JP2007232790A - Illumination type display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination type display apparatus in which a whole face of a display plate is evenly illuminated and which is therefore made lighter in weight, has a simpler configuration and requires the less number of light sources and is made more inexpensive than the conventional display apparatus in which a side face of a light guide plate is projected with illumination light. <P>SOLUTION: Projection space is provided at a back side of the display plate, and the light source is provided at a side of the projection space, and the display plate is illuminated from the rear face by light which is projected from the light source to the projection space. By providing a scattering plate at the rear side of the display plate, the projection space may be formed at the rear side of the scattering plate. By arranging a reflective material and by providing the projection space between the reflective material and the display plate or the scattering plate, the light projected from the light source to the projection space can be reflected by the reflective material and enter the display plate or the scattering plate. The display plate is made a single transparent plate in which a sign is displayed, or an overlapped plate in which a sign display plate whose sign is displayed outside through an open aperture is overlapped with the transparent plate. The display plate, the light source and the scattering plate may by attached to a frame of a desired shape to form an independent type, or may be incorporated into a member such as a door or a wall inside/outside of a building to form a member built-in type. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an illuminating display device that illuminates a display board with light from the back, and is used for advertising / promotional signs, guide signs, emergency exit displays in buildings, signs for door signs, channel letters, etc., and elevator floor display. It can be used as a board.

  There are various types of illumination display devices, and one of them is shown in FIG. This illumination type display device is a double-sided illumination type, and two light guide plates C each having a V-shaped groove D formed in a lattice shape on one side inside a rectangular frame A are placed back to back. When the display plate E is disposed on the outside of the light guide plate C and the light from the LED (light source) B mounted on the inside of the frame A is irradiated to each light guide plate C, the light is transmitted through the light guide plate C and scattered by the grooves D. Thus, the display board E is illuminated from the back. The display board E is not limited to a plate-like member, and may be a film-like member.

The conventional illumination type display device shown in FIG. 8 has the following problems.
(1) Since the light from the light source B is transmitted through the light guide plate C, the amount of light is attenuated in the light guide plate C and the illumination tends to be insufficient. To compensate for this, a high output light source is required.
(2) Since the light guide plate C is generally as thick as 8 mm to 10 mm and heavy, the illumination type display device using it is also thick and heavy and difficult to handle. In particular, in the case of the double-sided illumination type, since the light guide plate C becomes two, there is a problem that the illumination type display device becomes thicker and heavier.
(3) Since the light guide plate C is generally expensive, the completed illumination display device is also expensive.

  The present invention provides an illumination-type display device that easily scatters light, can be efficiently illuminated with a small amount of light, and is thin, lightweight, and inexpensive.

The illumination type display device of the present application is the illumination type display device that irradiates the indicator displayed on the display plate from the back side of the display plate, as described in claim 1, wherein the display plate is on the front side or the front side. Arranged on the back side, in the former, a projection space is provided on the back side of the display board, and in the latter, between the two display boards , a light source is provided on the side of the projection space, and the light source is projected onto the projection space. in which labeling of the display panel by the light is to be illuminated from the back of the display panel. The display plate and the scattering plate disposed on the back surface thereof are disposed on the front surface side or on the front surface side and the back surface side, respectively, and in the former case, on the back surface side of the scattering plate and in the latter case both scattering. projection space is provided between the plates, a light source on the side of the projection space, the light projected onto the projection space from the light source to illuminate from the back of the label of the panel is scattered by the scattering plate You can also. As described in claim 3, disposing the reflective material away from the display plate or the scattering plate on the back side of the display plate or the scattering plate , providing a projection space between the reflective material and the display plate or the scattering plate, The light projected from the light source into the projection space may be reflected by the reflecting material and enter the display plate or the scattering plate. As described in claim 4, the display plate is a single light-transmitting plate on which signs are displayed, or letters, numbers, symbols, signs, arrows, figures, etc. (collectively these “signs”) ") Can be a stack of sign display plates that are displayed as openings such as letters and pictures.

  The illumination type display device of the present application is as described in claim 5, wherein the display plate and the light source, or the display plate, the scattering plate, and the light source are attached to a frame of a desired shape, or are independent, or a door inside or outside the building. It is built into a member such as a wall or an elevator to form a member built-in type.

The illumination type display device according to claims 1 to 5 of the present application has the following effects.
(1) Since the projection space is provided on the back side of the display plate or the scattering plate and the light source is provided on the side thereof, the light from the light source is incident on the display plate or the reflector through the projection space. Can be illuminated.
(2) Since the projection space is provided, the weight can be reduced as compared with the case of projecting on the side surface of the conventional light guide plate.
(3) Even if two light sources for the front display panel and the rear display panel are not provided, the display panels on both the front and back surfaces can be illuminated uniformly, thereby simplifying the structure, reducing the number of light sources, and reducing costs. .

