JP2007298891A - Projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector having a mechanism for adjusting a current of cooling air so that air introduced in a lamp unit can be collected in an area of a lamp unit to be cooled, and capable of being used in a different type of projector. <P>SOLUTION: In the projector, the mechanism 6 for adjusting a current of cooling air, which extends from the air introduction hole of the lamp unit 4, is constructed from an angle adjustment member 60 and a length adjustment member 61 attached to the angle adjustment member 60. The length adjustment member 61 is overlapped by the angle adjustment member 60 such that the length adjustment member 61 projects a prescribed length from the end of the angle adjustment member 60. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a projector device that guides light from a light source to an optical system, generates an image, and magnifies and projects the image onto a front screen.

  The projector device includes an optical unit for generating an image and a lamp unit serving as a light source of the optical unit inside the casing. As shown in FIG. 25, the lamp unit includes an arc tube (42) and a reflector (41) that reflects light emitted from the arc tube (42) toward the optical unit.

When the lamp unit emits light, the arc tube (42) generates heat. If the temperature of the arc tube (42) exceeds the limit temperature, the life of the arc tube (42) is shortened. (42) is cooling. The reflector (41) has an air introduction hole (48) for introducing the air discharged from the cooling fan device (8) into the reflector (41) (see Patent Document 1).
JP 2003-123529 A [F21V 29/02]

  In order to efficiently cool the heat generating tube, it is desirable to concentrate the air (cooling air) introduced into the reflector (41) in the most heat generating portion of the heat generating tube (42). However, in the conventional lamp unit shown in FIG. 25, the cooling air introduced from the air introduction hole (48) is dispersed in the reflector (41). Therefore, as shown in FIG. 26, a cooling air adjustment mechanism (69) extending from the air introduction hole (48) toward the inside of the reflector (41) is provided, and the cooling air is made to follow the cooling air adjustment mechanism (69). A method of adjusting the direction of the cooling air and concentrating the cooling air on the position of the spherical portion (43) of the arc tube (42) can be considered.

However, in this method, when the position of the bulb portion (43) of the arc tube (42) with respect to the air introduction hole (48) changes, the direction in which the cooling air adjustment mechanism (69) extends into the reflector (41) needs to be changed. Further, when the wind speed of the cooling air from the cooling fan device (8) is increased, a part of the cooling air may be dispersed in the reflector (41). Therefore, in order to manufacture a projector device of a model in which the position of the spherical portion (43) of the arc tube (42) with respect to the air introduction hole (48) and the wind speed of the cooling air are different, a different cooling air adjustment mechanism ( 69) There was a problem that had to be prepared.
Accordingly, an object of the present invention is to provide a cooling air adjustment mechanism that can concentrate the air introduced into the lamp unit on a portion to be cooled of the lamp unit, and prepare a dedicated cooling air adjustment mechanism for each model. To provide a projector device that is not necessary.

  A projector apparatus according to the present invention generates a video image using a lamp unit (4), a cooling fan device (8) for cooling the lamp unit (4), and the lamp unit (4) as a light source. And an optical system that projects light toward the screen.

  The lamp unit (4) includes an arc tube (42) and a reflector (41) that surrounds the arc tube (42) and reflects the light emitted from the arc tube (42) toward the optical system. The lamp unit (4) is provided with an air introduction hole (48) for introducing the air discharged from the cooling fan device (8) into the reflector (41).

  The air introduction hole (48) of the lamp unit (4) is provided with a cooling air adjusting mechanism (6) for adjusting the flow of the cooling air introduced into the reflector (41). The cooling air adjusting mechanism (6) is connected to the angle adjusting member (60) protruding at a predetermined angle toward the arc tube (42) of the lamp unit (4), and the angle adjusting member (60). A length adjusting member (61) projecting with a predetermined length toward the arc tube (42) of the lamp unit (4) is provided.

  In the projector device according to the present invention, the inclination angle and the length of the cooling air adjustment mechanism (6) extending from the air introduction hole (48) of the lamp unit (4) are the angle adjustment member (60) and the length adjustment, respectively. It depends on the member (61). In such a cooling air adjusting mechanism (6), the angle adjusting member (60) and the length adjusting member (61) are combined, and the air discharged from the cooling fan device (8) is supplied to the lamp unit (4). It can be concentrated at a predetermined position. Therefore, when manufacturing projectors of different models, it is only necessary to change the combination of the angle adjustment member (60) and the length adjustment member (61) with different specifications, and a dedicated cooling air adjustment mechanism is prepared for each model. There is no need.

