JPH0528863Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a rear projection screen type integrated video projector.

[Conventional technology]

Conventionally, all-in-one video projectors have been commercially available in sizes ranging from 36 inches to 50 inches, and generally consist of a box-shaped cabinet 1, a screen 2, a reflector 2, a projection unit 4, and a chassis, as shown in Figure 3. etc. are installed. In addition, four casters 5 are normally attached to the bottom surface so that it can be moved, so that it can be moved to the user's desired position in the room.

[Problem that the invention attempts to solve]

In recent years, the screen size of video projectors has become larger and larger, with screens as large as 50 inches now appearing on the market. There seems to be a trend toward even larger screens, but as the screen gets larger, the reflecting mirror will naturally also get bigger, and as a result, the cabinet becomes larger and weighs more, making it easier for the cabinet to bend. On the other hand, the floor of a building is not flat at all, and when a large video projector is installed on a floor that is not flat,
The cabinet flexes or distorts in line with the distortion of the floor, causing distortion in the projection optical system and making it impossible to obtain a normal image.Also, if a door is provided in front of the screen, the left and right doors may not be aligned properly. The problem arises that it does not fit in the correct position, making it unsightly.

This idea was made to solve this problem, and when the video projector is installed in a location of the user's preference, the video projector can be adjusted to a normal state even if the floor is distorted. The purpose is to obtain.

(Means for Solving the Problems) The video projector according to this invention has a parallel gap between the end face of the cabinet and the end face of the front design structural component so that the degree of distortion can be easily identified from the front face. In addition, a height adjustment adjuster is provided on the bottom of the cabinet.

[Effect]

The video projector according to this invention has a means for easily identifying the degree of distortion from the front, so that when it is installed it can be installed in the same condition as when it was manufactured, that is, the projection optical system is not distorted and the image is not distorted. Easy to install.

〔Example〕

FIG. 1 shows an embodiment of this invention, in which four casters 5 are attached to the bottom of a video projector cabinet 1, and a height adjustment device (adjuster) 6 is installed near the front two of them. installed. The shaft of this adjuster 6 is a screw, and the height can be changed by rotating the shaft with a spanner. Note that the adjuster 6 is adjusted to a higher position than the caster 5 so as not to impair the function of the caster. Reference numeral 7 denotes a door as a design structural component provided in front of the screen 2, and a parallel gap g is provided between the upper end surface 7a of the door and the upper end surface 1a of the cabinet 1 as a means for identifying the degree of distortion. . Such a video projector is manufactured by being installed on a flat surface, and in this state, the projection optical system is properly adjusted, and the door 7 is also adjusted so that the left and right sides are aligned.

When the machine is next installed at the user's location, if the floor is warped, one of the casters will always be lifted off the floor. This is because the three points are always included in the plane. Also, the floating casters can be concentrated on one of the two front wheels. This is because if you lift the caster at the opposite corner of the floating caster, the first caster that floated will touch the floor and be supported at three points.

As shown in FIG. 2, if the cabinet 1 is distorted along the floor, the floating of the caster will become smaller or disappear altogether, but at this time, the left and right positions of the door will no longer match, and the cabinet 1 and door 7 will be distorted.
The distortion can be easily identified by the difference between the gaps g ₁ and g ₂ on both sides. Therefore, the installer can install the door in the same condition as when it was manufactured by extending the adjuster on the bottom of the door and adjusting it until the left and right sides of the door are aligned.

[Effect of idea]

As described above, according to this invention, it is possible to extremely easily install an increasingly large video projector in the correct state at the time of manufacture.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of this invention, FIG. 2 is a front view showing the cabinet in a distorted state,
FIG. 3 is a perspective view showing a conventional video projector. In the figure, 1 is the cabinet, 2 is the screen, and 5
is the caster, 6 is the adjuster, and 7 is the door.
Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims for Utility Model Registration] (1) In a rear projection screen type integrated video projector, a design structure that allows the degree of distortion of the cabinet to be easily identified from the front, and a means that allows the distortion to be recognized through parallel gaps. A video projector characterized in that a height adjusting device (adjuster) is provided near at least two of the four casters provided on the bottom of the cabinet. (2) The video projector according to claim (1) of the utility model registration, in which an adjuster is arranged near the two front casters.