JP3060269U - Projector combining liquid crystal display - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a “projector combined with a liquid crystal display” capable of displaying a large screen with good image quality at low cost. SOLUTION: A concave mirror 2 is provided on a lower inner side surface of a case 1, and a bulb 3 is provided at a focal position of a light beam reflected by the concave mirror 2.
A condenser lens 4 and a plastic lens 5 are provided in front of the bulb 3, and a groove 11 for mounting a liquid crystal display 8 connected to a computer in the case 1 is provided in the case 1 in front of the plastic lens 5. In the other end of the case 1, two reflecting mirrors 6, 6 'are disposed in an L-shape, and a focusing lens 7 is provided on the upper inside of the case 1, and a bulb 3 is provided.
Is transmitted through the condenser lens 4 and the plastic lens 5, is transmitted through the liquid crystal display, and has two reflecting mirrors 6 and 6 ′.
Reflects the image upward and further backward, so that the image passes through the focus lens 7 and is projected on the screen.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a projector combining a kind of liquid crystal display, and a liquid crystal display having a projection film function is combined in a projector in a sliding manner so that the image is projected on a large screen provided outside. It relates to a device that can display a screen.

[0002]

[Prior art]

 In general, so-called multimedia electronic products are required to meet human needs in the visual and acoustic aspects. In the visual aspect, in particular, the dimensions of the screen, in addition to the color and resolution of the display, are required. It has been considered important. For this reason, for example, the display dimensions of televisions and computers did not increase with the times, and ordinary displays could not be operated when the screen dimensions required were 300 inches or more. For example, computer displays are changing from the early small-sized cathode ray tube displays to today's large-sized displays, but they are still only 21 inches, and the volume has become extremely large. The display used in portable computers is currently the largest, which is about 15 inches. If you want to show a large screen to many people, for example, use it for classrooms, meetings, or watching movies at home. It was impossible. There is no other way than the operation of the principle of optical projection as the most economical method that can perform large screen display.

At present, there are generally two types of products in which a computer is combined with the optical projection principle. One is a liquid crystal projector, and the other is a portable computer with a projection function.

In the former liquid crystal projector, an LCD and electronic equipment for driving the LCD are provided in the projector main body. The disadvantages are as follows. a. Price is extremely high. b. The projection luminance is insufficient. c. A separate computer had to be purchased and shared. d. Traditional projection film cannot be used. For this reason, it was expensive and difficult to spread, and it was not ideal for use, and needed to be improved.

A portable computer having the latter projection function is designed so that the back plate of the liquid crystal display is detachable, and the liquid crystal display is detachable from the computer main body. By removing it, the liquid crystal display is treated like a movie film, placed on an overhead projector, and the image of the liquid crystal display is projected on the screen by the overhead projector.

[0006] Its advantages are that it can also be used as a computer, can truly achieve the purpose of a large multimedia screen, is relatively inexpensive, and is relatively popular with overhead projectors. Is easily accepted by consumers.

However, the drawback is that overhead projectors are extremely heavy and are unsuitable for purposes such as carrying them out for display. Most of the overhead projectors use low-luminance halogen lamps, making them dark. Good image quality could not be obtained unless it was in the environment.

[0008]

[Problems to be solved by the invention]

 The present invention has been made to solve the drawbacks of both the above-mentioned conventional liquid crystal projector and a portable computer having a projection function. More specifically, a liquid crystal display having a projection film function is mounted on a slide projector. It is an object of the present invention to provide a projector that combines a liquid crystal display and a liquid crystal display that can display a large image by projecting the image onto a large screen provided outside.

[0009]

[Means for Solving the Problems]

 According to the invention of claim 1, a concave mirror 2 is provided on the lower inner surface of the case 1, a bulb 3 is provided at a focal point of the concave mirror 2, and a condenser lens 4 and a plastic lens 5 are provided in front of the bulb 3. A groove 11 for mounting a liquid crystal display 8 connected to a computer in the case 1 is provided in the case 1 in front of the plastic lens 5, and two reflecting mirrors 6, 6 ′ are L-shaped in another end of the case 1. The focusing lens 7 is provided on the upper inside of the case 1 so that the light beam of the bulb 3 passes through the condenser lens 4 and the plastic lens 5, passes through the liquid crystal display, and the two reflecting mirrors 6 and 6 ' The projector is a combination of a liquid crystal display configured so that an image is reflected upward and further backward, and the image passes through the focus lens 7 and is projected on a screen.