  In a specific configuration, the angle adjusting member (60) and the length adjusting member (61) are both made of sheet metal and connected to each other by welding. In a more specific configuration, the angle adjusting member (60) and the length adjusting member (61) are each formed with an engaging portion and an engaging receiving portion for defining the relative positions of each other.

  In the specific configuration, it is easy to extend the length adjusting member (61) from the end of the angle adjusting member (60) by a predetermined length.

  In a more specific configuration, the length adjusting member (61) includes a flat plate portion (64) projecting from the air introduction hole (48) of the lamp unit (4) toward the central portion of the reflector (41), A pair of side wall portions (65) and (65) projecting substantially vertically are formed on both sides of the flat plate portion (64).

  In this specific configuration, the air introduced into the reflector from the cooling fan device (8) can be more efficiently concentrated at a desired position of the lamp unit (4).

  In a more specific configuration, a holder (5) for housing the lamp unit (4) is provided, and the holder (5) has an air introduction hole (56) communicating with the air introduction hole (48) of the lamp unit (4). ) Has been established. The angle adjustment member (60) is integrally formed with a sheet metal attachment member (9) for attaching the cooling air adjustment mechanism (6) to the holder (5). A bent portion is formed to be detachably engaged with the end portion of the holder (5).

  In this specific configuration, the cooling air adjusting mechanism (6) can be attached to the inner holder (5) without using other parts such as screws.

  According to the projector device of the present invention, a cooling air adjustment mechanism that can concentrate the air introduced into the lamp unit on a portion to be cooled of the lamp unit is provided, and a dedicated cooling air adjustment mechanism is provided for each model. There is no need to prepare.

  Hereinafter, embodiments of the present invention in a liquid crystal projector apparatus will be described in detail with reference to the drawings. The liquid crystal projector includes a flat casing (1) composed of a lower half case (11) and an upper half case (12) as shown in FIG. 1, and a projection window is provided on a front panel (13) of the casing (1). As shown in FIG. 2, the rear panel (17) is provided with an exhaust hole (15) for hot air discharged from the built-in lamp unit. As shown in FIG. 3, the casing (1) includes an optical unit (2) for generating image light and a lamp unit (4) serving as a light source of the optical unit (2). The lamp unit (4) is accommodated in the outer holder (7).

Optical Unit As shown in FIG. 4, in the optical unit (2), white light incident on the first field mirror (21) from the lamp unit (4) is reflected by the first field mirror (21) and is reflected by the first dichroic mirror. Incident on (22). In the first dichroic mirror (22), red light and green light are reflected, and only blue light passes through the first dichroic mirror mirror (22). The blue light that has passed through the first dichroic mirror (22) enters the second field mirror (23), is reflected by the second field mirror (23), and enters the color composition device (3).

  The red light and green light reflected by the first dichroic mirror (22) enter the second dichroic mirror (27). Green light is reflected by the second dichroic mirror (27), and the green light reflected by the second dichroic mirror (27) is incident on the color composition device (3).

  The red light incident on the second dichroic mirror (27) passes through the second dichroic mirror (27) and is reflected by the third field mirror (26) and the fourth field mirror (25) to be a color composition device ( Incident to 3).

Color synthesizing device The color synthesizing device (3) comprises a color synthesizing prism (30), a red image generating unit (31), a green image generating unit (33) and a blue image generating unit (32), and a red image generating unit (31 ), The green image generation unit (33) and the blue image generation unit (32) are respectively configured by sequentially arranging an output side polarizing plate, a liquid crystal panel, and an incident side polarizing plate from the color synthesis prism (30) side. Yes.

  Red light, green light, and blue light incident on the color synthesizer (3) from the optical unit (2) pass through the red video generation unit (31), the green video generation unit (33), and the blue video generation unit (32), respectively. The light passes through and enters the color synthesis prism (30).

  The three colors of video light guided to the color synthesis prism (30) are synthesized by the color synthesis prism (30), and the resulting video light is enlarged and projected onto the front screen via the projection lens (20). .

As shown in FIGS. 5 and 6, the lamp unit (4) has an arc tube (42) and a parabolic curved reflector (41) surrounding the arc tube (42). . As the lamp unit (4), for example, a discharge light emitting lamp such as a metal halide lamp or an ultrahigh pressure mercury lamp can be used.