The illumination type display device according to claim 2 of the present application has the following effects because a scattering plate such as a prism plate or a diffusion plate is disposed on the back surface of the display plate.
(1) Since the light from the light source is reliably scattered by the scattering plate, the entire display plate is illuminated uniformly.
(2) Since the scattering plate is thinner than a conventional light guide plate, the attenuation of light is small, the display plate can be illuminated sufficiently brightly with a small amount of light, and the illumination type display device can be made thin and light.
(3) Since the prism plate and the diffusing plate are cheaper than the conventional light guide plate, it contributes to the cost reduction of the illumination type display device.

  In the illumination type display device according to claim 3 of the present application, since the reflecting material is arranged away from the back surface of the display plate or the scattering plate, the light reflected by the reflecting material is also incident on the display plate or the scattering plate. Even if it is an illumination type, a display board can be illuminated brightly.

In the illumination type display device according to claim 4 of the present application, the display plate is a single light transmitting plate on which a sign is displayed, or a sign display plate on which an indicator is displayed on the outside of the light transmitting plate. Therefore, there are the following effects.
(1) When the display plate is a single light transmitting plate, the structure of the illumination type display device is simplified.
(2) In the case where the display plate is a light-transmitting plate overlapped with a sign display plate, the light-transmitting plate is made of a material, or the surface is uneven, so that letters, numbers, symbols, signs, arrows, figures, etc. Even if it is difficult or impossible to print a sign or a film on which a sign is printed, it is not attached (not displayed on the display board). , And can be displayed in a blank pattern.

The illumination type display device according to claim 5 of the present application has the following effects.
(1) In the case of an illuminating display device in which a light source and a display plate, a light source, a display plate and a reflection plate are attached to a frame and used as a stand-alone type, It can be attached to the wall above the indoor door to display a door sign or exit, or it can be used near an indoor corridor or emergency staircase and used as an emergency staircase sign.
(2) In the case of an illumination type display device in which a light source and a display plate, a light source, a display plate, and a reflection plate are attached to members inside and outside a building, for example, indoor walls, floors, ceilings, windows, elevators, etc. The lighting display device does not protrude outside the door or wall surface, so it looks good and does not get in the way. Moreover, since the illumination type display device is thin, even if it is incorporated in members inside and outside the building, those members do not become particularly thick and can be standardized.

(Embodiment 1)
An example of an embodiment of the illumination type display device of the present invention will be described with reference to FIGS. This illumination type display device is a double-sided illumination type display device having both the front and back sides as display surfaces. The illumination type display device of the present invention can use a prism plate, a diffusing plate or the like thinner than the conventional light guide plate as the scattering plate, but this embodiment uses a prism plate and an LED as the light source.

  The illumination type display device shown in FIG. 1 has a modularized LED (light source) 2 attached to the inner surfaces of two opposite sides of a square frame 1 (FIG. 3). A prism plate (scattering plate) 6, a display plate 7, and a sign plate 8 are sequentially stacked from the frame 1 side to the outside between the peripheral frame 9 arranged and fixed on the outer periphery, and the scattering plate 6, display plate 7, sign plate The outer peripheral edge portion 8 is firmly fixed between the frame 1 and the peripheral frame 9 attached thereto. In this case, a projection space 10 is formed between the two scattering plates 6 facing each other, and the light source 2 is arranged on the side of the projection space 10 so that the light from the light source 2 is projected into the projection space 10. It is.

  The frame 1 can be made of any material such as metal, resin, and wood. An LED module 12 in which a large number of LEDs (light sources) 2 are attached to an elongated substrate 11 at fixed intervals is attached to the inner surfaces of the frame 1 facing each other. The LED can also be modularized by attaching it to a tape instead of a substrate. The LEDs can be individually attached to the frame 1 one by one without being modularized. The number, interval, emission color, etc. of the LEDs can be arbitrarily selected, and two or more emission colors can be combined and attached.

  As shown in FIG. 2, the scattering plate 6 has a prism surface 13 formed by regularly arranging a plurality of prism-shaped irregularities vertically and horizontally on one surface of a square light transmitting plate, and the other surface 14 is a flat surface. It has become. In the present invention, an existing prism plate or an improved prism plate can be used. Since the scattering plate 6 can scatter light in all directions, the light irradiated from the unevenness is uniformly irradiated from the entire scattering plate 6 and the entire surface of the display plate 7 is uniformly irradiated. The scattering plate 6 is preferably made of acrylic, glass or the like from the viewpoint of light transmittance, but may be made of other materials. In this embodiment, the scattering plate 6 is transparent, but a colored plate can also be used. Although the scattering plate 6 has a thickness of about 2 mm to 5 mm, a thinner one is preferable from the viewpoint of reducing the thickness of the illumination display device. In FIG. 1 and FIG. 3, the prism surface 13 of the scattering plate 6 is arranged toward the projection space 10 so that the light projected from the light source 2 to the projection space 10 is projected from the prism surface 13 onto the scattering plate 6. In some cases, on the contrary, the prism surface 13 may be disposed toward the display plate 7 side.

