KR20030044194A - Displaying device using front light panel - Google Patents

Abstract

PURPOSE: A front light-type lighting display device is provided to offer a compact lighting picture frame that is easy to handle and reduce manufacture cost since a number of frame parts become small and thus the width and weight thereof become small too. CONSTITUTION: The lighting picture frame including a light panel as a surface light source, a display object(21), a support panel for supporting the display object and a frame(60) having the light panel, the display object and the support panel disposed inside, wherein the display object is located in front of the support panel, the light panel is located in front of the display object, the light panel has a light pipe(40), a light source(30) making a light incident on the light pipe and a reflecting shade for reflecting the light incident from the light source in a predetermined direction, and the light pipe is formed with a scattering pattern(41) for scattering the light incident from the light on the overall surface.

Description

Front light lighting display device {DISPLAYING DEVICE USING FRONT LIGHT PANEL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting display apparatus with a built-in light source, and more particularly, to a front light lighting display apparatus located in front of a display object in which a surface light source is embedded in a frame.

Conventional picture frames do not have a built-in light source, so when lighting is to be performed at night or indoors, as shown in FIG. 1, it is necessary to separately install a light source on the outside of the picture frame on which pictures and photographic displays are mounted. When illuminating the frame by a light source installed separately from the outside, it is not easy to provide a light source with uniform brightness, and when moving the frame, the light source must be moved at the same time, which is inconvenient.

In addition, another type of conventional picture frame incorporates a light source inside the picture frame, but includes a light source at the rear of the display, and emits light from the back of the display. Utility Model Application No. 1998-0014822, entitled "Picture Frame with Cold Surface Light Emitting Means", is assembled in the frame of a frame in the order of a front plate, an image (display), a translucent plate, and a surface light source as light emitting means. The present invention discloses an illumination frame panel having light emitting means behind the image. In addition, Patent Application No. 2000-0005747 discloses a photo frame having the name "electronic surface emitting display and picture frame" and having a light guide plate as a light source behind the display.

In the conventional picture frame incorporating the surface light source, the surface light source is located at the rear of the display, so that a separate panel for fixing and supporting the display is installed on the front of the display. In addition, because the thickness of the frame is heavy and heavy weight, handling is inconvenient, a lot of manufacturing costs are required, and there are many parts when replacing and reassembling the display of the frame.

The above problem can be solved by providing a front-illuminated surface light source which is disposed in front of the display and provides illumination for the display at the same time as the support and protection member for the display and does not interfere with the visibility of the display.

The present invention is to solve the above problems, a light panel as a surface light source, a display panel, a support panel for supporting the display, and the light panel and the display panel and the frame in which the support panel is installed therein In the lighting display device comprising a, the display is located in front of the support panel, the light panel is located in front of the display, the light panel is incident from the light source and the light source that is incident on the light guide plate and the light guide plate. It includes a reflector for reflecting light in a predetermined direction, the light guide plate is an object to provide a front light illumination display device formed with a scattering pattern for scattering the light incident from the light source on the front.

In the front light illumination display device according to the present invention, since the light panel itself enters a uniform light as a surface light source and transmits the light reflected on the display, the front panel illuminating display protects or supports the function as a light source from the front surface. The function as a cover can be performed at the same time, so that no separate display cover or protective member is required.

In addition, the front light illumination display device according to the present invention is characterized in that the scattering pattern formed on the front surface of the light guide plate is formed by printing the coating material, or formed by forming the light guide plate irregularities, or formed by attaching the pattern formed on a transparent film.

In addition, the front light illumination display device according to the present invention is characterized in that the scattering pattern formed on the light guide plate is formed so that the amount of light scattering increases in proportion to the distance from the light source.

Further, the front light illumination display device according to the present invention is characterized in that the scattering pattern formed on the light guide plate is a line or a dot, and in the case of a dot, the maximum diameter thereof is 100 m or less in the case of a line. .

In addition, the front light illumination display device according to the present invention is characterized in that the light guide plate on which the scattering pattern is formed further comprises an antireflective coating layer on the front surface.

In addition, the front light illumination display device according to the present invention, the front surface of the light guide plate on which the scattering pattern is formed has a shape such that the inclination of the tangent of the front surface does not increase as the distance from the light source increases, the front of the light guide plate at the end The tangential slope is 0 or less.