  The arc tube (42) includes a spherical portion (43) and a cylindrical portion (47) protruding from the spherical portion (43), and the spherical portion (43) is disposed at the bottom of the reflector (41), The shape part (47) extends vertically from the bottom of the reflector (41) toward the opening. The arc tube (42) emits light at the spherical portion (43), and the spherical portion (43) generates heat as the light is emitted.

The reflector (41) has four recesses (45) cut out from the opening toward the bottom, and the four recesses (45) to (45) are formed around the opening of the reflector (41). They are arranged at equal intervals. Further, the opening of the reflector (41) is covered with a light transmitting plate (44) made of a glass plate, and there are four recesses (45) to 45 between the light transmitting plate (44) and the reflector (41). (45), two concave portions (45) and (45) provided at positions facing each other, and the air introduction hole (48) of the lamp unit (4) and the air discharge hole (49 of the lamp unit (4)). ) Is configured.
In such a lamp unit (4), light from the arc tube (42) is reflected by the inner wall of the reflector (41), passes through the translucent plate (44), and is emitted to the outside.

The lamp unit (4) is held by the inner holder (5) shown in FIG. 7, and the inner holder (5) is accommodated in the outer holder (7) shown in FIG.
The inner holder (5) includes a front wall (50) whose outer shape is formed in a rectangular shape, a first side wall (51) and a second side wall (52 which are substantially orthogonal to the three sides of the front wall (50). ) And a third side wall (53). The front wall (50) of the inner holder (5) is disposed in front of the translucent plate (44) of the lamp unit (4), and as shown in FIG. A light exit hole (54) for exposing the translucent plate (44) of the unit (4) is provided.

  As shown in FIGS. 5 and 6, the first side wall (51), the second side wall (52), and the third side wall (53) of the inner holder (5) are on the reflector (41) side of the lamp unit (4). Encloses the part. Of these, the first side wall (51) and the second side wall (52) facing each other are each cut out from the front wall (50) toward the rear as shown in FIGS. A portion (59) is formed. Further, as shown in FIG. 8, on the outside of the emission hole of the front wall (50), a notch portion (58) formed on the first side wall (51) and connected to the notch portion (59), A notch (58) formed on the second side wall (52) and connected to the notch (59) is formed.

  The notch (59) formed in the first side wall (51) and the notch (58) formed in the front wall (50) are connected to each other, and the air introduction hole (56) of the inner holder (5) is connected. ), And a notch (59) formed in the second side wall (52) and a notch (58) formed in the front wall (50) are connected to each other, and the inner holder (5 ) Air discharge hole (57).

  As shown in FIG. 6, the air introduction hole (48) of the lamp unit (4) is exposed from the air introduction hole (56) of the inner holder (5), and the air discharge hole (49) of the lamp unit (4) is exposed. ) Is exposed from the air discharge hole (57) of the inner holder (5). The opening surfaces of the air introduction hole (48) of the lamp unit (4) and the air discharge hole (49) of the lamp unit (4) are respectively the air introduction hole (56) and the air discharge hole (57 of the inner holder (5)). ) Is disposed substantially parallel to the opening surface. The inner holder (5) is provided with a plurality of exhaust holes (55) in a third side wall (53) orthogonal to both the first side wall (51) and the second side wall (52).

  The air discharge hole (57) of the inner holder (5) is covered with a metal plate (not shown) provided with a plurality of through holes. On the other hand, a cooling air adjusting mechanism (6) is disposed at the position of the air introduction hole (56) of the inner holder (5), and the cooling air adjusting mechanism (6) is arranged on the front wall of the inner holder (5). From the (50) side, it passes through the air introduction hole (48) of the lamp unit (4) and extends into the reflector (41).

  As shown in FIGS. 10 and 11, the cooling air adjustment mechanism (6) is integrally formed with an attachment member (9) for attaching the cooling air adjustment mechanism (6) to the inner holder (5). The wind adjusting mechanism (6) and the attachment member (9) are formed by press forming a metal plate.

  The cooling air adjusting mechanism (6) extends from the base (90) of the attachment member (9). The base part (90) is formed in a flat plate shape and covers the notch part (59) constituting the air introduction hole (56) of the inner holder (5) with the first side wall (51) as shown in FIG. ing. The base (90) of the mounting member (9) is provided with a through hole (97) that exposes the air introduction hole (48) of the lamp unit (4). The opening surface of the through hole (97) is The lamp unit (4) is disposed substantially parallel to the opening surface of the air introduction hole (48).