  The display plate 7 is a translucent plate material, and its shape, thickness, size, material, color and the like can be arbitrarily selected. In this embodiment, the display plate 7 has a shade like acrylic resin frosted glass, and is a scattering plate. 6 is a quadrangle having the same size as that of 6 and has a thickness of about 2 mm to 5 mm.

  As shown in FIG. 2, an arrow-shaped pattern (marker) 15 is cut out (displayed) on the sign board 8 and is displayed on the display board 7 when it is overlaid on the display board 7. The display board 7 under the sign board 8 is illuminated with light from the light source 2. The shape, thickness, size, material, color, etc. of the sign plate 8 can be arbitrarily selected. However, in this embodiment, a non-transparent metal plate or a colored resin plate that is translucent but hardly translucent is used. It is a quadrangle of the same size as the scattering plate 6 and has a thickness of about 1 mm to 2 mm.

  As shown in FIGS. 2 and 3, the peripheral frame 9 has a rectangular shape with a square-shaped cross-sectional frame-shaped member 19 including a side plate 16, an upper plate 17, and a lower plate 18. The side plate 16 is fixed to the outer periphery of the frame 1 with screws or the like, and the scattering plate 6, the display plate 7, and the sign plate stacked between the frame 1 and the side plate 16 and between the frame 1 and the upper plate 17. The outer peripheral edge of 8 is tightly sandwiched and fixed. In this case, a projection space 10 is formed between the two scattering plates 6 facing each other, and light from the light source 2 is projected onto the projection space 10. The peripheral frame 9 can be made of any material such as metal, resin, and wood.

  The illumination type display device of Embodiment 1 is used outdoors or indoors. In that case, when the light source 2 is turned on, the light from the light source 2 is projected onto the projection space 10, the light is scattered on the entire surface by the scattering plate 6, and the display plate 7 is reflected by the scattered light transmitted through the scattering plate 6. , And the light transmitted through the display board 7 is emitted to the outside from the cutout pattern 15 of the arrow opened in the sign board 8, and the sign of the arrow is illuminated brightly.

(Embodiment 2)
A second embodiment of the illumination display device of the present invention will be described with reference to FIG. This illumination type display device is a single-sided illumination type, the basic configuration is the same as that of the double-sided illumination type of Embodiment 1, and the difference is that the display plate 7 in FIG. The sheet-like or plate-like reflecting material 20 is arranged away from the scattering plate 6 superimposed on the back surface of the plate. For example, a white film can be used as the reflecting material 20. The white film has a reflection surface on the inner surface and does not transmit light to the outer surface. Further, a prism plate or a diffusing plate can be used as the reflector 20. In that case, it is preferable to arrange a back plate that does not transmit light on the back surface (the outer surface thereof) of the prism plate or the diffuser plate to prevent waste of light and increase the reflection efficiency from the reflection surface. The scattering plate 6, the display plate 7, and the sign plate 8 are fixed by being sandwiched between the frame 1 and the peripheral frame 9 attached to the outer periphery thereof.

  The illumination display device of Embodiment 2 can also be used outdoors or indoors. When the light source 2 is turned on, light from the light source 2 is projected onto the projection space 10, and the light is scattered on the entire surface by the scattering plate 6. The light reflected by the reflecting material 20 is also incident on the scattering plate 6, scattered by the entire surface of the scattering plate 6, and irradiated from the back surface of the display plate 7 with the scattered light. The light transmitted through the display board 7 is emitted to the outside from an arrow drawing pattern 15 opened in the sign board 8, and the arrow sign is illuminated brightly.

(Embodiment 3)
In the illumination type display device of the present invention, the scattering plate 6, the sign plate 8, and the reflecting material 20 are not necessarily required. When the scattering plate 6 is not provided, the light projected from the light source 2 to the projection space 10 directly irradiates the display plate 7. When the sign board 8 is not provided, signs such as letters, numbers, symbols and figures are directly displayed on the display board 7. The display can be performed by any method such as printing, spraying, and pasting a sticker on which a sign is displayed.

(Embodiment 4)
The frame of the illumination type display device of the above embodiment is a square, but the shape of the frame is other shapes, for example, a circle shown in FIG. 5 (a), an S-shape shown in FIG. 5 (b), or a star shape. In this case, each part of the illumination display device such as the scattering plate 6, the display plate 7, the sign plate 8, and the peripheral frame 9 also matches the shape of the frame 1. Shape. In this way, the illuminated display device itself can be designed with characters (channel characters), symbols, and other decorative shapes.

