JP2018031936A - Projection type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which: in projecting a portrait, rotating a projector by 90° with respect to a projection lens axis turns a lamp axis in the vertical direction and significantly reduces its life.SOLUTION: A projection type display device can change a lamp unit to one having a lamp axis remaining horizontal even when a projector is rotated by 90° with respect to a projection lens axis.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a projection type image display apparatus having a high-pressure mercury lamp such as a projector.

  Recently, projectors have begun to be used in various places such as advertising and amusement shows. Until now, most of them have been placed on a desk or suspended from a ceiling, but there is a method called portrait projection. This is a method of projecting a vertically long image without impairing the image quality, and is generally called portrait projection because a vertically long photographic image is projected as it is.

JP 2012-3257

  In the stationary posture, the lamp optical axis is in a horizontal state, and in the ceiling suspension posture, the top and bottom are reversed, but the lamp optical axis is in a horizontal state. The upward and downward directions also depend on the optical system, but the lamp optical axis is horizontal. There is no problem when the lamp optical axis is horizontal, but in the case of portrait projection as described above, the projector main body is rotated by 90 ° with respect to the projection lens optical axis. In this state, depending on the optical system, there is a problem that in most cases, the lamp optical axis is oriented in the vertical direction, and the lamp life is significantly shortened.

  Portrait projection is a usage method that should be avoided as much as possible in general projectors due to the above-mentioned problems, but some users are prepared to shorten the lamp life. This problem does not occur in projectors that use LEDs or lasers that do not rely on electrodes and arc discharge as light sources, but it is difficult to meet the required environmental conditions of the show due to lack of brightness.

  In Patent Document 1, two lamps are mounted. These two lamps are arranged so that the lamp optical axes are orthogonal to each other, and are switched between normal use and portrait. However, in the above-mentioned conventional example, both the general use user and the portrait use user have an extra lamp which is unnecessary, so that there is a problem that the apparatus becomes large and expensive. there were.

  A lamp unit in which the lamp shaft is rotated 90 ° with respect to the rotation center axis of the lamp reflector is prepared as a replacement lamp.

  According to the present invention, stationary, ceiling-mounted, upward, and downward normal use can be performed, and by simply replacing the lamp unit, it is possible to avoid the increase in size and cost of the apparatus and to perform portrait projection with a long service life. Can do.

External view of lamp unit Exploded view of the lamp unit External view of the lamp Exploded view of the lamp (front and back) Exploded view of the lamp (up and down) Projector device external view Diagram showing the inside of the projector device Figure showing the inside of the projector and the lamp bulb exposed (stationary projection) Figure showing the inside of the projector and the lamp bulb exposed (portrait projection) A diagram showing the normal projection state when stationary Diagram showing portrait projection status

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an external view showing a lamp unit according to an embodiment of the present invention. Reference numeral 1 denotes a light source lamp which can realize high luminance such as an ultra-high pressure mercury lamp. 2 is an explosion-proof glass for preventing optical scattering and bulb scattering when the lamp bursts. 3 is a holder for holding 1 lamp and 2 explosion-proof glass. 4 is an explosion-proof glass presser spring for fixing 2 explosion-proof glass to the 3 holder. Reference numeral 5 denotes a lamp presser spring for fixing the lamp 1 to the holder 3. 6 is a cord which is an electric terminal wire of the lamp. A connector 7 is connected to the cord 6 and is fixed to the holder 3.

[Example 1]
The first embodiment will be described with reference to FIGS. 2 to 4 and FIGS. 6 to 11. FIG. 2 shows an exploded state of the lamp unit of FIG. Although one lamp is a form which is a feature of the present invention, the other components are not different from the structure of a general lamp unit. FIG. 3 is a diagram of a lamp which is a feature of the present invention. One lamp is composed of a 1R reflector and a 1V bulb. The lamp axis of the bulb is arranged perpendicular to the optical optical axis direction of the 1R reflector. The lamp shaft is a direction connecting the cathode and the anode in the bulb, and is a direction in which the rod-like portion extending from the bulb sphere extends.