  The cooling air adjusting mechanism (6) extends from the inner peripheral portion of the through hole (97) of the base portion (90), and the root portion of the cooling air adjusting mechanism (6) extended from the base portion (90) is It arrange | positions at the front wall (50) side of the inner side holder (5).

  As shown in FIG. 11, the cooling air adjusting mechanism (6) is overlapped on the angle adjusting member (60) extended from the base (90) of the mounting member (9) and the angle adjusting member (60). And a length adjusting member (61).

  As shown in FIG. 13, the angle adjusting member (60) includes a flat plate portion (62) extending in a rectangular shape from the base portion (90) of the mounting member (9), and perpendicular to both sides of the flat plate portion (62). 11, the flat plate portion (62) of the angle adjusting member (60) is connected to the base portion (90) of the mounting member (9), as shown in FIG. A pair of side wall portions (63), (63) of the angle adjusting member (60) are inclined at a predetermined angle from the opening surface of the established through hole (97), and the base portion (90) of the attachment member (9) is opened. It extends toward the formed through hole (97).

  As shown in FIG. 14, the length adjusting member (61) superimposed on the angle adjusting member (60) vertically protrudes from the rectangular flat plate portion (64) and both sides of the flat plate portion (64). It is comprised from a pair of side wall part (65) (65). As shown in FIG. 11, the distance between the pair of side wall portions (65) and (65) of the length adjusting member (61) is larger than the distance between the pair of side wall portions (63) and (63) of the angle adjusting member (60). The pair of side wall portions (63) of the angle adjusting member (60) is sandwiched between the pair of side wall portions (63), (63) of the length adjusting member (61). The pair of side wall portions (65), (65) of the length adjusting member (61) is larger than the pair of side wall portions (63) of the angle adjusting member (60), and the pair of side walls of the angle adjusting member (60). The entire outer surface of the portions (63) and (63) is covered with a pair of side wall portions (65) and (65) of the length adjusting member (61).

  Further, the flat plate portion (62) of the angle adjusting member (60) is covered by the flat plate portion (64) of the length adjusting member (61) from the base portion connected to the base portion (90) of the mounting member (9) to the tip portion. It has been broken. Further, the flat plate portion (64) of the length adjusting member (61) protrudes from the tip of the flat plate portion (62) of the angle adjusting member (60) by a predetermined length.

  In such a cooling air adjusting mechanism (6), the flat plate portion (64) of the length adjusting member (61) protrudes from the tip of the flat plate portion (62) of the angle adjusting member (60) by a predetermined length. Further, the flat plate portion (64) of the length adjusting member (61) is positioned with respect to the flat plate portion (62) of the angle adjusting member (60). For the positioning, the angle adjusting member (60) and the length adjusting member (61) are engaged with each other, and the flat plate portion (62) of the angle adjusting member (60) is, as shown in FIG. Two protrusions (67) and (67) which are engaging portions on the length adjusting member side are arranged side by side in the direction (width direction) orthogonal to the length direction, while the flat plate of the length adjusting member (61) As shown in FIG. 17, the part (64) is provided with two through-holes (66) (66) serving as engagement receiving parts on the length adjusting member side by side in the width direction. As shown in FIG. 18, the angle adjusting member (60) and the length adjusting member (61) are joined to each other by spot welding. According to spot welding, the angle adjusting member (60) and the length adjusting member (61) can be easily fixed as compared with the case of using screws or the like.

  In such a cooling air adjustment mechanism (6), the inclination angle with respect to the opening surface of the air introduction hole (48) of the lamp unit (4) is determined by the inclination angle of the angle adjustment member (60), while the cooling air adjustment mechanism The length of the mechanism (6) extending from the air introduction hole (48) of the lamp unit (4) into the reflector is determined by the length of the length adjusting member (61).

  The attachment member (9) formed integrally with the cooling air adjusting mechanism (6) has a front fixing part (91) and a rear fixing part (92) as shown in FIG. The front fixing portion (91) has a belt-like portion (93) extending from the base portion (90) to the outer surface of the front wall (50) of the inner holder (5), and the belt-like portion (93) 15, the cutout portion of the front wall (50) constituting the air introduction hole (56) of the inner holder (5) is covered, and the tip of the belt-like portion (93) is the light emitting hole of the inner holder. It is in close contact with the inner peripheral surface of (54).