(Embodiment 5)
In any of the above-described embodiments, the light source 2, the scattering plate 6, the display plate 7, the sign plate 8 and the like are mounted on the frame 1, and the four sides thereof are covered with the peripheral frame 9 to form an independent signboard, which is installed outside the room as it is. However, in the illumination type display device of the present invention, the light source 2, the scattering plate 6, the display plate 7, the sign plate 8 and the like are attached to a member 30 such as an outdoor door, an indoor wall, and an elevator. It can also be incorporated into a member built-in type. FIG. 6 shows an example in which the light source 2, the scattering plate 6, the display plate 7, the sign plate 8, etc. are built in the opening of the member 30 as an example of the member built-in illumination display device, and FIG. This is an example of being built in the opening. In the case of FIG. 6, since the scattering plate 6, the display plate 7, and the sign plate 8 are only on the inner surface of the member 30, the single-side illumination type display device is obtained. Since it is on both the inside and outside of the member 30, a double-sided illumination type display device is obtained.

  In the case of these built-in types, the frame 1 equipped with the light source 2, the scattering plate 6, the display plate 7, the sign plate 8, etc. can be built in the member 30, but the light source 2, scattering can be used without using the frame 1. The board 6, the display board 7, the sign board 8, etc. can be directly mounted on the member 30. In the case of FIG. 6, a housing space 31 is formed by cutting out a part of the member (wall) 30, and the module 12 of the LED 2 is attached to the inner surface upper wall 32 and the inner surface lower wall 33 of the housing space 31. A reflecting material 34 is disposed on the wall, and a scattering plate 6, a display plate 7, and a sign plate 8 are disposed in the front opening of the accommodation space 31. In the case of FIG. 7, the member (door) 30 is penetrated in the thickness direction (both front and back surfaces) to open the housing space 31, and the LED module 12 faces the inner wall upper wall 32 and the inner wall lower wall 33 of the housing space 31. And a scattering plate 6, a display plate 7 and a sign plate 8 are arranged on both outer sides thereof.

  The illumination type display device of the present invention can be widely applied as a display device such as advertising / promotional signs, guide signs, signs such as emergency exit displays and door signs, and embedded display devices such as elevator floor display buttons. .

The perspective view which shows an example of embodiment (signboard type display apparatus which uses both surfaces as a display surface) of the illumination type display apparatus of this invention. The disassembled perspective view of the illumination type display apparatus shown in FIG. Sectional drawing of the illumination type display apparatus shown in FIG. Sectional drawing which shows another example of embodiment (signboard type display apparatus which makes a single side | surface a display surface) of the illumination type display apparatus of this invention. (A), (b) is a top view which shows another example of embodiment of the illumination type display apparatus of this invention. Sectional drawing which shows another example of embodiment of the illumination type display apparatus of this invention (embedded display apparatus which makes one side a display surface). Sectional drawing which shows another example of embodiment (Embedded display apparatus which uses both surfaces as a display surface) of the illumination type display apparatus of this invention. Cross-sectional explanatory drawing which shows the conventional illumination type display apparatus.

Explanation of symbols

1 frame 2 light source (LED)
6 Scattering plate (prism plate)
7 Display board 8 Marking board 9 Peripheral frame 10 Projection space 11 Substrate 12 Module 13 Prism surface 15 Pattern 20 Reflector

Claims (5)

  In an illuminating display device that illuminates a display panel by irradiating light from the light source from the back side of the display board, a projection space is provided on the back side of the display board, a light source is provided on the side of the projection space, and the projection space from the light source An illumination type display device, wherein the display plate is irradiated from the back by the light projected on the screen.   In an illuminating display device that illuminates the display panel by irradiating light from the light source from the back side of the display panel, a scattering plate is provided on the back side of the display plate, the back side of the scattering plate is used as a projection space, The illumination display device is characterized in that the display plate is irradiated from the back with light that is provided with a light source and is projected from the light source to the projection space and scattered in the scattering plate.   The illumination type display device according to claim 1 or 2, wherein a reflective material is disposed on the back side of the display plate or the scattering plate away from the display plate, and projection is performed between the reflective material and the display plate or the scattering plate. An illumination type display device, characterized in that a space is provided, and light projected from a light source to a projection space is reflected by a reflecting material and enters a display plate or a scattering plate.   The illumination type display device according to any one of claims 1 to 3, wherein the display plate is a single light-transmitting plate on which the sign is displayed, or the sign is displayed on the outside of the light-transmitting plate. An illumination-type display device, wherein a sign display plate is overlaid. The illumination type display device according to any one of claims 1 to 4, wherein the display plate and the light source, or the display plate and the scattering plate and the light source are attached to a frame having a desired shape to be independent, or inside or outside the building. An illumination type display device that is incorporated in the member and made into a member built-in type.

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