JPH07113996A - Liquid crystal projector - Google Patents

Abstract

PURPOSE:To house a liquid crystal projector and a reproducing device such as a VCR, etc., in the same cabinet and to dissolve a problem related to attaching positions of respective units occurring at the time. CONSTITUTION:The VCR 4 is arranged on the bottom part of the liquid crystal projector so that the operation pannel of the VCR 4 is placed on the rear surface of the liquid crystal projector. Then, a projecting lens 1 and a handle 3 are arranged in the front of the liquid crystal projector, and an optical unit 6 incorporating a liquid crystal pannel 6A is arranged on the rear part of the projecting lens 1. Further, a light source unit 5 incorporating a light source 5A such as a metal halide lamp, etc., is arranged on the rear part of the optical unit 6, and a cooling fan 7 is arranged between the optical unit 6 and the rear surface of the liquid crystal projector, and the light source 5A and the liquid crystal pannel 6A are cooled. Thus, a beam from the light source 5A is light modulated by the liquid crystal pannel 6A based on a regenerative signal from the VCR 4, and thereafter, is enlarged and displayed through the projecting lens 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal projector which uses a liquid crystal panel and enlarges and projects by a projection lens to display a large screen.

[0002]

2. Description of the Related Art Conventionally, a liquid crystal projector is constructed as shown in FIG.

FIG. 6 is a perspective view of a conventional liquid crystal projector.

In FIG. 6, a projection lens 1 for enlarging and displaying on a screen and a speaker 2 are provided on the front surface of the liquid crystal projector, and a handle 3 for the user to move the liquid crystal projector is provided on the upper surface thereof. Is attached.

Further, a light source unit (not shown) composed of a metal halide lamp or the like is arranged at the rear portion of the liquid crystal projector, and the light source unit is replaced from the bottom surface of the liquid crystal projector.

In order to project an image on the screen from the above liquid crystal projector,
An external reproduction device (not shown) such as a separately prepared video cassette recorder (hereinafter abbreviated as VCR) is connected with a cable or the like, and a reproduction signal from the VCR is supplied to a liquid crystal projector to be enlarged and displayed on the screen. Was there.

[0007]

However, in the conventional liquid crystal projector, when the image is enlarged and displayed on the screen, a reproducing apparatus such as a VCR is separately prepared, and the operation of connecting the VCR to the liquid crystal projector with a cable. It was necessary to reduce the viewer's desire to watch.

Therefore, a device in which a display device and a reproducing device are integrally provided (for example, a video-integrated television) is conceivable, but when the liquid crystal projector and the reproducing device are integrated,
It is necessary to consider not only the position of the playback device, but also the position of the optical unit such as the liquid crystal panel, the position of the fan for cooling the optical unit and the light source unit, and the position of mounting the handle.

The present invention has been made in view of the above-described drawbacks, and a liquid crystal projector and a reproducing device such as a VCR are housed in the same cabinet, and a problem concerning a mounting position of each unit which occurs at that time is solved. To do.

[0010]

SUMMARY OF THE INVENTION The present invention includes a projection lens disposed on the front surface, a handle, a cooling fan disposed on the rear surface, a metal halide lamp located in front of the cooling fan, and the like. A liquid crystal projector comprising a light source unit, an optical unit having a liquid crystal panel arranged at a front portion of the light source unit and at a rear portion of the projection lens, and a reproducing device such as a video cassette recorder arranged at a bottom portion. is there.

[0011]

According to the present invention, by configuring as described above, even if the liquid crystal projector and the VCR are integrated, a fan and a handle for cooling the optical unit such as a liquid crystal panel, the optical unit, and the light source unit are appropriate. It can be placed in any position.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid crystal projector of the present invention will be described below with reference to the drawings.

1 is a side view of the liquid crystal projector of the present invention, FIG. 2 is a front view of the liquid crystal projector of the present invention, FIG. 3 is a top view of the liquid crystal projector of the present invention, and FIG. 4 is a rear view of the liquid crystal projector of the present invention. . FIG. 5 is an enlarged sectional view of a handle used in the liquid crystal projector of the present invention.

