JP2003021867A - Projector device with lamp mounting angle adjustment mechanism - Google Patents

Abstract

(57) Abstract: Provided is a projector device capable of simplifying angle adjustment of a light source lamp by enabling angle adjustment of a light source lamp without removing a lamp holder from a lamp unit main body. A light source lamp (5) is attached to a lamp holder (3) by a mounting angle adjusting mechanism (4) so as to be rotatable in an elevation direction around a rotation shaft (6) and to be able to rotate horizontally in a rotation direction around a rotation shaft (9). Have been. The elevation angle of the light source lamp 5 can be adjusted by adjusting the amount of screwing of the holding portion 8 into the screw hole 8 a by the angle adjusting screw 7, and the angle adjusting screw 7 is connected to the guide groove 1.
By sliding along 0, the angle in the horizontal direction can be adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector device such as a liquid crystal projector provided with a light source lamp, and more particularly to a lamp mounting angle adjusting mechanism capable of adjusting the angle of the light source lamp in a state where the light source lamp is incorporated in the lamp unit. The present invention relates to a projector device.

[0002]

2. Description of the Related Art Conventionally, a projector device such as a liquid crystal projector has been widely spread as one of image display devices. As is well known, this type of projector device is configured by mounting a lamp unit equipped with a light source lamp in a set main body, and outputs a light flux from the light source lamp to RGB.
The liquid crystal panel provided for each is irradiated, and the liquid crystal panel is modulated by a video signal to emit the image light of each color, and the emitted light is enlarged and emitted through the projection lens.

However, if the light source lamps used in the projector apparatus having the above-mentioned structure have variations in alignment, color unevenness will occur in the projected image. For this reason, highly accurate adjustment work is required to attach the light source lamp. Further, when the brightness of the light source lamp decreases due to the life of the lamp, the lamp needs to be replaced. However, if the lamp mounting position is displaced after the replacement, color unevenness may occur in the projected image.

On the other hand, the conventional projector apparatus has a structure in which the light source lamp is held in the lamp holder and mounted in the lamp unit. Therefore, when the lamp is mounted, the lamp is assembled in the lamp holder, and then the set body is mounted. I was trying to put it on. For this reason, if there is color unevenness in the projected image after mounting on the set body, it is necessary to take it out again and adjust the mounting angle, and as a result, position adjustment work at the time of lamp installation or lamp replacement is complicated. If the mounting position or angle of the light source lamp deviates from an appropriate value, color unevenness or the like will occur, and the quality of the projector device will be degraded.

Further, as a prior art, a projector device described in, for example, Japanese Patent Application Laid-Open No. 11-133507 has been proposed in order to easily remove color unevenness due to a light source lamp. In this proposal, the spring provided on the lamp pressing plate biases the lamp holder rotatably from the back side,
Although the angle of the light source lamp can be adjusted to some extent,
To perform highly accurate angle adjustment, increase the number of parts,
Since the structural improvement is required, the above problems have not been solved yet.

[0006]

As described above, in the conventional projector device, highly accurate adjustment work is required to attach the light source lamp, and when the projection image has color unevenness after being attached to the set main body, , It was necessary to take it out again and adjust the position. Also, when the light source lamp is replaced, high-precision mounting work is required, and the position adjustment work during lamp mounting or lamp replacement becomes complicated, and the mounting position or angle of the light source lamp deviates from an appropriate value. Causes color unevenness and the like, leading to deterioration in display quality of the projected image.

Further, even in the structure described in Japanese Patent Laid-Open No. 11-133507, the angle of the light source lamp can be adjusted to some extent, but high-precision adjustment cannot be expected, and the above problems cannot be solved.

The present invention has been made in view of the above problems, and enables the angle of the light source lamp to be adjusted accurately with the light source lamp attached to the lamp unit body, and the angle adjustment work associated with the replacement of the light source lamp can be simplified. It is an object of the present invention to provide a projector device with a lamp mounting angle adjusting mechanism, which is capable of achieving high speed and time reduction, and which can surely prevent color unevenness of a projected image.

[0009]

In a projector device with a lamp mounting angle adjusting mechanism of the present invention, a light source lamp and a vertical direction of the light source lamp are provided via two rotary shafts orthogonal to the optical axis of the light source lamp. And a lamp holder that rotatably holds in a horizontal direction, a lamp cover that covers the lamp holder, a lamp unit that includes the lamp holder and the lamp cover, and the light source lamp at the two locations. And an attachment angle adjusting means for adjusting the attachment angle with respect to the lamp holder by rotating in a vertical direction and a horizontal direction via a rotating shaft.

