JP3149653U - Display device - Google Patents

Abstract

The present invention provides a display device that can clearly show outlines of characters, figures, etc., and is excellent in design and the like. A display device 10 includes a transparent plate 12, a display unit 14, a light source unit 16, and a reflection unit 18. A reflective surface 20 is provided on the side of the display unit 14 facing the transparent plate 12. The light introduced into the transparent plate 12 from the light source unit 16 is generated inside the transparent plate 12 due to the difference in refractive index between the transparent plate 12 and the outside, and because the reflection unit 18 and the reflection surface 20 are provided. The reflection is repeated, the light diffuses over the entire inside of the transparent plate 12, and is irradiated to the outside from the side where the display unit 14 is provided. At this time, a band-like portion having a luminance higher than that of other portions is formed around the edge of the display portion 14. [Selection] Figure 1

Description

  The present invention relates to a display device that has excellent visibility and design when used, for example, on an advertising board, by causing characters or the like to float in light from behind.

  Conventionally, various display boards such as an electric signboard using a backlight have been proposed. For example, providing a translucent cover at the opening formed in the front of the box and displaying characters printed on the cover with a fluorescent lamp or the like housed inside the box is often used for emergency exit indicators and the like. .

  Incidentally, in recent years, light-emitting diodes (LEDs) have been widely adopted as light sources that have low power consumption, long life, and are small and relatively inexpensive. Even in the above display panel, a light emitting diode is used as a light source. At this time, it is easy to see by illuminating the display part of characters or the like uniformly or by adding contrast between the display part and its periphery. Various designs have been proposed that have been devised with respect to the appearance and appearance, etc. to enhance the design.

For example, a translucent display panel shown in FIG. 7 has been proposed (see Patent Document 1). The translucent display panel 1 forms a mirror surface area 3 and a rough surface area 4 on the back surface of the translucent board 2. The mirror surface region 3 is covered with a reflective layer 5 to provide a mirror reflection portion M, and the rough surface region 4 is covered with an ink layer 6 to provide a display portion N. By introducing the light from the light emitting diode 7 into the translucent display panel 1 through the end face and internally reflecting it, the display portion N of the rough surface area 4 can be illuminated brightly, and from any direction in the front It is said that the display can be visually recognized, and furthermore, the contrast of the display is high by characters and the like appearing in the light.
Further, an internally illuminated display plate shown in FIG. 8 has been proposed (see Patent Document 2). This internally-illuminated display plate includes a translucent surname plate 8 in which display characters X such as letters are written on the inner surface 8a, a mirror plate 9, an inner surface 8a of the translucent surname plate 8, and a surface 9a of the mirror plate 9. And the translucent plate 8 is joined so as to be the outer surface, and light is received from the upper and lower joining end faces. As a result, it is said that the display characters clearly stand out and give a good impression by the surface light emission.
JP 2002-351366 A Utility Model Registration No. 3039185

  However, all of the conventional display boards have room for further improvement in terms of visibility and design.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a display device that can clearly show the outline of characters, figures, etc. and is excellent in design and the like.

  A display device according to the present invention introduces a transparent plate, a colored display portion provided on the front side of the transparent plate and made of characters, figures, or a combination thereof, and substantially the entire amount of light into the transparent plate. A light source portion configured as described above, and a reflective portion provided substantially in contact with the transparent plate on the back side of the transparent plate, and a reflective surface provided on the side of the display portion facing the inside of the transparent plate It is characterized by being able to.

  The display device according to the present invention is preferably characterized in that the reflection surface is formed into a rough surface.

  The display device according to the present invention is preferably characterized in that a projection area of the display unit of the reflection unit is formed on a rough surface.

  The display device according to the present invention is preferably characterized in that light from the light source unit is introduced into the transparent plate from a side end surface of the transparent plate.

  In the display device according to the present invention, preferably, the light source of the light source unit is a light emitting diode.

  In the display device according to the present invention, preferably, the transparent plate has a thickness of 3 to 10 mm.

  A display device according to the present invention is provided on a transparent plate, a front side of the transparent plate, a colored display portion made of characters, figures, or a combination thereof, and substantially the entire amount of light in the transparent plate. Since the light source portion configured and the reflective portion provided substantially in contact with the transparent plate on the back side of the transparent plate, and the reflective surface is provided on the side of the display portion facing the inside of the transparent plate, The periphery of the edge can be illuminated more brightly, and the outline of the display section can be clearly raised, and the visibility and design of the display section are excellent.

  An embodiment of a display device according to the present invention will be described.

A display device according to this embodiment will be described with reference to FIG.
A display device 10 illustrated in FIG. 1 includes a transparent plate 12, a display unit 14, a light source unit 16, and a reflection unit (light reflection unit) 18. A reflective surface (light reflective surface) 20 is provided on the side of the display unit 14 facing the inside of the transparent plate 12.
The light introduced from the light source unit 16 into the transparent plate 12 is caused by the difference in refractive index between the transparent plate 12 and the outside (air), and the reflection unit 18 is provided. The reflection is repeated, the light diffuses over the entire inside of the transparent plate 12, and is emitted (illuminated) from the side where the display unit 14 is provided to the outside.
Thereby, the display part 14 can be visually recognized in the state which floated in illumination. At this time, since the reflective surface 20 is further provided, a band-like portion having a luminance higher than that of other portions is formed around the edge of the display portion 14, so that the contrast between the display portion 14 and the periphery thereof is increased. It becomes large and the outline of the display part 14 becomes clear. For this reason, while being excellent in the visibility of the display part 14, it is excellent in the design property of the display apparatus 10 whole containing the display part 14 or the display part 14. FIG.