1 is a schematic view showing a conventional lighting frame configuration

Figure 2 is a developed perspective view showing the configuration of the present invention

3 is a schematic diagram illustrating the principles of the present invention

<Short description of symbols>

10 external light source

20 support panel

21 indications such as photograph or picture

30 Light guide plate light source

40 light guide plate

41 Scattering Patterns

50 Reflector for light source

60 frames

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings showing an embodiment of the present invention.

1 is a schematic diagram showing a structure for illuminating a frame by a conventional external light source, FIG. 2 is an exploded perspective view showing the structure of the present invention, and FIG. 3 is a schematic diagram showing the principle of frame lighting according to the present invention.

As shown in FIG. 2, the front light illumination display device according to the present invention includes a light panel 70 serving as a bright light source provided in front of the frame 60, that is, in a direction in which the display 21 is displayed. The display panel 21 disposed at the rear of the panel 70 and displayed in a picture frame such as a picture or a photo, and a support panel 20 installed inside the frame 60 to support the display 21 at the rear of the display panel. It is composed of Although not shown, a power supply device and wiring for supplying power to the light panel, which is a surface light source, are installed inside the frame.

The light panel 70 and the indicator 21 may be arranged in close contact or at regular intervals. The indicator 21 and the support panel 20 are generally arranged in close contact with each other, but may be disposed at regular intervals. In order to arrange the light panel 70 and the indicator 21 and the support panel 20 in the frame, an end is formed in the frame, a separate support member or a spacer is installed, a bolt or the like is fixed, or an arbitrary frame. It can arrange | position using a well-known method of arrange | positioning a member.

The light panel 70 includes a light guide plate 40 provided to match the shape of the frame 60 of the picture frame, a light source 30 provided on the side surface of the light guide plate so that light enters the light guide plate 40, and light from the light source. It includes a reflector 50 surrounding a portion of the light source in order to be incident in a predetermined direction toward the light guide plate. The assembly of the light guide plate 40, the light source 30, and the reflector 50 may use any method known in the art for manufacturing a light panel or a backlight.

In addition, in the present embodiment, only one light source 30 is provided on the side of the light guide plate 40, but a plurality of light sources may be arranged according to the shape of the light guide plate 40 and the brightness of the light panel 70 as a desired surface light source. It can also be installed on the side.

A scattering pattern 41 for scattering light from the light source 30 incident on the light guide plate is formed on the front surface of the light guide plate 40. The scattering pattern 41 is provided on the front surface of the light guide plate 40 and is formed to visually recognize the display 21 disposed behind the light guide plate 41 through the light guide plate 40. Therefore, the scattering pattern 41 is transparent and finely formed so that it cannot be recognized by human eyes. As a method of forming a scattering pattern of this type, there is a method of printing a scattering pattern having a fine size with paint on the entire surface of the light guide plate 40. In addition, a method of processing the light guide plate to have a fine concavo-convex shape on the front surface of the light guide plate is also possible. The fine concavities and convexities may be formed by a mold at the time of manufacturing the light guide plate 40 or may be formed by other processing methods such as laser or machining after manufacturing the light guide plate. In addition, a scattering pattern 41 may be formed on a transparent film, and the transparent film having the scattering pattern 41 may be attached to the light guide plate 40.

The scattering pattern may have a linear shape as shown in FIG. 2 and may be composed of a plurality of dots formed by a predetermined rule. In any case, the scattering pattern 41 should not interfere with the visibility of the display 321. Therefore, when printing a paint, when using a transparent paint, or when using an opaque or translucent paint, the size of the pattern is 100 μm or less, preferably 30 to 50 μm or less in order to ensure visibility. When the shape of the pattern is a line, the width of the line is 100 µm or less, preferably 30 to 50 µm or less.

In addition, since the light guide plate 40 is positioned on the front surface of the display 21 such as a picture or a photo, the anti-reflective coating may be applied to the light guide plate 40 to improve visibility and increase light transmittance. In addition, in order to protect the light guide plate 40, although not shown, a transparent protective plate or a protective film may be additionally installed on the front and rear surfaces of the light guide plate, respectively.