According to the present invention, the light source lamp is
The light source lamp can be freely rotated in vertical and horizontal directions via a rotating shaft at a certain position, and the angle of the light source lamp can be arbitrarily adjusted by the mounting angle adjusting means without removing the lamp holder from the lamp unit. .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of a projector device with a lamp mounting angle adjusting mechanism according to the present invention, and FIG. 1 (a) is a sectional view of the device seen from the side, FIG.
2B is a perspective view illustrating the configuration of the angle adjusting mechanism in the elevation angle direction, FIG. 2A is a bottom view of the apparatus seen from the bottom, and FIG.
(B) is a perspective view for explaining the structure of the horizontal angle adjusting mechanism, FIG. 3 is an explanatory view for explaining a state in which the lamp is angled downward (elevation direction), and FIG. 4 is for horizontally adjusting the angle of the lamp. It is explanatory drawing explaining a state.

In order to achieve the above object, the projector apparatus 1 with a lamp mounting angle adjusting mechanism of the present embodiment is
The feature is that the mounting position of the light source lamp can be adjusted with high accuracy without removing the lamp unit from the set body.

That is, as shown in FIG. 1A, the present invention is
The lamp unit 2 is mainly characterized by having a light source lamp 5, a lamp holder 3 for mounting the light source lamp 5, and a lamp cover 2A for covering the lamp holder 3 and the light source lamp 5. In addition, it further includes a mounting angle adjusting mechanism 4 for the light source lamp 5.

The lamp cover 2A covers the lamp holder 3 on which the light source lamp 5 is mounted so as to cover it, and is fixed to the lamp holder 3.

The lamp holder 3 mounts the light source lamp 5 via the lamp mounting adjusting mechanism 4, and the lamp mounting adjusting mechanism 4 mounts the light source lamp 5 in the vertical direction (hereinafter referred to as the elevation angle direction) and the horizontal direction. It is to be rotatable. The lamp holder 3 has a bottom surface portion 3A that holds the light source lamp 5 on its upper surface, and a front surface portion 3a that stands upright from the bottom surface portion 3A (see FIG. 1B).

Next, a specific structure of the mounting angle adjusting mechanism 4 will be described. The mounting angle adjusting mechanism 4 is shown in FIG.
As shown in FIG. 2A, a cover portion 4A that covers the light source lamp 5 itself, a holding portion 8 provided at the rear end portion of the cover portion 4A (on the rear end side of the light source lamp 5), and this holding portion One end is attached to the portion 8, and the other end has an angle adjusting screw 7 protruding through the bottom surface 3A of the lamp holder 3. Further, the cover portion 4A is attached to a side surface portion of the lamp holder 3 (see FIG. 1B) so as to be rotatable in an elevation angle direction, and a pin 6A serving as a rotation shaft 6 at the time of rotation in the elevation angle direction, Attach the cover 4A to the bottom surface 3 of the lamp holder 3.
A (see FIG. 2 (b)) is rotatably mounted in the horizontal direction, and the rotary shaft 9 (FIG.
(See (a)). Note that, in FIGS. 1B and 2B, the lamp cover 2A and the cover portion 4A are removed and shown.

In the present invention, the mounting angle adjusting mechanism 4 in the elevation angle direction of the light source lamp 5 has the angle adjusting screw 7 attached to the bottom surface 3A of the lamp holder 3 as shown in FIG. 1 (a).
The holding portion 8 is fitted through the guide groove 10 provided at the predetermined position, and the tip of the screw 7 is screwed into the screw hole 8a.

On the other hand, regarding the front side of the light source lamp 5,
As shown in FIG. 1B, a hole 3b into which the pin 6A serving as the rotating shaft 6 is inserted is provided on the side surface of the lamp holder front face portion 3a, and the pin 6A is inserted into this hole 3b. The cover portion 4A is pivotally supported. That is,
As shown in FIG. 1A, the cover portion 4a is formed by the pin 6A.
Is rotatably supported on the side surface of the lamp holder 3, so that the light source lamp 5 can be rotated about the rotation axis 6 in the elevation angle direction.

Therefore, as shown in FIG. 1 (a), if the angle adjusting screw 7 is adjusted to adjust the screwing amount of the holding portion 8 into the screw hole 8a, the light source lamp 5 itself is rotated about the rotating shaft 6. Thus, it becomes possible to adjust the angle by a predetermined amount of elevation angle (α elevation angle or θ elevation angle shown in the figure).

Next, the structure of the mounting angle adjusting mechanism 4 of the light source lamp 5 in the horizontal direction will be described with reference to FIG. Figure 2
In (a), a guide groove 10 into which an angle adjusting screw 7 is fitted is provided at a predetermined position of the bottom surface portion 3A of the lamp holder 3, and the guide groove 10 is provided on the optical axis of the light source lamp 5. It is formed in an R shape in accordance with a turning operation of turning the turning shaft 9 in the horizontal direction. That is, by guiding the angle adjusting screw 7 along the R shape of the guide groove 10, the light source lamp 5 can be horizontally rotated together with the cover portion 4A.

On the front side of the light source lamp 5,
As shown in FIG. 2B, a hole 3c is provided on the bottom surface of the front surface portion 3a of the lamp holder 3 so as to be aligned with the horizontal rotation shaft 9 of the light source lamp 5. A pin 9A is fitted in the hole 3c, and the pin 9A is pivotally supported on the bottom surface (not shown) of the cover portion 4A that covers the light source lamp 5.