[0010]

[Embodiment of the invention]

 In the present invention, a concave mirror 2 is provided on the lower inner surface of a case 1 and one bulb 3 is attached to a focal position of a light beam reflected by the concave mirror 2, and the front of the bulb 3, that is, the side opposite to the concave mirror 2. A condenser lens 4 and a plastic lens 5 are provided on the case 1, and a groove 11 is provided on the case 1 in front of the plastic lens 5, and two reflecting mirrors 6 and 6 'have an L shape in another end of the case 1. A focus lens 7 is separately provided on the upper inside of the case 1 and a liquid crystal display having a projection film function can be installed in the groove. The liquid crystal display is connected to a computer, After the light source passes through the condenser lens 4 and the plastic lens 5, it passes through a liquid crystal display having a projection function, and two reflecting mirrors 6 and 6 ′ reflect the image upward and further pass therethrough. By refracted projecting toward the video is projected on a screen through the casing 1 top of follower Kasurenzu 7, is configured so as to achieve a visual effect on the large screen.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, according to the present invention, a concave mirror 2 is provided on a lower inner surface of a case 1, and one bulb is provided at a focal position of a light beam reflected by the concave mirror 2. 3, a condenser lens 4 and a plastic lens 5 are provided in front of the bulb 3, that is, on the side opposite to the concave mirror 2, and a groove 11 is provided in the inner wall of the case 1 in front of the plastic lens 5. Two reflecting mirrors 6 and 6 ′ are disposed in the other end so as to have an L shape, and a focusing lens 7 is provided separately on the upper inside of the case 1. A liquid crystal display having a projection film function can be mounted in the groove, and the liquid crystal display can be connected to a computer. After the light source of the bulb 3 passes through the condenser lens 4 and the plastic lens 5, it passes through a liquid crystal display having a projection function, and two reflecting mirrors 6 and 6 'reflect the image upward and further toward the rear. The image is transmitted through the focus lens 7 on the upper part of the case 1 and projected on the screen, thereby achieving a large-screen visual effect.

The liquid crystal display 8 having the above-mentioned projection film function is detached from the portable computer, and is connected to the portable computer by a cable. The liquid crystal display 8 is mounted in the groove 11 of the case 1. Then, as shown in FIG. 2, the bulb 3 in the case 1 is illuminated by being connected to a power source, and the light emitted from the bulb 3 passes through the condenser lens 4 and the plastic lens 5 to be uniformly dispersed in the liquid crystal display. The light projected onto the ray 8 and transmitted through the liquid crystal display 8 is refracted and projected upward and further backward by two more L-shaped reflecting mirrors 6 and 6 ′, so that an image is formed on the case 1. The image is magnified by a focus lens 7 provided at an upper portion and projected on a screen (not shown) to achieve a large-screen visual effect.

The area size of the liquid crystal display 8 is larger than that of a liquid crystal display piece used in a conventional projector, so that the liquid crystal display 8 has a relatively high degree of analysis after enlarged projection and has a good projection image quality.

Further, the projected image is reflected by two reflecting mirrors 6 and 6 ′ arranged in an L shape, and the path of the projection is reflected upward from below and further reflected backward, so that it is linearly projected. It is possible to avoid the problem that the path in the case of direct projection becomes excessively long and thus the aircraft becomes excessively large, thereby achieving the effect of reducing the overall volume.

The groove 11 for mounting the liquid crystal display is provided on the left or right side of the case 1 and can be installed on the upper part of the case 1.

Please refer to FIG. In another embodiment of the present invention shown in FIG. 3, a concave mirror 2, a bulb 3 and a condenser lens 4 in a case 1 are installed in one slide case 12, and the slide case 12 is connected to one end of the case 1. An inverted L-shaped case 13 is rotatably supported at another end of the case 1 with one end thereof, and two reflecting mirrors 6 and 6 ′ are attached to the inner surface of the inverted L-shaped case 13. . In use, the slide case 12 is pulled out outward, the inverted L-shaped case 13 is opened outward, the liquid crystal display 8 is inserted into the groove 11 of the case 1, and the image of the liquid crystal display 8 is projected on the screen. Being provided a large screen visual effect. Conversely, when not in use, the slide case 12 is pushed into the case 1 and the inverted L-shaped case 13 is closed to reduce the overall volume, which is convenient for storage.

Taken together, the present invention achieves the expected purpose and effect, and combines practicality, novelty, and industrial value.

[0018]

[Effect of the invention]

 The present invention relates to a projector combining a kind of liquid crystal display, and a liquid crystal display having a projection film function is combined in a projector in a sliding manner so that the image is projected on a large screen provided outside. It relates to a device that can display a screen.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a sectional view of the present invention.

FIG. 3 is a cross-sectional view of another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 11 Groove 12 Slide case 13 Inverted L-shaped case 2 Concave mirror 3 Valve 4 Condensing lens 5 Plastic lens 6, 6 'Reflecting mirror 7 Focus lens 8 Liquid crystal display

Claims (1)

[Utility model registration claims] 1. A concave mirror 2 is provided on a lower inner side surface of a case 1, a bulb 3 is provided at a focal position of the concave mirror 2, a condenser lens 4 and a plastic lens 5 are provided in front of the bulb 3, and a plastic lens 5 is provided. A groove 11 for mounting a liquid crystal display 8 connected to a computer in the front case 1 is provided in the front case 1, and two reflecting mirrors 6 and 6 ′ are disposed in an L-shape in another end of the case 1. A focus lens 7 is provided on the upper inside of the case 1 so that the light beam of the bulb 3 passes through the condenser lens 4 and the plastic lens 5, passes through the liquid crystal display, and the two reflecting mirrors 6 and 6 'point the image upward and further backward. A projector combined with a liquid crystal display configured such that the light is reflected and the image passes through the focus lens 7 and is projected on a screen.