The material of the transparent plate 12 is not particularly limited as long as it has transparency. Depending on the application, it is preferable to use a plate such as glass or quartz because a heavy feeling and a high-class feeling can be obtained. On the other hand, it is preferable to use a transparent resin, particularly a transparent acrylic resin, in that it is lightweight and inexpensive. The degree of transparency of the transparent plate 12 is not particularly limited as long as the effect of the present invention is achieved. As long as the difference with the color of the display part 14 is clear, the transparent plate 12 does not ask | require colorless and colored, but it is preferable to set it as the color with both large contrast. These materials can be easily obtained as appropriate.
The thickness D of the transparent plate 12 is not particularly limited. However, when the thickness is 3 to 10 mm, the periphery of the edge of the display unit 14 is more strip-like and brighter, as will be described in detail later. It can be illuminated and is more preferred. When the thickness D of the transparent plate 12 is less than 3 mm, depending on the structure of the apparatus, it may be insufficient to uniformly illuminate and illuminate the entire surface of the transparent plate 12. On the other hand, when the thickness D of the transparent plate 12 exceeds 10 mm, the periphery of the edge of the display unit 14 is wide and has a low brightness band, which may impair the effects of the present invention.

The display unit 14 is made of characters, graphics, or a combination thereof, and is colored. Here, “colored” refers to all colors other than white and including black. However, white is not completely excluded, and white may be used when the hue and brightness of the color of the transparent plate 12 are significantly different. In order to obtain a sufficient contrast between the display unit and the periphery, it is more preferable that the display unit 14 has a dark color such as black.
The display unit 14 can be formed, for example, by applying a paint having the above color on the surface of the transparent plate 12, or by screen printing, or from a colored sheet having the above color. It is also possible to form by cutting or sticking to the surface of the transparent plate 12. Furthermore, for example, the display unit 14 is formed on the surface of an ultrathin transparent plate made of the same material as the transparent plate 12, and the display unit 14 is joined to the transparent plate 12 with the display unit 14 side inward. You may comprise so that 14 may not be exposed.
The reflection surface 20 provided on the back surface of the display unit 14 can be appropriately selected. For example, a metal sheet having a high light reflectance such as silver or aluminum is used, and this sheet is attached to the back surface of the display unit 14. Alternatively, these metals may be deposited on the back surface of the display unit 14 or the like. Moreover, as long as the reflective surface 20 has the effect of this invention, you may use suitably a material with big reflectances, such as a white opaque sheet, for example. These points are the same also about the reflection part 18 mentioned later.
By providing the reflective surface 20 on the back surface of the display unit 14, the periphery of the edge of the display unit 14 can be clearly illuminated with a strip-like shape and high brightness.
At this time, it is more preferable to form the reflecting surface 20 as a rough surface because the periphery of the edge of the display unit 14 can be illuminated more clearly in a strip shape and with higher luminance.

The light source unit 16 is not limited to the type of the light source. For example, a fluorescent lamp or a light bulb may be used. However, the light source unit 16 has low power consumption, a long life, a small size, is relatively inexpensive, and is further transparent. It is preferable to use a light-emitting diode that does not hinder downsizing of the entire device even if it is arranged in direct contact with the transparent plate 12 in order to introduce light into the inside of the device.
The light source unit 16 can be in any suitable form as long as it is configured so that substantially the entire amount of light can be introduced into the transparent plate 12.
For example, FIG. 1 introduces light from the light source of the light source unit 16 into the transparent plate 12 from the side end face of the transparent plate 12, so that light can be uniformly introduced to the entire surface of the transparent plate 12. it can. However, instead of this, as shown in FIG. 2, for example, the display device 10a embeds, for example, a light emitting diode as a light source of the light source unit 16a in the corner of the surface of the transparent plate 12, and transparently transmits light as in FIG. You may comprise so that it may introduce | transduce into the inside of the transparent plate 12 from the side surface of the plate 12. FIG.
In addition, when the width dimension of the transparent plate 12 on the side where the light from the light sources of the light source sections 16 and 16a is introduced (the width dimension of the transparent plate 12 in the direction penetrating the paper surface in FIG. 1 or FIG. 2) is large, Needless to say, it is more preferable to provide a suitable number of light sources such as light emitting diodes in order to uniformly introduce light in the width direction.
Further, for example, if a plurality of light emitting diodes having different emission colors are arranged as a light source and used, for example, by automatically switching at regular intervals, the color of the illumination that becomes the background of the display unit 14 is switched, whereby the display board 10 is changed. It is preferable because it can attract the eyes of the viewer.

