JP3091813U - Image display projector with operation key illumination function - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To use an image projection lamp in an image display projector to illuminate operation keys without using a separate light source, thereby improving key operability. SOLUTION: The key top of an operation key 6a faces an operation key opening 1a of an outer case 1. This operation key 6
a is made of a translucent member. The light guide 7 has the incident side end face 7c facing the space 5a in the image projection engine 5, and the emission side end face 7e faces near the base of the operation key 6a. The light in the image projection engine 5 is
The light is guided by the light guide 7 and emitted near the base of the operation key 6a. Thereby, the light is emitted from the operation keys 6a.
Leaks out of the exterior case 1 through a gap between the operation key 6a and the operation key opening 1a, and the operation key 6a looks bright. In addition, when the light passes through the inside of the operation key 6a, the operation key 6a itself appears to shine.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention forms an image by an image forming element using light from a lamp and The present invention relates to an image display projector that projects and displays an image on a screen, etc. Image display project having operation key illumination function for illuminating operation keys for adjustment Information.

[0002]

[Prior art]

  Conventionally, based on image signals from personal computers, video cameras, etc., image types such as liquid crystal An image is formed using the light from the lamp by the component and the image is displayed on the screen etc. There is an image display projector for projecting and displaying. This kind of image display project In the outer case, an image forming unit called an image projection engine I have it. This image projection engine projects the light from the image forming elements and the lamp into an image. The image projection engine body has an optical system that guides and illuminates the component Form an image for projection on a screen, etc. using reflection or transmission of light from the component It is supposed to do. In addition, this type of image display projector is generally used for projection. Equipped with operation keys for making various adjustments to the images to be displayed. However, it is provided so as to face the surface of the outer case 1 so that it can be operated by the operator.

[0003]   By the way, such an image display projector can be used in a dark room. When used in a dark room, it is difficult to find the position of the operation keys and There was a possibility of making a floor plan or performing a wrong operation. Therefore, with a lamp for image projection Separately, a light source such as an LED is provided, and the operation key is illuminated by the light of the LED. An image display projector configured to do so is known.

[0004]   Regarding the magnifying projection device, the keys of the operation unit should be made of translucent resin, and It is known that LEDs are arranged on the surface so that the keys that need to be operated emit light. (See, for example, Japanese Patent Laid-Open No. 5-93958). Also, the overhead Regarding the projector, install the optical fiber base end to the existing light source inside the main unit Attached a mini light for hand lighting that can support the tip of the bar near the body Those are known (see, for example, Japanese Utility Model Laid-Open No. 62-116245). Also, A projector device for projecting an image of a cathode ray tube on a screen. Connect one end of a large number of optical fibers to the projecting part on the periphery of the fluorescent film of It is known that the other end of the projector is used as lighting outside the projector. (See, for example, Japanese Utility Model Laid-Open No. 5-15037).

[0005]

[Problems to be solved by the device]

  However, in the above-mentioned conventional image display projector, the operation keys are illuminated. In order to do this, an LED for operating key illumination is required in addition to the lamp for image projection. there were. Also, to illuminate multiple operation keys, you can select multiple operation keys according to the number of operation keys. Since the LED is required, the cost is increased. In addition, the above-mentioned JP-A-5 No. 93958, No. 62-116245, No. 5-15037. Even if the content disclosed in the publication is applied, the above problems cannot be solved. .

[0006]   The present invention has been made to solve the above problems, and a run for image projection is provided. By using the light from the projector, it is possible to operate without using a separate light source for operating key illumination. Operation key lighting function that can illuminate the work keys and improve the key operability in a dark room An object is to provide an image display projector having the above.

[0007]

[Means for Solving the Problems]

  In order to achieve the above object, the device of claim 1 is provided with an image forming element and a lamp. An optical system for guiding light to irradiate the image forming element, and an optical system for irradiating the image forming element. And a space that serves as an optical path for the reflected light, and uses the reflection or transmission of the light in the image forming element. And an image projection engine for forming an image for projection on a screen. An external case that houses the projection engine and has an opening for operation keys, and Has operation keys for various adjustments related to projection. Switching operation, the key top of the operation key faces the opening, the exterior Image display having operation key illumination function with key operation section arranged in case In the projector, the operation keys are made of a translucent material and The emitting side end face is arranged so as to face the space so as to be able to guide the light in the space serving as the optical path. , Inside the outer case with the emission side end face facing the base of the operation key It is equipped with a transparent light guide installed to guide the light inside the image projection engine to the light. Guide the light by a guide to emit it near the base of the operation key. The operation key is illuminated, and the operation is performed by light leaking from the gap between the operation key and the opening. The key is made visible.