  Further, as shown in FIG. 15, the front fixing portion (91) is provided with a pair of insertion portions (94) protruding vertically from both sides in the width direction of the belt-like portion (93), and the insertion portions (94) The inner holder (5) is fitted into the notch (58) of the front wall (50) and is in close contact with the inner peripheral surface of the notch (58). According to such a front fixing portion (91), the end of the belt-like portion (93) is in close contact with the inner peripheral surface of the light emitting hole (54), and the fitting portion (94) is within the notch portion (58). By being in close contact with the peripheral surface, it is fixed to the front wall (50) of the inner holder (5).

  On the other hand, as shown in FIG. 12, the rear fixing portion (92) is provided on the opposite side via the front fixing portion (91) and the base portion (90). The rear fixing portion (92) includes a first holding portion (96) extending from the base portion (90) along the inner surface of the first side wall (51) of the inner holder, and the first holding portion (96). A pair of second clamping parts (95) (95) disposed on both sides and extending from the base part (90) along the outer surface of the first side wall (51) of the inner holder (5), The first side wall (51) of the inner holder is clamped by the first clamping part (96) and the pair of second clamping parts (95) (95).

  The component in which the angle adjusting member (60) and the mounting member (9) of the cooling air adjusting mechanism (6) as described above are integrally formed presses a single flat metal plate as shown in FIG. It is formed by molding. In the metal plate, a portion (98) to be the base portion of the attachment member (9) is formed in an annular shape, and a cooling air adjusting mechanism (6) is provided inside the portion (98) to be the base portion of the attachment member (9). The portion (99) to be the angle adjusting member is disposed.

  In the manufacturing process of the cooling air adjusting mechanism (6), the part (99) to be the angle adjusting member of the cooling air adjusting mechanism (6) is bent from the part (98) to be the base of the mounting member (9), As shown in FIG. 18, an angle adjusting member (60) inclined at a predetermined angle from the base (90) of the mounting member (9) is formed. Thereafter, a length adjusting member (61) made of another metal plate as shown in FIG. 17 is attached to the angle adjusting member (60).

  In such a manufacturing method, as shown in FIG. 19, the extension length of the angle adjusting member (60) depends on the size of the through hole (97) to be opened in the base (90) of the mounting member (9). Limited. However, since the length of the cooling air adjusting mechanism (6) is determined by the length adjusting member (61), the length of the cooling air adjusting mechanism (6) is opened at the base (90) of the mounting member (9). It can be set regardless of the size of the power through hole (97).

  According to the front and rear fixing portions (92) of the attachment member (9) shown in FIG. 12 and FIG. 15, it is cooled without using other parts such as screws by being bent along the wall surface of the inner holder (5). The wind adjusting mechanism (6) can be attached to the inner holder (5), and can also be attached to the inner holder (5) having a different shape.

  As shown in FIGS. 5 and 6, a cooling fan device (8) is disposed outside the inner holder (5). The cooling fan device (8) includes a fan (83) that generates an air flow, a duct (81) that serves as a passage for the air flow generated by the fan (83), and an air flow that has passed through the duct (81). A discharge port (82) for discharging to the outside is provided.

  The discharge port (82) of such a cooling fan device (8) is arranged toward the air introduction hole (56) of the inner holder (5). From the cooling fan device (8), an air flow (cooling air) is discharged toward the air introduction hole (56) of the inner holder (5), and the cooling air is supplied to the air introduction hole (48) of the lamp unit (4). And the cooling air adjusting mechanism (6) are introduced into the reflector (41).

  Between the air introduction hole (48) of the lamp unit (4) and the cooling air adjustment mechanism (6), the cooling air flows along the direction (length direction) in which the cooling air adjustment mechanism (6) extends. As shown in FIG. 10, the cooling air adjusting mechanism (6) is provided with a pair of side wall portions (65) and (65) on both sides in the direction orthogonal to the length direction, so that the cooling air is Dispersion outside the cooling air adjusting mechanism (6) is suppressed.

  The cooling air discharged from the cooling air adjusting mechanism (6) is concentrated at the position of the spherical portion (43) which is the heat source of the arc tube (42) shown in FIG. The inclination angle and the length of the cooling air adjusting mechanism (6) capable of concentrating the cooling air at the position of the spherical portion (43) of the arc tube (42) are determined by the spherical portion of the arc tube (42) with respect to the air introduction hole ( 43) and the speed of the cooling air, etc., but can be determined when designing the projector apparatus.

