枠(２)の背面側には、上下調整用可動枠(５)が配備
される。上下調整用可動枠(５)の上端部両側には、突出
板(51)(52)が水平に設けられ、左側の突出板(51)には、
前記調整ビス(23)が螺合するビス孔(53)が開設されてい
る。右側の突出板(52)上には、左右調整用の偏心シャフ
ト(54)が配備されている。上下調整用可動枠(５)の上端
部両側および下端部左側からは、上下左右調整用ピン(5
5)が突出している。上下調整用可動枠(５)の上端部中央
には、横長の貫通孔(56)が開設され、可動枠(５)上にて
貫通孔(56)の左右両側にビス孔(57)(57)が開設されてい
る。貫通孔(56)には固定ビス(15)が嵌まり、ビス孔(57)
(57)には固定ビス(16)(16)が螺合する。[0010] the rear side of the vertical adjusting movable frame to the fixed frame (2), the vertical adjustment movable frame (5) is deployed. Projection plates (51) and (52) are horizontally provided on both sides of the upper end of the vertical adjustment movable frame (5), and the left projection plate (51) includes
A screw hole (53) into which the adjustment screw (23) is screwed is provided. An eccentric shaft (54) for left / right adjustment is provided on the right protruding plate (52). From the upper and lower sides of the movable frame (5) for up and down adjustment and from the left side of the lower end, the vertical and horizontal adjustment pins (5
5) is protruding. A horizontally long through hole (56) is formed at the center of the upper end of the vertical adjustment movable frame (5), and screw holes (57) (57) are provided on the left and right sides of the through hole (56) on the movable frame (5). ) Has been established. The fixing screw (15) fits into the through hole (56), and the screw hole (57)
Fixing screws (16) and (16) are screwed into (57).
【００１１】左右調整用可動枠
固定枠(２)の前面側に、左右調整用可動枠(４)が配備さ
れ、該左右調整用可動枠(４)の上端部からは突出板(41)
が水平に設けられている。該突出板(41)上の左側には、
偏心シャフト(42)が回転自在に配備され、右側には前記
偏心シャフト(54)の径と等幅の調整孔(43)が開設されて
いる。左右調整用可動枠(４)には前記上下左右調整用ピ
ン(55)が嵌合する長孔(44)が横長に開設されている。左
右調整用可動枠(４)の上端部中央には、ビス孔(45)が開
設され、該ビス孔(45)の左右に長孔(46)(46)が横長に開
設されている。ビス孔(45)には、固定ビス(15)が螺合
し、長孔(46)(46)には、後記する固定ビス(65)(65)が嵌
合する。また、左右調整用可動枠(４)からは３本の回動
調整用ピン(47)(47)(47)が前方へ突出している。 Left-right adjustment movable frame A left-right adjustment movable frame (4) is provided on the front side of the fixed frame (2), and a projecting plate (41) is provided from the upper end of the left-right adjustment movable frame (4).
Is installed horizontally. On the left side of the protruding plate (41),
An eccentric shaft (42) is rotatably provided, and an adjusting hole (43) having the same width as the diameter of the eccentric shaft (54) is formed on the right side. A long hole (44) into which the vertical and horizontal adjustment pins (55) are fitted is formed in the horizontally adjustable movable frame (4) in a horizontally long shape. A screw hole (45) is formed in the center of the upper end of the left-right adjustment movable frame (4), and long holes (46) (46) are formed horizontally on the left and right sides of the screw hole (45). The fixing screw (15) is screwed into the screw hole (45), and the fixing screws (65) and (65) described later are fitted into the long holes (46) and (46). Further, three rotation adjusting pins (47), (47) and (47) project forward from the left and right adjusting movable frame (4).
【００１２】回動調整用可動枠
左右調整用可動枠(４)の前面側には、回動調整用可動枠
(３)が配備される。回動調整用可動枠(３)の上端部に
は、突出板(31)が水平に設けられ、該突出板(31)上に
は、前記偏心シャフト(42)の径に略等しい幅の調整孔(3
2)が開設されている。回動調整用可動枠(３)の上端部両
側および下端部左側には、前記上下左右調整用ピン(55)
が移動自在に嵌まる貫通孔(33)が開設されている。回動
調整用可動枠(３)の上部中央には、固定ビス(15)(16)(1
6)が夫々移動自在に貫通する貫通孔(34)(35)(35)が開設
されている。また、回動調整用可動枠(３)には、左右調
整用可動枠(４)の回動調整用ピン(47)(47)(47)が嵌合す
る長孔(36)(36)(36)が開設されている。各長孔(36)は、
開口(30)の中心、即ち光軸Ｌからの距離が略等しい位置
に開設されている。[0012] on the front side of the rotation adjusting movable frame lateral adjustment movable frame (4), the rotary adjusting movable frame
(3) will be deployed. A projecting plate (31) is horizontally provided on the upper end of the rotation adjusting movable frame (3), and a width of the projecting plate (31) is approximately equal to the diameter of the eccentric shaft (42). Hole (3
2) has been opened. The upper and lower left and right adjusting pins (55) are provided on both sides of the upper end of the movable frame (3) for rotation adjustment and on the left side of the lower end.