The reflecting portion 18 can have the same configuration as that of the reflecting surface 20. For example, an appropriate reflecting sheet may be attached to or in close contact with the back surface of the transparent plate 12, and reflective paint or the like may be used. It may be formed by coating or the like on the back surface of 12.
In addition, when the display device 10 is used by posting on a member such as a whiteboard having reflectivity such as a whiteboard, the display device 10 is closely attached to a member such as a wall, or both are only slightly separated. By providing in the state which contact | abutted substantially, members, such as a wall, become the reflection part 18, and it is not necessary to provide a reflective sheet in the back surface of the transparent plate 12. FIG.
Further, at this time, as shown in FIG. 3, when the projection region 18a of the display unit 14 of the reflection unit 18b of the display device 10b is formed on a rough surface, the periphery of the edge of the display unit 14 has a narrower band shape and higher brightness. In addition, it is more preferable because it can be more clearly illuminated.

  The display device according to the present embodiment can be suitably used for an advertisement illumination device, a display board for a company name or logo, a nameplate of a house, and the like.

Example 1
Cut out a sheet in which a blue film and an opaque white film are bonded to each other and a sheet in which a silver film and an opaque white film are bonded to one side of a colorless and transparent acrylic plate having a thickness of 5 mm and a planar dimension of 265 mmW × 330 mmL In both cases, the white film side was affixed to the acrylic board (not shown for violation of public order and morals), and the characters (display part) were displayed in two upper and lower rows (the darker one in the lower row is the blue film) Min). In addition, an opaque white plate having a slightly larger planar dimension than that of the acrylic plate was attached to the other side of the acrylic plate (reflecting portion). Also, a 300 mm long tape with 18 red light emitting diodes arranged on the end face in the width direction of the acrylic plate so that light is introduced into the acrylic plate from the direction of 330 mmL of the acrylic plate. Got.
FIG. 4 shows a photograph of the display device taken from the display portion side in a state where the obtained display device is placed in a dark room and the red light emitting diode is turned on.

(Example 2)
Cut out a sheet with a black film and an opaque white film pasted on one side of a colorless and transparent acrylic plate with a thickness of 5 mm and a plane dimension of 235 mmW x 500 mmL, and paste the white film side toward the acrylic plate. The character (display section) of (not shown for public order and moral violations) was displayed. In addition, an opaque white plate was disposed on one side of the opposite side of the acrylic plate with an interval of 10 mm from the acrylic plate (reflecting portion). In addition, a 500 mm long tape with 30 white light emitting diodes (manufactured by CREE, USA) is placed on the end face in the width direction of the acrylic plate so that light is introduced into the acrylic plate from the direction of 500 mmL of the acrylic plate. Arranged to obtain a display device. The letters SHOT BAR and THE displayed on the left side of the display device (not shown for public order and morals violations) are cut off an opaque white film and pasted on the other side of the acrylic board. It is.
FIG. 5 shows a photograph of the display device taken from the display portion side in a state where the obtained display device was placed in a dark room and the white light emitting diode was turned on.

(Example 3)
Instead of omitting the opaque white sheet, place the display device at a distance of 20 mm from the wall of the building, and replace it with the letters (not shown for public order and morals violations) and PUB SNACK and (not shown for public order and morals violations) A display device was obtained under the same conditions as in Example 2 except that the characters were displayed in two rows, and images were taken under the same conditions as in Example 2. A photograph of the photographed display device is shown in FIG.

It is a schematic side view of the display apparatus which concerns on this Embodiment. It is a schematic side view of the display apparatus which concerns on this Embodiment from which arrangement | positioning of a light source differs from FIG. It is a schematic side view of the display apparatus which concerns on this Embodiment from which the structure of a reflection part differs from FIG. It is a figure which shows the photograph of the state which lighted the light source of the display apparatus of Example 1. FIG. It is a figure which shows the photograph of the state which lighted the light source of the display apparatus of Example 2. FIG. It is a figure which shows the photograph of the state which lighted the light source of the display apparatus of Example 3. FIG. It is a figure for demonstrating the translucent display board of a prior art example. It is a figure for demonstrating the translucent display board of the prior art example different from FIG.

Explanation of symbols

10, 10a, 10b Display device 12 Transparent plate 14 Display unit 16 Light source unit 18 Reflecting unit 18a Projection area 20 Reflecting surface

Claims (6)

  A transparent plate, a colored display portion provided on the front side of the transparent plate and made of characters or figures, or a combination thereof; and a light source portion configured to introduce substantially the entire amount of light into the transparent plate; A display device comprising a reflective portion provided substantially in contact with the transparent plate on the back side of the transparent plate, and a reflective surface provided on a side of the display portion facing the inside of the transparent plate. .   The display device according to claim 1, wherein the reflection surface is a rough surface.   The display device according to claim 1, wherein a projection area of the display unit of the reflection unit is formed on a rough surface.   The display device according to claim 1, wherein light from the light source unit is introduced into the transparent plate from a side end surface of the transparent plate.   The light source of the said light source part is a light emitting diode, The display apparatus of any one of Claims 1-4 characterized by the above-mentioned.   The display device according to claim 1, wherein the transparent plate has a thickness of 3 to 10 mm.