JP2012037643A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thin illumination display device with a simple configuration.SOLUTION: The display device comprises a flat plate like display member composed of a transparent light conduction member. The display member is supported by a frame-like supporting frame. A light source including a plurality of LED elements is fixedly housed in the supporting frame. The plurality of LED elements in the light source are arranged along a longitudinal direction of an outer side end face of the display member while facing at least the outer side end face. The emission light beams of the LED elements are entered into the display member through the end face of the display member.

Description

  The present invention relates to a display device used for illumination-type advertisement using a light emitting diode (hereinafter referred to as LED) as a light source.

  FIG. 8 shows a conventional example of a display device using LEDs as light sources. Such a display device is conventionally known from Patent Document 1 and the like.

  In FIG. 8, reference numeral 50 denotes an illumination type display device using an LED as a light source. The display device 50 is composed of a light-guided transparent plastic, and includes a main body 51 on which characters, graphics 51a, etc. are engraved. A substrate 53 is arranged at a predetermined interval on the back side of the main body 51, and the LED 52 mounted on a printed circuit board or the like is supported by the substrate 53. The substrate 53 is supported and fixed to the back plate 54. The LED 52 emits light via the power supply / control device, and the main body 51 is illuminated from the back surface, thereby improving the display effect by, for example, raising the characters or figures 51a displayed on the surface of the main body 51 by engraving or the like. Can do. Further, by controlling the light emission of the LED 52 by the power source / control device so as to blink the LED 52 or change the emission color, the appeal to the surroundings can be further increased.

Utility Model Registration No. 3138741

  However, in such a conventional device, the display device main body 51 is illuminated by the LEDs 52 from the back surface, so that the main body 51 is equivalently illuminated between the main body 51 and the LED 52 serving as an illumination light source. Therefore, there is a disadvantage that the thickness of the entire apparatus is increased. In addition, in order to make the light amount distribution on the surface of the main body 51 uniform, it is necessary to provide a reflecting means or the like behind the LED 52, and there is a disadvantage that the configuration becomes complicated.

  An object of the present invention is to provide an illumination type display device having a small thickness and a simple configuration in order to eliminate the disadvantages of the conventional device as described above.

  In order to solve the above problems, the present invention includes a flat display body made of a transparent light guide material, and the display body is held by a frame-shaped holding frame, and a plurality of LED elements are provided in the holding frame. A plurality of LED elements of the light source are juxtaposed in the longitudinal direction of the end surface facing the outer end surface of at least one side of the display body, and display is performed from the end surface of the display body. The light emitted from the LED element is incident on the inside of the body.

  In the present invention, the display body is made of a transparent light guide material in which a fine light diffusing agent is dispersed and mixed, and further on the back surface facing the surface to be the display surface of the flat display body. A reflector can be provided.

  It is also possible to control the lighting order of the LED elements that illuminate the holder, the lighting intensity, the lighting time, and the like. And it is good for the said display body to be comprised freely with respect to a holding frame.

  According to the present invention, the display body on the flat plate made of the transparent light guide material in which the fine light diffusing agent is dispersed and mixed is held by the frame-shaped holding frame, and the outer side of at least one side of the display body. A plurality of LED elements serving as light sources are juxtaposed in the longitudinal direction of the outer end face between the end face and the holding frame, and the display element is illuminated from the side end face by the LED element, so that no space for illumination on the back side of the display body is required. Thus, the thickness of the display device can be reduced and the configuration can be simplified.

The front view which shows the external appearance of the display apparatus by the Example of this invention. The plane sectional view which meets the II-II line in Drawing 1. The plane sectional view which expands and shows each the A section and B section in FIG. The partial expanded front sectional view which expands and shows the IV section in FIG. The perspective view which shows the external appearance of the display apparatus by the Example of this invention. The disassembled perspective view which shows the structure of the display apparatus by the Example of this invention. The partial expansion perspective view which expands and shows the VII part of the light source body 2 in FIG. The longitudinal cross-sectional view which shows the structure of the conventional display apparatus.

  Embodiments of the present invention will be described with reference to examples shown in the drawings.

  1 to 7 show the structure of a display device according to an embodiment of the present invention.