  The optical optical axis direction of the reflector is a direction in which light from an arc emitted from one bulb travels. The reflector has a shape of a reflecting surface rotated with respect to the center line, and this center line is in the optical optical axis direction. FIG. 4 shows a state in which one lamp is further disassembled. In order to put the electrode terminal from the 1V bulb out of the 1R reflector and to fix and fix 1V to the 1R reflector, there is a hole in the 1R reflector and the 1V It is necessary to penetrate, and this is shown in FIG. The 1V valve is sandwiched and fixed by being divided into a 1RF reflector front and a 1RR reflector rear. Thus, the valve can be included by dividing the reflector into two parts.

  FIG. 6 is a diagram showing the entire projector apparatus, and 8 is a projection lens. 9 is a cover top and 10 is a cover bottom. FIG. 7 shows a state in which the cover top of FIGS. 6 to 9 is removed, and only the components necessary for explaining the present invention are extracted and shown. Originally, various components such as a power source, a ballast, a signal board, a cooling fan, and a harness are included but omitted. Reference numeral 11 denotes an optical engine for dispersing light emitted from the light source 1 and synthesizing it again through an image forming element such as a liquid crystal panel (not shown). The light emitted from 11 optical engines is magnified by 8 projection lenses and projected onto the screen.

  FIG. 8 is a view in which the reflector of 1R is partially removed from FIGS. 7A and 7B, and shows that the lamp shaft is horizontal in the stationary state. When the bottom side of the paper is the bottom, the bottom is parallel to the floor and the lamp axis is also parallel to the floor, that is, the lamp axis is horizontal.

  Here, FIG. 10 shows a general stationary state. This is a state where a wide surface is placed on a desk or the like so as to be a bottom surface. In this state, a general landscape image is projected, which is a general projection state. On the other hand, FIG. 11 is a diagram showing portrait projection, in which the projector main body is rotated by 90 ° about the optical axis of the projection lens. As a result, the projected image also becomes vertically long, and a so-called portrait image taken centering on one subject in photography is projected as it is. It is also in a state where the narrow surface of the short side of the device is the bottom surface. FIG. 9 is a diagram when the stationary state of FIG. 8 is set to the portrait state. Even in this state, the 1V bulb is parallel to the ground, indicating that the lamp axis is horizontal.

  Thus, in the lamp unit of the present invention, it can be seen that the lamp axis is horizontal even when the projector body is rotated about the optical axis of the projection lens. By replacing the lamp unit with a lamp unit having a bulb parallel to the optical optical axis of a normal reflector, it is possible to return to the normal lamp unit state.

  Although not shown, the lamp unit is equipped with an IC memory and ROM so that it can be determined whether it is a normal lamp unit or a portrait-compatible lamp unit. There is also a means for discriminating whether the device is compatible with the portrait or the portrait and automatically changes the cooling conditions. As a result, optimum cooling conditions can be achieved even in the portrait state, so that a longer life can be realized.

[Example 2]
FIG. 5 is a diagram showing another embodiment. Reference numeral 5 denotes a valve similar to that in the first embodiment. 1RT is a reflector top in the upper part of the reflector divided vertically. 1RB is a reflector bottom in the lower part of the reflector divided vertically. By dividing the reflector in this way, the valve can be included.

  The difference between the first embodiment and the second embodiment is the difference in the dividing method of the reflector, but other methods may be used as long as the valve can be included in the reflector. However, the lamp axis of this bulb is arranged perpendicular to the optical optical axis direction of the reflector.

1, lamp
2, explosion-proof glass
3, holder
4, explosion-proof glass presser spring
5, lamp presser spring
6, code
7, connector
8, projection lens
9, cover top
10, cover bottom
11, optical engine

Claims (7)

A light source comprising a light emitting part, a reflecting part, a light emitting part and a reflecting part;
In a projection display device with a replaceable light source,
A projection-type display device that can be exchanged for a light source unit in which a light emitting axis of a light source is arranged in a direction orthogonal to the optical optical axis direction of the reflecting section. In claim 1,
2. A projection type display device characterized in that the reflection section is divided into two bodies. In claim 2,
A projection type display device characterized in that the reflection part is divided into two in the front and rear. In claim 2,
A projection display device characterized in that the light emitting section is divided into two bodies in the upper and lower directions. 2. A projection type display apparatus according to claim 1, wherein means for notifying the direction of the light emission axis of the light source is provided in the light source. 6. The projection type display device according to claim 5, wherein the means for notifying the direction of the light emitting axis is a telecommunication system.   6. The projection display device according to claim 5, wherein the cooling condition of the light source is changed based on information from the means for notifying the direction of the light emission axis of the light source.