The scattering pattern 41 formed on the front surface of the light guide plate 40 may be formed such that the amount of acid increases in proportion to the distance from the light source 30. That is, less scattering occurs near the light source 30 and more scattering occurs near the light source 30. Techniques for forming the scattering pattern to have such characteristics are known in the light panel or backlight art by adjusting the size and density of the pattern.

The light guide plate 40 may be formed in a flat plane on both front and rear surfaces, or may be a flat plane on only one surface of both surfaces. Also, both sides may not be flat. When the surface of the light guide plate 40 is not a flat plane, the inclination of the tangential line in contact with the surface is formed so as not to increase as the contact point of the tangential line moves away from the light source. In other words, as it moves away from the light source 40, it has a convex shape (more precisely, a non-concave shape, including the case where the tangent slope is 0). In the farthest part from the light source 40, that is, the end portion where the light guide plate 40 ends, the inclination of the tangent line is formed to have a zero or negative value. This is to prevent light from spreading out at the end of the light guide plate.

Hereinafter, with reference to Figure 3 will be described the operation of the illumination frame according to the present invention.

As shown in FIG. 3, the light incident from the light source 30 to the light guide plate is totally reflected inside the light guide plate 40, and is scattered when it meets the scattering pattern 41 formed on the front surface of the light guide plate 40. Illumination is provided to the display 21 located at. The light is provided to the display 21 and the reflected light is incident to the outside of the light guide plate 40 through the gap between the scattering patterns 21, and the display inside the front light display device can be visually recognized from the outside. Will be.

According to the front light lighting display device of the present invention, there is no need to move the lights separately even if the location of the display device is changed by embedding the light inside the display device, and uniform brightness by using a light panel that is a uniform surface light source Can provide lighting.

In addition, compared to the conventional light-embedded picture frame, by placing a light panel that is a surface light source in front of the picture frame, there is no need for a separate member for protecting and supporting the display. Therefore, the number of parts of the picture frame is reduced, thereby providing a compact lighting frame that is easy to handle by reducing the width and weight of the picture frame, which can bring about a reduction in production cost.

In addition, the present invention provides a front light lighting display device as an illumination frame, in particular as an embodiment, but the technical idea of the present invention is to illuminate the front at the same time lighting the front of the display, such as photographs or drawings, but not at the same time It is to provide a new concept lighting device that can protect and support the display and display, so that it can be widely applied not only to lighting display devices, but also to all conventional rear lighting light panels such as promotional posters, menu boards, signs, and other exhibition promotional materials. It is obvious.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

Claims (8)

In the lighting display device comprising a light panel as a surface light source, a display, a support panel for supporting the display, and a frame in which the light panel, the display and the support panel is installed, The indicator is located in front of the support panel, The light panel is located in front of the display, The light panel includes a light guide plate, a light source incident light on the light guide plate, and a reflector for reflecting light incident from the light source in a predetermined direction. The light guide plate is a front light illumination display device characterized in that the scattering pattern for scattering the light incident from the light source is formed on the front. The front light illumination display device according to claim 1, wherein the scattering pattern formed on the front surface of the light guide plate is formed by printing a paint. The front light illumination display device according to claim 1, wherein the scattering pattern formed on the front surface of the light guide plate is formed by forming irregularities on the light guide plate. The front light illumination display device according to claim 1, wherein the diffuser pattern formed on the front surface of the light guide plate is formed by attaching a pattern to a transparent film. The front light illumination display device according to any one of claims 1 to 4, wherein the scattering pattern formed on the light guide plate is formed so that the amount of scattering of light increases in proportion to the distance from the light source. The scattering pattern formed on the light guide plate is a line or a dot, and in the case of a dot, the maximum width thereof is 100 μm or less. Front light lighting exhibition device. The front light illumination display device of claim 1, wherein the light guide plate on which the scattering pattern is formed further comprises an antireflective coating layer on a front surface or on both sides. The front surface of the light guide plate on which the scattering pattern is formed has a shape such that the inclination of the tangent of the front surface does not increase as the distance from the light source increases, and the tangent slope of the front surface of the light guide plate at the end is zero or less. A front light lighting display device.