There is a through hole (33) in which is freely movable. At the center of the upper part of the rotary adjustment movable frame (3), fixed screws (15), (16) (1
Through-holes (34), (35), (35) through which the (6) respectively movably pass are opened. Further, the rotation adjusting movable frame (3) has elongated holes (36) (36) (where the rotation adjusting pins (47) (47) (47) of the left and right adjusting movable frame (4) fit. 36) has been opened. Each slot (36)
The centers of the openings (30), that is, the distances from the optical axis L are substantially equal.
【００１３】（位置調整機構の組立）図３(a)は、位置
調整機構(１)の平面図、図３(b)は同上の正面図であ
る。図４は位置調整機構(１)を図３(b)のＡ−Ａ線を含
む面にて破断した左側面断面図である。まず、回動調整
用可動枠(３)に左右調整用可動枠(４)を重ね、左右調整
用可動枠(４)の偏心シャフト(42)を、回動調整用可動枠
(３)の調整孔(32)に嵌める。左右調整用可動枠(４)の各
回動調整用ピン(47)を、回動調整用可動枠(３)の対応す
る長孔(36)に嵌める。固定ビス(15)が、回動調整用可動
枠(３)の前側から、回動調整用可動枠(３)の貫通孔(34)
を通り、左右調整用可動枠(４)のビス孔(45)に螺合す
る。(Assembly of Position Adjusting Mechanism) FIG. 3 (a) is a plan view of the position adjusting mechanism (1), and FIG. 3 (b) is a front view of the same. FIG. 4 is a left side sectional view of the position adjusting mechanism (1) taken along a plane including line AA in FIG. 3 (b). First, the left and right adjustment movable frame (4) is placed on the rotation adjustment movable frame (3), and the eccentric shaft (42) of the left and right adjustment movable frame (4) is attached to the rotation adjustment movable frame.
Fit in the adjustment hole (32) of (3). The respective rotation adjustment pins (47) of the left and right adjustment movable frame (4) are fitted into the corresponding elongated holes (36) of the rotation adjustment movable frame (3). The fixed screw (15) is provided with a through hole (34) in the rotation adjusting movable frame (3) from the front side of the rotation adjusting movable frame (3).
Through the screw hole (45) of the left-right adjustment movable frame (4).
【００１４】次に、固定枠(２)に回動調整用可動枠(３)
を締結した左右調整用可動枠(４)を重ね、該固定枠(２)
の裏側に上下調整用可動枠(５)を重ねる。上下調整用可
動枠(５)の偏心シャフト(54)を、左右調整用可動枠(４)
の調整孔(43)に嵌め、上下調整用可動枠(５)の上下左右
調整用ピン(55)を、固定枠(２)の対応する長孔(26)およ
び左右調整用可動枠(４)の対応する長孔(44)に嵌める。
図４に示すように、固定ビス(16)(16)が、回動調整用可
動枠(３)の前側から、左右調整用可動枠(４)及び固定枠
(２)を貫通し、上下調整用可動枠(５)のビス孔(57)(57)
に螺合することにより、回動調整用可動枠(３)および左
右調整用可動枠(４)は、上下調整用可動枠(５)に締結さ
れる。固定枠(２)の切欠き(22)に調整ビス(23)の頭部を
嵌め、該調整ビス(23)をビス孔(53)に螺合することによ
り、上下調整用可動枠(５)は、固定枠(２)に取り付けら
れる。Next, the movable frame (3) for rotation adjustment is attached to the fixed frame (2).
The movable frame (4) for left and right adjustment, which is fastened to
Stack the movable frame (5) for vertical adjustment on the back side of the. Attach the eccentric shaft (54) of the vertical adjustment movable frame (5) to the left and right adjustment movable frame (4).