  Since the cooling air takes heat from the arc tube (42) and cools the arc tube (42), it becomes warm air after the arc tube (42) is cooled. The warm air is discharged to the outside of the lamp unit (4) through the air discharge hole (49) of the lamp unit (4) and the air discharge hole (57) of the inner holder (5). The warm air discharged to the outside passes through the exhaust hole (55) provided in the third side wall (53) of the inner holder (5) and the exhaust hole (15) of the casing to the outside of the casing (1). Discharged.

  20 to 22, the lamp unit (4) having a different inclination angle of the cooling air adjusting mechanism (6) and the flow of the cooling air in each lamp unit (4) are schematically shown by arrows. In these lamp units (4), the length L of the cooling air adjusting mechanism (6) is 12 mm, and the speed of the cooling air introduced from the cooling fan device (8) is the same. In the lamp unit (4) shown in FIG. 20, the inclination angle θ of the cooling air adjusting mechanism (6) is 150 °, and in the lamp unit (4), the cooling air flows into the spherical portion (43) of the arc tube (42). Concentrate on the position. On the other hand, in the lamp unit shown in FIGS. 21 and 22, the inclination angle θ of the cooling air adjusting mechanism (6) is 120 ° and 135 °, respectively. In the lamp unit (4), the cooling air is supplied to the arc tube (42). ) Cannot be concentrated at the position of the spherical part (43).

  23 and 24, the lamp unit (4) having a different length of the cooling air adjusting mechanism (6) and the flow of the cooling air in each lamp unit (4) are schematically shown by arrows. In these lamp units (4), the inclination angle θ of the cooling air adjusting mechanism (6) is 135 °, and the speed of the cooling air introduced from the cooling fan device (8) is the same. In the lamp unit (4) shown in FIG. 23, the length L of the cooling air adjusting mechanism (6) is 25 mm, and in this lamp unit, the cooling air is concentrated at the position of the spherical portion (43) of the arc tube (42). is doing. On the other hand, in the lamp unit shown in FIG. 24, the length L of the cooling air adjusting mechanism (6) is 18 mm, and in this lamp unit, the cooling air is concentrated at the position of the spherical portion (43) of the arc tube (42). I can't let you.

As described above, in order to concentrate the cooling air at the position of the spherical portion (43) of the arc tube (42), it is necessary to set the inclination angle and the length of the cooling air adjusting mechanism (6) to optimum values. is there.
In the projector apparatus as described above, the angle adjusting member (60) corresponding to the optimum angle of the cooling air adjusting mechanism (6) determined in the design stage is selected, and the optimum length of the cooling air adjusting mechanism (6) is supported. Select the length adjustment member (61) to be used, and combine the angle adjustment member (60) with the optimum angle and the length adjustment member (61) with the optimum length to circulate the cooling air into the spherical portion (43) of the arc tube (42). You can concentrate on the position.

  In the manufacturing process of such a projector, if the angle adjustment member (60) of various angles and the length adjustment member (61) of various lengths are prepared in advance, the cooling air adjustment dedicated for each model is provided. It is not necessary to prepare a mechanism, and it is possible to quickly cope with different models.

In addition, each part structure of this invention is not restricted to the said embodiment, A various deformation | transformation is possible within the technical scope as described in a claim.
For example, the position where the cooling air is concentrated is not limited to the spherical portion (43) of the arc tube (42), and may be another portion to be cooled. Further, in the cooling air adjusting mechanism (6), it is not necessary that the entire surface of the angle adjusting member (60) is covered with the length adjusting member (61), and the length is only on the tip side of the angle adjusting member (60). A configuration in which the adjusting member (61) is attached can also be adopted.