1 to 4, the liquid crystal projector is roughly divided into a VCR 4 which is an image source, a light source unit 5 including a light source 5A such as a metal halide lamp, and light from the light source unit 5 which is input to the liquid crystal projector. An optical unit 6 having a liquid crystal panel 6A that is optically modulated based on a reproduction signal, a light source unit 5, and an optical unit 6
And a projection lens 1 for enlarging and projecting the light modulated by the liquid crystal panel 6A on the screen.
It consists of and.

Here, as shown in FIG. 4, the operation surface of the VCR 4 (the surface on which push buttons for play, stop, etc. are attached) is a liquid crystal so that the user can easily operate it while watching the image on the screen. It is arranged so as to be located on the rear surface of the projector.

Since the light source 5A of the light source unit 5 has a life, it is necessary to make the entire light source unit 5 a removable mechanism. However, the light source unit 5
A VCR 4 is arranged in the lower part of the, and a fan 7 is arranged in the rear part. Therefore, the light source unit 5 is
It has a mechanism that can be removed upward from the LCD projector.

Further, as shown in FIG. 2, on the front surface of the liquid crystal projector, there is a handle 3 for moving the liquid crystal projector below the projection lens 1, and on the left and right of the projection lens 1 are a speaker 2 and a fan 7. An air suction port 8 is provided.

The mounting position of the handle 3 will be described below.

Generally, the handle 3 is provided at the center of the upper surface of the liquid crystal projector from the viewpoint that it is easy to carry the liquid crystal projector.

However, as described above, the handle 3 cannot be provided on the upper surface of the liquid crystal projector as in the conventional case because the upper surface of the liquid crystal projector needs a space for detaching the optical unit 5.

Therefore, from the viewpoint that the handle 3 is easy to carry the liquid crystal projector and does not interfere with other units, it is on the front surface of the liquid crystal projector and the projection lens 1
It is provided at the bottom of.

Next, the specific structure of the handle 3 is shown in FIG.
Will be explained.

Incidentally, FIG. 5 shows a state in which the handle 3 is pulled out.

In FIG. 5, the handle 3 includes a handle portion 3B having a hook portion 3A which is a part of the push / push switch, an O-shaped arm 3C, and a Dutch portion which is a part of the push / push switch. It is composed of a portion 3D, a spring 3E, and a base 3G having a slider 3F.

Then, the pulling-out and storing of the handle 3 are performed by the following operations.

First, when housing the handle 3, the hook portion 3A is pressed toward the Dutch portion 3D. At that time, along with this, the slider 3F moves in the direction of the arrow, the arm 3C is housed in the base 3G, and the hook portion 3
A is stored and fixed in the Dutch portion 3F.

Next, when pulling out the handle 3, the handle portion 3B is pressed to pull out the hook portion 3A and the Dutch portion 3.
When the connection of F is released, the slider 3F moves in the direction opposite to the arrow by the spring 3E.

In this way, the handle 3 is pulled out and stored.

[0029]

According to the present invention, with the above configuration, even if the liquid crystal projector and the VCR are integrated, a fan and a handle for cooling the optical unit such as a liquid crystal panel, the optical unit, and the light source unit. Can be placed in an appropriate position.

[Brief description of drawings]

FIG. 1 is a side view of a liquid crystal projector of the present invention.

FIG. 2 is a front view of the liquid crystal projector of the present invention.

FIG. 3 is a top view of the liquid crystal projector of the present invention.

FIG. 4 is a rear view of the liquid crystal projector of the present invention.

FIG. 5 is an enlarged cross-sectional view of a handle used in the liquid crystal projector of the present invention.

FIG. 6 is a perspective view of a conventional liquid crystal projector.

[Explanation of symbols]

 1 Projection Lens 2 Speaker 3 Handle 3A Hook Part 3B Grip Part 3C Arm 3D Dutch Part 3E Spring 3F Slider 3G Base 4 VCR 5 Light Source Unit 5A Light Source 6 Optical Unit 6A Liquid Crystal Panel 7 Fan 8 Air Suction Port

Claims (1)

[Claims] 1. A light source unit including a projection lens and a handle arranged on the front surface, a cooling fan arranged on the rear surface, a metal halide lamp and the like located in front of the cooling fan, and a light source unit of the light source unit. A liquid crystal projector comprising an optical unit having a liquid crystal panel arranged in the front part and in the rear part of the projection lens, and a reproducing device such as a video cassette recorder arranged in the bottom part.