Of the fixed frame (2) and the movable frame for horizontal adjustment (4) by fitting the pins (55) for vertical and horizontal adjustment of the movable frame for vertical adjustment (5) into the adjustment holes (43) of the fixed frame (2). To the corresponding long hole (44).
As shown in FIG. 4, the fixing screws (16) and (16) move from the front side of the rotation adjusting movable frame (3) to the left and right adjusting movable frame (4) and the fixed frame.
Penetrating (2), screw holes (57) (57) of the movable frame (5) for vertical adjustment
The movable frame (3) for rotation adjustment and the movable frame (4) for left / right adjustment are fastened to the movable frame (5) for vertical adjustment by being screwed into. The head of the adjustment screw (23) is fitted into the notch (22) of the fixed frame (2), and the adjustment screw (23) is screwed into the screw hole (53), whereby the vertical adjustment movable frame (5) Are attached to the fixed frame (2).
【００１５】上下調整
上下調整を行なうには、図４に示すように、固定枠(２)
に取り付けた調整ビス(23)を回転する。調整ビス(23)
は、ネジ推力により、上下調整用可動枠(５)の突出板(5
1)を上下に駆動する。上下調整用可動枠(５)の上下左右
調整用ピン(55)(55)(55)は、固定枠(２)の長孔(26)(26)
(26)内を上下に摺動する。また、前記上下左右調整用ピ
ン(55)(55)(55)および左右の固定ビス(16)(16)が、夫々
左右調整用可動枠(４)の長孔(44)(44)(44)および長孔(4
6)(46)の上下縁を押して、左右調整用可動枠(４)は、上
下調整用可動枠(５)と一体となって上下に移動する。
左右調整用可動枠(４)が上下に移動すると、図２に示す
左右調整用可動枠(４)の回動調整用ピン(47)(47)(47)(4
7)が、回動調整用可動枠(３)の長孔(36)(36)(36)(36)の
上下縁を押すから、回動調整用可動枠(３)が左右調整用
可動枠(４)と一体となって上下に移動する。[0015] performing the vertical adjustment vertical adjustment, as shown in FIG. 4, the fixed frame (2)
Rotate the adjustment screw (23) attached to. Adjustment screw (23)
By the screw thrust, the protruding plate (5
Drive 1) up and down. The pins (55) (55) (55) for adjusting the vertical and horizontal directions of the movable frame (5) for vertical adjustment are the long holes (26) (26) of the fixed frame (2).
(26) Slide up and down inside. Also, the vertical adjustment pins (55) (55) (55) and the left and right fixing screws (16) (16) are provided in the long holes (44) (44) (44) of the left and right adjustment movable frame (4), respectively. ) And slot (4
6) By pushing the upper and lower edges of (46), the left-right adjustment movable frame (4) moves up and down together with the up-down adjustment movable frame (5).
When the left / right adjustment movable frame (4) moves up and down, the rotation adjustment pins (47) (47) (47) (4) of the left / right adjustment movable frame (4) shown in FIG.
Since 7) pushes the upper and lower edges of the long holes (36), (36), (36), (36) of the rotation adjusting movable frame (3), the rotation adjusting movable frame (3) is moved to the left and right adjusting movable frame. Moves up and down together with (4).
【００１６】左右調整
図５(a)、(b)は、左右の位置調整を示す図であり、(a)
は平面図、(b)は正面図である。左右調整を行なうに
は、上下調整用可動枠(５)上の偏心シャフト(54)を回
す。偏心シャフト(54)は、左右調整用可動枠(４)の調整
孔(43)の左右縁を押して、左右調整用可動枠(４)の突出
板(41)を左右方向に駆動する。このとき、上下調整用可
動枠(５)の上下左右調整用ピン(55)(55)(55)及び左右の
固定ビス(16)(16)が、夫々左右調整用可動枠(４)の長孔
(44)(44)(44)及び長孔(46)(46)内に嵌まっているから、
左右調整用可動枠(４)は左右に移動する。左右調整用可
動枠(４)の回動調整用ピン(47)(47)(47)が、回動調整用
可動枠(３)の長孔(36)(36)(36)の端縁を押し、回動調整
用可動枠(３)は左右調整用可動枠(４)と一体となって左
右に移動する。 Left / Right Adjustment FIGS. 5 (a) and 5 (b) are views showing left / right position adjustment.