1 is an overall perspective view of a projector apparatus according to the present invention. It is a rear view of the projector apparatus shown in FIG. It is a top view which shows arrangement | positioning of the lamp unit with which the projector is equipped, and an optical unit. It is a top view which shows the structure of the lamp unit with which the projector is equipped, and an optical unit. It is the perspective view which looked at the lamp unit accommodated in the inner side holder from the downward direction. It is the perspective view which looked at the lamp unit accommodated in the inner side holder from upper direction. It is a perspective view of an inner holder. It is a front view of an inner holder. It is a bottom view of an inner holder. It is the perspective view which looked at the cooling air adjustment mechanism and the attachment member from the upper part. It is the perspective view which looked at the cooling air adjustment mechanism and the attachment member from the downward direction. It is a side view of a cooling air adjustment mechanism and an attachment member. It is the top view which looked at the cooling air adjustment mechanism and the attachment member from the one surface side. It is the reverse view which looked at the cooling air adjustment mechanism and the attachment member from the other surface side. It is a rear view of a cooling air adjustment mechanism and an attachment member. It is a perspective view of the angle adjustment member and attachment member of a cooling air adjustment mechanism. It is a perspective view of the length adjustment member of a cooling air adjustment mechanism. It is the perspective view which looked at the cooling air adjustment mechanism and the attachment member from the upper part. It is a top view of the metal plate used as a cooling air adjustment mechanism and an attachment member. It is a figure which shows the flow of a cooling wind in case the inclination-angle of a cooling wind adjustment mechanism is 150 degrees and length is 12 mm. It is a figure which shows the flow of a cooling wind in case the inclination-angle of a cooling wind adjustment mechanism is 120 degrees and length is 12 mm. It is a figure which shows the flow of a cooling wind in case the inclination-angle of a cooling wind adjustment mechanism is 135 degrees and length is 12 mm. It is a figure which shows the flow of a cooling wind in case the inclination-angle of a cooling wind adjustment mechanism is 135 degrees and length is 25 mm. It is a figure which shows the flow of a cooling wind in case the inclination-angle of a cooling wind adjustment mechanism is 135 degrees and length is 18 mm. It is a figure which shows the flow of the cooling air in the lamp unit of the conventional projector apparatus. It is a figure which shows the flow of the cooling air in the lamp unit of the other conventional projector apparatus.

Explanation of symbols

(1) Casing
(4) Lamp unit
(41) Reflector
(42) arc tube
(43) Spherical part
(48) Air introduction hole
(5) Inner holder
(50) Front wall
(51) 1st side wall
(54) Light exit hole
(56) Air introduction hole
(6) Cooling air adjustment mechanism
(60) Angle adjustment member
(61) Length adjustment member
(62) (64) Flat plate
(63) (65) Side wall
(66) (67) Engagement part
(9) Mounting member
(90) Base
(97) Through hole

Claims (5)

The lamp unit (4), the cooling fan device (8) for cooling the lamp unit (4), and the lamp unit (4) as a light source generate image light, and project the generated image light toward the screen. The lamp unit (4) includes an arc tube (42) and the arc tube (42), and reflects the light emitted from the arc tube (42) toward the optical system. A projector having a reflector (41), wherein the lamp unit (4) has an air introduction hole (48) for introducing the air discharged from the cooling fan device (8) into the reflector (41). In the device
The air introduction hole (48) of the lamp unit (4) is provided with a cooling air adjustment mechanism (6) for adjusting the flow of the cooling air introduced into the reflector (41), and the cooling air adjustment mechanism (6 ) Is protruded at a predetermined angle toward the arc tube (42) of the lamp unit (4), and is connected to the angle adjustment member (60) to emit light from the lamp unit (4). A projector device comprising a length adjusting member (61) projecting with a predetermined length toward the tube (42).   The projector device according to claim 1, wherein the angle adjusting member (60) and the length adjusting member (61) are both made of sheet metal and connected to each other by welding.   The engagement portion and the engagement receiving portion for defining the relative position of each other are formed in the angle adjustment member (60) and the length adjustment member (61), respectively. Projector device.   The length adjusting member (61) includes a flat plate portion (64) protruding from the air introduction hole (48) of the lamp unit (4) toward the center of the reflector (41), and a flat plate portion (64). The projector device according to any one of claims 1 to 3, wherein a pair of side wall portions (65) and (65) projecting substantially vertically on both sides are formed.   A holder (5) for housing the lamp unit (4) is provided. The holder (5) has an air introduction hole (56) communicating with the air introduction hole (48) of the lamp unit (4). The angle adjustment member (60) is integrally formed with a sheet metal attachment member (9) for attaching the cooling air adjustment mechanism (6) to the holder (5), and is attached to the attachment member (9). The projector device according to any one of claims 1 to 4, wherein a bent portion that is detachably engaged with an end portion of the holder (5) is formed.

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