  As shown in FIGS. 1 and 5, the external appearance of the display device of the present invention is configured by holding the outer peripheral edge of a vertically long rectangular flat plate-like display body 1 with a frame-shaped holding frame 3. The display body 1 is formed of a flat light guide material made of a transparent acrylic resin or the like in which a fine light diffusing agent is dispersed and mixed. A light source body 2 having an LED element for illuminating the display body 1 is accommodated in a holding frame 3 so that light emitted from the LED element is incident into the display body 1 from the outer end face of the flat display body 1. The LED element is disposed opposite to the outer end face of the display body 1 and fixed.

  As can be understood from FIGS. 2, 3, and 6, the frame-shaped holding frame 3 is formed of an aluminum drawing material having an L-shaped cross section. The holding frame 3 is divided into four divided frames 31 to 34 having an appropriate length capable of holding the four sides of the display body 1. The divided frames 31 to 34 are connected to each other by screws 37 via L-shaped connecting pieces 33 (33a to 33d) to form one frame-shaped holding frame 3. The holding frame 3 includes an auxiliary frame 4 having an L-shaped cross section for holding the display body 1 and fixing the light source 2 accommodated in the holding frame 3. The auxiliary frame 4 is divided into 2 to 4 divided auxiliary frames 41 to 44.

  A light source body 2 configured by fixing and supporting a plurality of LED elements 21 by a printed circuit board 22 is accommodated in a holding frame 3 that holds the display body 1, and is fixed to the holding frame 3. As shown in detail in FIG. 7, the light source body 2 has a plurality of LED elements 21 arranged on a printed board 22 in a straight line at an appropriate interval and fixedly supported. The printed circuit board 22 is provided with a connection terminal block 23 for connection to an external power source, and an internal connection terminal of the connection terminal block 23 is connected to the LED element 21 by a printed wiring 24. Further, an external connection line 26 is connected to an external connection terminal of the connection terminal block 23, and this connection line is connected to an external power source / control device (not shown) to control lighting of the LED element 21 of the light source body 2.

  Thus, the printed circuit board 22 of the light source body 2 on which the plurality of LED elements 21 are mounted is along the outer end surfaces of the two opposite sides in the longitudinal direction of the display body 1 as is apparent from FIGS. 2, 3, and 6. It is fixed to the divided frames 31 and 33 by screwing. The LED elements 21 of the light source body 2 fixed to the frames 31 and 33 are arranged so as to face the outer end surfaces of the two sides 11 and 13 in the longitudinal direction of the display body 1 with an appropriate interval.

  At the place where the light source body 2 is disposed, the auxiliary frame 4 (41, 43) having an L-shaped cross section is provided with spacers 45, 46, etc. for determining the mounting height of the auxiliary frame from the printed circuit board 22 of the light source body 2. And are fixed to the divided frames 31 to 34 by screws 35, 36 and the like. Further, the auxiliary frame 4 (42, 44) is directly screwed to the divided frames 32, 34 with screws 38 at locations where the light source body 2 is not disposed.

  At this time, as shown in FIG. 3, the sides 31 a and 33 a parallel to the display surface of the display body 1 of the divided frames 31 and 33 and the sides 41 a and 43 a parallel to the display surface of the display body 1 similarly to the auxiliary frames 41 and 43. A gap in which the display body 1 can be inserted is formed between them. Of course, a gap in which the display body 1 can be inserted is also formed between the divided frames 32 and 34 and the auxiliary frames 42 and 44 of the holding frame 3 in the short side portion of the display body 1 where the light source body 2 is not arranged. Like that.

  The position of the display body 1 inserted in the gap formed between the holding frame 3 and the auxiliary frame 4 is fixed, and the facing distance between the outer end face of the display body 1 and the LED element 21 of the light source body 2 is kept constant. As a positioning means for this purpose, as shown in FIG. 4, a connection screw 37 used when the divided frames 31 to 34 are connected via L-shaped connection fittings 33a to 33d is used. That is, the length of the connecting screw 37 is set to a predetermined length so that the tip of the connecting screw 37 is brought into contact with the outer end surfaces 11 to 14 of the display body 1, whereby the holding frame 3 and the outer end surface of the display body 11 are The interval between is set to a predetermined interval.