Is a plan view and (b) is a front view. To make a left-right adjustment, turn the eccentric shaft (54) on the up-down adjustment movable frame (5). The eccentric shaft (54) pushes the left and right edges of the adjustment hole (43) of the left-right adjustment movable frame (4) to drive the protruding plate (41) of the left-right adjustment movable frame (4) in the left-right direction. At this time, the up / down / left / right adjusting pins (55) (55) (55) and the left and right fixing screws (16) (16) of the up / down adjustment movable frame (5) respectively lengthen the left / right adjustment movable frame (4). Hole
(44) (44) (44) and the long holes (46) (46) fit in,
The left-right adjustment movable frame (4) moves left and right. The rotation adjustment pins (47) (47) (47) of the left and right adjustment movable frame (4) fix the edges of the long holes (36), (36) and (36) of the rotation adjustment movable frame (3). The movable frame (3) for pushing and rotating adjustment moves left and right together with the movable frame (4) for left and right adjustment.
【００１７】回動調整
図６(a)、(b)は、回動調整を示す図であり、(a)は平面
図、(b)は正面図である。回動調整を行なうには、左右
調整用可動枠(４)に取り付けた偏心シャフト(42)を回転
する。偏心シャフト(42)は、回動調整用可動枠(３)の調
整孔(32)の左右縁を押す。回動調整用可動枠(３)は、左
右調整用可動枠(４)の回動調整用ピン(47)(47)(47)(47)
に案内されて開口(30)の中心、即ち光軸Ｌを中心として
回動する。 Rotational Adjustment FIGS. 6 (a) and 6 (b) are views showing the rotational adjustment . FIG. 6 (a) is a plan view and FIG. 6 (b) is a front view. To adjust the rotation, the eccentric shaft (42) attached to the left-right adjustment movable frame (4) is rotated. The eccentric shaft (42) pushes the left and right edges of the adjustment hole (32) of the rotation adjusting movable frame (3). The rotation adjusting movable frame (3) is a rotation adjusting pin (47) (47) (47) (47) of the left and right adjustment movable frame (4).
And is rotated about the center of the opening (30), that is, the optical axis L.
【００１８】図４に示すように、回動調整用可動枠(３)
上にスペーサ(60)を設けて、液晶パネル(75)と回動調整
用可動枠(３)の間に隙間を設けて、ファン(９)の空気の
流路を形成している。また、液晶パネル(75)の上下端部
に分岐条(７)(７)を設けていることにより、液晶パネル
(75)の下端部近傍にて渦流れは発生せず、液晶パネル(7
5)を冷却する空気はスムーズに流れる。As shown in FIG. 4, the movable frame for rotation adjustment (3)
A spacer (60) is provided on the upper side of the liquid crystal panel (75) and a movable frame (3) for rotation adjustment to provide a space for the fan (9). Further, since the ridges (7) and (7) are provided at the upper and lower ends of the liquid crystal panel (75), the liquid crystal panel
No vortex flow was generated near the lower end of (75), and the liquid crystal panel (7
The air that cools 5) flows smoothly.
【００１９】上記実施例の説明は、本発明を説明するた
めのものであって、特許請求の範囲に記載の発明を限定
し、或は範囲を減縮する様に解すべきではない。又、本
発明の各部構成は上記実施例に限らず、特許請求の範囲
に記載の技術的範囲内で種々の変形が可能であることは
勿論である。The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope. The configuration of each part of the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims.
【図１】液晶パネルを保持する機構の側面断面図であ
る。FIG. 1 is a side sectional view of a mechanism for holding a liquid crystal panel.
【図２】位置調整機構の分解斜視図である。FIG. 2 is an exploded perspective view of a position adjusting mechanism.
【図３】(a)は、位置調整機構の平面図、(b)は同上の正
面図である。3A is a plan view of the position adjusting mechanism, and FIG. 3B is a front view of the same.
【図４】位置調整機構を図３(b)のＡ−Ａ線を含む面に
て破断した左側面断面図である。FIG. 4 is a left side sectional view of the position adjusting mechanism taken along a plane including line AA in FIG. 3 (b).
【図５】(a)、(b)は、左右の位置調整を示す図であり、
(a)は平面図、(b)は正面図である。5A and 5B are diagrams showing left and right position adjustments,
(a) is a plan view and (b) is a front view.
【図６】(a)、(b)は、回動調整を示す図であり、(a)は
平面図、(b)は正面図である。6A and 6B are views showing rotation adjustment, FIG. 6A is a plan view, and FIG. 6B is a front view.
【図７】液晶プロジェクタの断面平面図である。FIG. 7 is a cross-sectional plan view of a liquid crystal projector.
【図８】従来の液晶パネルの保持構造を示す側面断面図
である。FIG. 8 is a side sectional view showing a conventional liquid crystal panel holding structure.