In this way, as shown in FIG. 2A, the cover portion 4a is pivotally supported on the bottom surface of the lamp holder 3 by the pin 9A, so that the light source lamp 5 rotates about the horizontal rotating shaft 9. Become mobile.

Therefore, the light source lamp 5 is shown in FIG.
As shown in FIG. 5, if the angle adjusting screw 7 is slid along the guide groove 10 and adjusted, the light source lamp 5 is rotated about the rotating shaft 9 by a predetermined horizontal angle (α horizontal angle shown in FIG. θ horizontal angle).

FIG. 3 shows an example in which the light source lamp 5 is adjusted in the elevation direction. The rear end portion of the light source lamp 5 is slightly lifted and rotated in the α direction, and the front end portion is made slightly downward. It shows the state.

FIG. 4 shows an example in which the light source lamp 5 is adjusted in the horizontal direction, and shows a state in which the rear end portion of the light source lamp 5 is rotated along the guide groove 10 in the θ direction. There is.

As described above, in the projector device 1 of the present invention, when the light source lamp 5 has a variation in alignment and color unevenness occurs in the projected image, the adjustment screw 7 is screwed in and the rotation amount along the guide groove 10 is adjusted. By adjusting, the elevation angle and the horizontal angle of the light source lamp 5 can be arbitrarily adjusted, and color unevenness can be corrected.

Further, since the angle of the light source lamp 5 can be adjusted in a state where it is attached to the lamp unit 2, when a color unevenness occurs in the projected image or when the lamp is replaced, the color unevenness occurs when the lamp holder 3 is attached to the lamp unit 2. The projection angle from the light source lamp 5 can be arbitrarily adjusted by adjusting the screw 7 so as to minimize the occurrence degree of.

As described above, according to the present embodiment, since the mounting angle adjusting mechanism 4 for the light source lamp 5 is provided, the lamp holder 3 does not have to be removed from the lamp unit 2 with high accuracy and is simple. Since it is possible to adjust the mounting angle of the light source lamp 5, the adjustment work becomes easy,
Also, the adjustment time can be greatly reduced. Accordingly, it is possible to easily prevent the occurrence of color unevenness, and it is possible to realize a high quality and high quality projector device. It should be noted that the present invention is not limited to the above embodiment, and various modifications can be considered.

[0030]

As described above, according to the present invention, the projection angle of the light from the light source lamp can be adjusted with high accuracy without removing the lamp holder from the lamp unit main body.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a projector device with a lamp mounting angle adjusting mechanism according to an embodiment of the present invention as seen from a side surface.

FIG. 2 is an explanatory diagram of the device shown in FIG. 1 when viewed from the bottom.

FIG. 3 is an explanatory diagram showing a state in which a light source lamp is angle-adjusted in an elevation direction.

FIG. 4 is an explanatory diagram showing a state in which a light source lamp is horizontally adjusted in angle.

[Explanation of symbols]

1 ... Projector device with lamp mounting angle adjustment mechanism, 2 ... Lamp unit, 2A ... Lamp cover, 3 ... Lamp holder, 3A ... bottom part, 3B ... opening, 4 ... Mounting angle adjustment mechanism, 4A ... cover part, 5 ... Light source lamp, 6 ... Rotation axis (elevation angle), 6A ... pin, 7… Adjusting screw, 8 ... holding part, 8a ... screw holes, 9 ... Rotation axis (horizontal angle), 9A ... pin, 10 ... Guide groove.

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03B 21/14 F21M 1/00 T // F21Y 101: 00

Claims (3)

[Claims] 1. A light source lamp, a lamp holder for rotatably holding the light source lamp in vertical and horizontal directions via two rotary shafts orthogonal to the optical axis of the light source lamp, and the lamp holder. A lamp cover that covers the lamp, a lamp unit that includes the lamp holder and the lamp cover, and the light source lamp that is rotated in the vertical and horizontal directions via the two rotation shafts. A projector device with a lamp mounting angle adjusting mechanism, comprising: mounting angle adjusting means for adjusting a mounting angle with respect to a lamp holder. 2. The lamp holder pivotally supports the light source lamp in a vertical direction and a horizontal direction by pivotally supporting two vertical and horizontal positions orthogonal to the optical axis of the front surface of the light source lamp as pivotal shafts. The mounting angle adjusting means has a screw holding portion for screwing the adjusting screw and the adjusting screw provided on the rear portion of the light source lamp, and a guide groove provided on the bottom surface of the lamp holder. The light source by adjusting the mounting angle of the light source lamp in the elevation direction by adjusting the screwing amount of the adjusting screw into the screw holding portion, and adjusting the sliding amount of the adjusting screw with respect to the guide groove. The projector device with a lamp mounting angle adjusting mechanism according to claim 1, wherein the mounting angle of the lamp in the horizontal direction is adjustable. 3. The lamp mounting angle adjusting mechanism according to claim 2, wherein the guide groove is formed in an R shape around a rotation axis when the light source lamp is horizontally rotated. Projector device.