[0008]   In this configuration, the light inside the image projection engine is the light incident side end surface of the light guide. Incident on the inside of the light guide, propagates inside the light guide, and near the base of the operation key. At, the light is emitted from the end face on the emission side of the light guide. This allows you to The area around the exterior is illuminated, and light is emitted from the gap between the operation key and the operation key opening outside the outer case. The operation key looks bright due to the leak. Also, light penetrates inside the operation keys By doing so, the operation keys themselves appear to shine.

[0009]   According to a second aspect of the present invention, the image forming element and the image forming is performed by guiding light from a lamp. An optical system for irradiating the element, and a space serving as an optical path of the light for irradiating the image forming element And projecting on a screen using reflection or transmission of light at the image forming element. And an image projection engine for forming an image for storing the image projection engine. An exterior case with an opening for key creation and various adjustments regarding the projection of the image are performed. An operation key for operating, and a switching operation is performed by operating the operation key. A key arranged in the outer case so that the key top of the operation key faces the opening. In an image display projector having an operation key illumination function including an operation unit, The exterior that guides the light in the space serving as the optical path and emits the light near the base of the operation key. It is equipped with a light guide installed in the case.

[0010]   In this configuration, the light in the image projection engine is guided by the light guide. And is emitted near the base of the operation key. As a result, near the base of the operation key Is illuminated, and light leaks out of the outer case through the gap between the operation key and the operation key opening. By doing so, the operation keys appear bright.

[0011]   The invention of claim 3 is an image display professional having the operation key illumination function of claim 1. In the ejector, the operation key is formed of a translucent member.

[0012]   In this configuration, the light guide guides the light near the base of the operation key. The light emitted by the operation key passes through the inside of the operation key, which causes the operation key itself to shine. appear.

[0013]

[Embodiment of device]

  Embodiments embodying the present invention will be described below with reference to the drawings. Figure 1 and 2 and FIG. 2, the image display projector 100 is a personal computer, a video camera, or the like. An image is formed using the built-in image display device based on the image signal input from It is a device that projects and displays the image on a screen, a wall surface, or the like. This image display project The vector 100 includes a projection lens 2 for projecting an image on the front surface of the outer case 1. A lamp 3, an image projection engine 5, a key operation unit 6 are provided inside the outer case 1. , And a light guide 7.

[0014]   The lamp 3 is for projecting light for image projection, and is provided inside the outer case 1. It is installed in the lamp house 4 that has been opened. The image projection engine 5 operates from the lamp 3. Image is formed by using the light of, and the image is projected from the projection lens 2. It is fixed in the outer case 1. This image projection engine 5 has The opposite of DMD (Digital Micro Mirror) etc. which forms an image by using the reflection of light A reflection type image forming element and a light guide from the lamp 3 to irradiate the image forming element. And an optical system including a reflecting mirror and a relay lens.

[0015]   The key operation unit 6 is for performing various adjustments such as image size and brightness. , A plurality of operation keys 6a. This key operation unit 6 is operated by pressing the operation key 6a. By doing so, the switch under the operation key 6a is turned on / off. The key top of each operation key 6a faces the operation key opening 1a of the outer case 1. It is arranged in the outer case 1 so as to be open. Each operation key 6a can be pressed As described above, it is configured to be slightly smaller than the operation key opening 1a. Also, each operation The work key 6a is formed of a translucent member, and each key top surface has a key Seed characters and symbols are printed. The light guide 7 is provided inside the image projection engine 5. The light is guided and the operation keys 6a are illuminated.

[0016]   Next, the configuration of the light guide 7 will be described with reference to FIGS. 3 and 4. La The guide 7 is made of a transparent material such as polycarbonate or acrylic. Accordingly, the plate-shaped portion 7a and the plurality of cylindrical portions 6b are provided.

[0017]   The plate-shaped portion 7a is a portion that guides light inside the image projection engine 5, and has a thin thickness. It has a plate shape. The plate-shaped portion 7a is partly an image projection engine. It is inserted in the space 5a in the interior 5 and has an incident side end face 7c at its tip. Entering The shooting-side end surface 7c transmits the light scattered in the space 5a in the image projection engine 5 to the plate-shaped portion 7a7. It faces the space 5a in the image projection engine 5 so that light can be guided inside.

[0018]   The cylindrical portion 7b illuminates the operation key 6a with the light guided by the plate portion 7a. And is formed by extending substantially vertically from the plate-shaped portion 7a via the bent portion 7d. In addition, it has an annular emission side end face 7e at its tip. The operation key 6a is this circle It is arranged inside the tubular portion 7b so that it can be pressed down, and the exit side end face 7e is provided with an operation key. It faces upward around the base of 6a.