  When the display body 1 is inserted into the holding frame 3 or pulled out from the holding frame 3 for replacement, for example, the divided frame 32 to which the right light source body 2 in FIG. 5 is fixed is removed from the holding frame 3. The right side of the holding frame 3 is opened. The display body 1 is inserted from the right side of the opened holding frame 3, and the display body 1 is pushed in along the gap formed between the upper and lower divided frames 32 and 34 and the auxiliary frames 42 and 43, thereby displaying the display body. 1 can be inserted into the holding frame 3. When the display body 1 is completely inserted into the holding frame 3, the display frame 1 holds this by closing the right side by connecting the divided frame 33 to which the light source body 2 is fixed to the right side of the holding frame 1. The holding frame 3 is configured integrally.

  In order to replace the display body 1, when the display body 1 is pulled out from the holding frame 3, it can be pulled out by an operation opposite to that at the time of insertion. The display device can also easily change the display content by inserting a new display body 1 into the holding frame 3 after being pulled out.

  When the display body 1 is replaced, the light source body 2 is not attached. Here, the gap formed by the upper and lower divided frames 32 and 34 and the auxiliary frames 42 and 44 is inserted as a guide. Since 1 does not hit the LED element 21 of the light source body 2 fixed to the holding frame, it can be safely inserted without damaging the LED element.

  The display 1 can display not only desired characters and figures on the front surface, but also can display desired characters and figures on the back surface opposite to the desired characters and figures. Furthermore, in order to increase the light emission efficiency from the display surface on the surface of the display body 1, it is preferable to attach a reflector made of a white sheet or the like on the back surface on which characters and figures are marked and displayed.

  When illuminated display is performed by the display device of the present invention configured as described above, the LED element 21 of the light source body 2 is turned on by connecting the external connection line 26 (see FIG. 7) to an external power source / control device. . As a result, the LED element 21 emits light, and the emitted light enters the display body 1 from the left and right end faces of the display body 1. The incident light is reflected and diffused in all directions by the fine light diffusing agent dispersed and mixed in the light guide constituting the display body 1, so that emitted light is emitted from the entire surface of the display body 1. become. This light enhances the display by illuminating the characters and figures displayed on the front surface of the display body 1 or on the back surface opposite to this surface, thereby enhancing the display effect.

  At this time, if the lighting order, intensity, lighting time, and the like of the plurality of LED elements 21 of the light source body 2 are controlled in time series, the display light can be temporally moved like a sign advertisement. Therefore, the display content of the display body is more prominent and the display effect can be further enhanced.

  In the above-described embodiment of the present invention, the two light source bodies 2 are disposed so as to be opposed to the outer end surfaces of the left and right sides of the display body 1, respectively, but one light source body 2 is used and at least the display body 1 is provided. The light source body 1 may be disposed opposite to the outer end face of any one of the four sides, and the light source body 1 is placed on all the outer end faces of the four sides of the display body 1 in order to make the display light of the display body 1 brighter. Can be arranged opposite to each other.

1: Display body 2: Light source body 21: LED element 3: Holding frames 31-34: Divided frame 4 (41-44): Auxiliary frame

Claims (5)

  A flat display body made of a transparent light guide material is provided, the display body is held by a frame-shaped holding frame, and a light source body having a plurality of LED elements is fixedly accommodated in the holding frame. A plurality of LED elements of the light source are juxtaposed in the longitudinal direction of at least one side of the display body in the longitudinal direction of the end face, and light emitted from the LED elements enters the display body from the end face of the display body. A display device characterized by the above.   2. The display device according to claim 1, wherein the light guide material constituting the display body is made of a transparent plastic in which a fine light diffusing material is dispersed and mixed.   3. The display device according to claim 1, wherein a reflector is provided on a back surface of a surface to be a display surface of the flat display body.   4. The display device according to claim 1, wherein a lighting order, lighting intensity, lighting time, and the like of the plurality of LED elements of the light source body are controlled. 5.   5. The display device according to claim 1, wherein the display body is configured to be able to be inserted into and removed from a holding frame.

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