(１) 位置調整機構 (６) ブラケット (７) 分岐条 (９) ファン (71) 光源 (75) 液晶パネル (1) Position adjustment mechanism (6) Bracket (7) Bifurcation (9) Fan (71) Light source (75) LCD panel
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤村 信行 大阪府守口市京阪本通２丁目５番５号 三洋電機株式会社内 (56)参考文献 特開 平９−288315（ＪＰ，Ａ) 特開 平９−61782（ＪＰ，Ａ) 特開2000−2932（ＪＰ，Ａ) 特開 平10−197954（ＪＰ，Ａ) 特開 平11−258570（ＪＰ，Ａ) 特開 平10−186516（ＪＰ，Ａ) 特開 平１−158480（ＪＰ，Ａ) 特開 平６−281948（ＪＰ，Ａ) 実開 昭61−140345（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03B 21/00 - 21/30 G02F 1/13 G02F 1/1333 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Nobuyuki Fujimura 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (56) Reference JP-A-9-288315 (JP, A) JP 9-61782 (JP, A) JP 2000-2932 (JP, A) JP 10-197954 (JP, A) JP 11-258570 (JP, A) JP 10-186516 (JP, A) JP-A-1-158480 (JP, A) JP-A-6-281948 (JP, A) Actual development Sho 61-140345 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) ) G03B 21/00-21/30 G02F 1/13 G02F 1/1333
Claims (2)
5)と、該液晶パネル(75)を支持するブラケット(６)と、
液晶パネル(75)を冷却するファン(９)を具えた液晶プロ
ジェクタに於いて、 液晶パネル(75)とブラケット(６)の間には、液晶パネル
(75)を冷却する空気の流路が設けられて、 液晶パネル(75)上にて、少なくとも該流路の上流側に
は、先端に向かって幅狭になる断面形状を有し、液晶パ
ネル(75)とブラケット(６)の間を通過する空気がスムー
ズに流れることを許す分岐条(７)が形成されたことを特
徴とする液晶プロジェクタ。1. A liquid crystal panel (7) illuminated by a light source (71).
5) and a bracket (6) for supporting the liquid crystal panel (75),
In a liquid crystal projector having a fan (9) for cooling the liquid crystal panel (75), a liquid crystal panel is provided between the liquid crystal panel (75) and the bracket (6).
An air flow path for cooling (75) is provided, and on the liquid crystal panel (75), at least on the upstream side of the flow path, the liquid crystal panel has a cross-sectional shape that narrows toward the tip. A liquid crystal projector characterized in that a branch strip (7) is formed to allow the air passing between (75) and the bracket (6) to flow smoothly.
下左右移動及び光軸Ｌを中心に回動させることが可能な
位置調整機構(１)を構成する請求項１に記載の液晶プロ
ジェクタ。2. The liquid crystal according to claim 1, wherein the bracket (6) constitutes a position adjusting mechanism (1) capable of vertically and horizontally moving the liquid crystal panel (75) and rotating it around the optical axis L. projector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000079380A JP3490953B2 (en) | 2000-03-22 | 2000-03-22 | LCD projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000079380A JP3490953B2 (en) | 2000-03-22 | 2000-03-22 | LCD projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001264883A JP2001264883A (en) | 2001-09-26 |
| JP3490953B2 true JP3490953B2 (en) | 2004-01-26 |
Family
ID=18596635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000079380A Expired - Lifetime JP3490953B2 (en) | 2000-03-22 | 2000-03-22 | LCD projector |
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| Country | Link |
|---|---|
| JP (1) | JP3490953B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3698139B2 (en) | 2002-12-20 | 2005-09-21 | セイコーエプソン株式会社 | ELECTRO-OPTICAL DEVICE WITH MOUNTING CASE, PROJECTION TYPE DISPLAY DEVICE, AND MOUNTING CASE |
| JP3736522B2 (en) | 2002-12-20 | 2006-01-18 | セイコーエプソン株式会社 | ELECTRO-OPTICAL DEVICE WITH MOUNTING CASE, PROJECTION TYPE DISPLAY DEVICE, AND MOUNTING CASE |
| US8547312B2 (en) | 2008-07-28 | 2013-10-01 | Nec Display Solutions, Ltd. | Display apparatus |
| JP5328268B2 (en) | 2008-09-03 | 2013-10-30 | 三洋電機株式会社 | Projection display |
-
2000
- 2000-03-22 JP JP2000079380A patent/JP3490953B2/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| JP2001264883A (en) | 2001-09-26 |
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