[0019]   According to such a configuration, the lamp 3 is installed in the space 5a in the image projection engine 5. A large amount of light is collected by guiding the light from the optical system, and part of it is It is scattered in the space 5a in the image projection engine 5. And that scattered extra Such light is incident on the incident side end surface 7c of the light guide 7. It is incident on the incident side end face 7c. The light propagates through the plate-shaped portion 7a by repeating total reflection, and is emitted from the emission side of the cylindrical portion 7b. It is emitted from the end face 7e. In addition, partial reflection from the bent portion 7d of the cylindrical portion 7b is also possible. The light that could not be emitted is emitted. As a result, the vicinity of the base of the operation key 6a is on the emission side. It is illuminated by the light emitted from the end face 7e and the bent portion 7d.

[0020]   At this time, the operation key 6a is formed slightly smaller than the operation key opening 1a. Therefore, the light emitted from the emission-side end surface 7e and the bent portion 7d is generated by the operation key 6a. It leaks to the outside of the outer case 1 through the gap with the operation key opening 1a, and as a result, the operation key 6a looks bright. Further, the operation key 6a is formed of a translucent member. Therefore, the light emitted from the emission side end face 7e and the bent portion 7d penetrates the inside of the operation key 6a. Thus, the operation keys 6a themselves appear to shine. Therefore, in a dark room However, it is printed on the location of the operation key 6a or on the surface of the key top of the operation key 6a. You can understand various characters and symbols. Further, the operation key 6a is a light emitting side end face formed in an annular shape. 7e and the bent portion 7d are arranged inside, so that it is even from the periphery of the operation key 6a. It is illuminated by the light and looks beautiful without causing uneven brightness.

[0021]   The present invention is not limited to the configuration of the above embodiment, and various modifications can be made. For example, in the above-described embodiment, various characters and symbols on the key tops of the operation keys 6a are displayed. Instead of printing, various characters and symbols may be printed on the surface of the outer case 1. Also, The image forming element is not limited to the DMD, and a reflective or transmissive type such as liquid crystal may be used. Good.

[0022]

[Effect of device]

  As described above, according to the first aspect of the invention, the light in the image projection engine is lit. For guiding the operation keys, as it is guided by the guide and emitted near the base of the operation keys. The operation keys can be illuminated without using a separate light source, which makes the operation keys brighter. It looks good and improves the operability of keys in a dark room. In addition, the operation key is a translucent member Because it is made up of more, the operation keys themselves appear to be shining, and the operability in the dark Is further improved.

[0023]   According to the invention of claim 2, the light in the image projection engine is guided by the light guide. A separate light source for operating key illumination is used to emit light near the base of the operating key. You can illuminate the operation keys without making them look bright and The key operability in is improved.

[0024]   According to the invention of claim 3, since the operation key is formed of the translucent member, The operation keys themselves appear to shine, further improving key operability in a dark room.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of an image display projector according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an internal configuration of the projector.

FIG. 3 is a partially cutaway perspective view showing a configuration of a light guide of the projector.

FIG. 4 is a partially enlarged view of FIG. 3 showing a configuration of a light guide of the projector.

[Explanation of symbols]

1 Exterior case 1a Operation key opening 3 lamps 5 Image projection engine 5a space 6 key operation part 6a Operation key 7 Light guide 7c Incident side end face 7e Exit face 100 image display projector

Claims (3)

[Scope of utility model registration request] 1. An image forming element, an optical system that guides light from a lamp to irradiate the image forming element, and a space that serves as an optical path of the light that irradiates the image forming element. An image projection engine that forms an image to be projected on a screen by using reflection or transmission of light in an image forming element; an exterior case that houses the image projection engine and has an opening for an operation key; A key operation unit for operating various adjustments related to the projection of the operation key, a switching operation is performed by operating the operation key, and a key top of the operation key faces the opening and is arranged in the exterior case. In an image display projector having an operation key illumination function, the operation key is formed of a translucent member, and the incident side end face can guide light in a space serving as the optical path. And a transparent light guide installed in the exterior case, which is disposed so as to face the space and whose emission side end face is disposed so as to face the vicinity of the base of the operation key. The operation key is illuminated by being guided by a guide and emitted near the base of the operation key, and the operation key can be visually recognized by light leaking from a gap between the operation key and the opening. An image display projector having an operation key illumination function. 2. An image forming element, an optical system that guides light from a lamp to irradiate the image forming element, and a space that serves as an optical path of the light that irradiates the image forming element, An image projection engine that forms an image to be projected on a screen by using reflection or transmission of light in an image forming element; an exterior case that houses the image projection engine and has an opening for an operation key; A key operation unit for operating various adjustments related to the projection of the operation key, a switching operation is performed by operating the operation key, and a key top of the operation key faces the opening and is arranged in the exterior case. In an image display projector having an operation key illumination function, the light installed in the outer case that guides the light in the space serving as the optical path and emits the light to the vicinity of the base of the operation key. An image display projector having an operation key illumination function, which is provided with a guide. 3. The image display projector having an operation key illumination function according to claim 1, wherein the operation key is formed of a translucent member.