JPH08138428A - Display device using surface light source device - Google Patents

Abstract

PURPOSE: To transmit various informations according to a situation by using a surface light source device. CONSTITUTION: A display device is composed of a light source part 1 and a light conductive display part 2, and the light source part 1 is constituted so as to have a lamp 6 or the like on a pinball stand, and a guide member 7 is arranged on the peripheral edge of its opening 3a. The light conductive display part 2 is constituted of a locking tool 11 and a light conductive panel 8, and the locking tool 11 can be inserted into and extracted from the guide member 7. The light conductive panel 8 is constituted by sticking a reflecting sheet 13 to one side surface or the like of a transparent acrylic plate 12 and a diffusing sheet 14 to its other surface side, and characters such as 'a great hit' are recorded on the diffusing sheet 14. Since the light conductive panel 8 on which plural kinds of different characters or the like are recorded can be replaced according to a situation, information can be flexibly transmitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device using an edge light type surface light source device which emits light in a plane.

[0002]

2. Description of the Related Art Conventionally, in a display of an office automation equipment such as a word processor, a system in which a fluorescent tube is arranged on the back surface of the liquid crystal display has been generally used. However, since such a backlight type cannot fully meet the demand for thinning, a type called an edge light type has recently been developed.

This surface light source device is of an edge light type which is provided with a lamp tube which is a light source and a light guide panel, in which the light source is arranged not at the back surface of the light guide panel but at one edge thereof. . Further, the light guide panel is configured by laminating a diffusion sheet on one side of both sides of a transparent acrylic plate and a reflection sheet on the other side, and when light from a lamp tube enters from one edge of the light guide panel, The light spreads in the acrylic plate, is reflected by the reflection sheet, and is emitted from the entire one side surface through the diffusion sheet.

[0004]

By the way, as an application of the above-mentioned surface light source device, there is a case where characters are written on a light guide panel to be used as a display device. But,
In the above-mentioned surface light source device, since the light guide panel is integrally connected and fixed to the lamp tube portion, even if an attempt is made to change the display content depending on the situation, this cannot be done and the display is fixed. Therefore, the information transmission had to be rigid. The present invention has been made in view of the above circumstances, and an object thereof is to provide an edge light type display device using a surface light source device capable of transmitting various kinds of information depending on the situation.

[0005]

In order to achieve the above object, a display device using a surface light source device of the present invention includes a light source portion fixed to a fixing member, a diffusion sheet and reflection on both side surfaces of a light guide plate. And a light guide display unit configured to emit light incident from a light source unit from one edge of the light guide plate inward of the light guide plate through a diffusion sheet, the light guide display unit being a light source. It is characterized in that it is detachably attached to the section.

[0006]

In the display device using the surface light source device of the present invention, the light guide display unit is provided so as to be attachable to and detachable from the fixed light source unit. Therefore, a plurality of types of light guide display units displaying different information are displayed. It is possible to change clothes.

[0007]

As described above, according to the present invention, since it is possible to change the light guide display section, it is possible to flexibly transmit information according to the situation.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a display device using the surface light source device of the present invention is applied to a display device for notifying a big hit state in a pachinko hall will be described with reference to FIGS. As shown in FIG. 1, the display device of the present invention comprises a light source unit 1 and a light guide display unit 2 detachably assembled to the light source unit 1.

First, the light source section 1 will be described. As shown in FIG. 2, the curtain plate 3 arranged above the pachinko machine is provided with vertically long openings 3a corresponding to the respective pachinko machines. The lamp case 4 is attached with screws or the like from the back surface side so as to cover the opening 3a. On the surface of the lamp case 4 facing the opening 3a, a light-transmitting transparent plate 5 is fitted and attached. Further, three lamps 6 are housed in the lamp case 4 in a state that they are vertically arranged at predetermined intervals, and the light from each lamp 6 is radiated forward through the translucent plate 5. . The lamp 6 is not limited to an incandescent lamp,
You may use a fluorescent tube, a flash lamp, etc.

A guide member 7, which is a constituent element of the light source unit 1, is provided at a position corresponding to each opening 3a on the front surface of the curtain plate 3. The guide member 7 is a light guide display unit 2 described later.
Is for guiding the insertion and holding the display unit 2 together, and is formed in a C-shaped cross section that opens to the front side and the upper side, but the lower surface is closed by the bottom plate 9. Further, a limit switch 10 is provided at the center of the upper surface of the bottom plate 9, and the lower end surface of the light guide display unit 2 is turned on by setting the light guide display unit 2 in the guide member 7. I am doing it. The limit switch 10 is incorporated in a lighting circuit (not shown) of each lamp 6 described above, and each lamp 6 is automatically turned on / off by turning on / off the limit switch 10. However, it can be done manually. In addition, a light emitting diode is used to cut off the light from the light emitting diode to turn on the lamp 6, and a part of the light guiding display unit 2 is located on the light source unit 1 side. It may be configured such that the lamp 6 is turned on by bringing a part of the lamp 6 into a conductive state.

Next, the light guide display section 2 will be described with reference to FIGS.
In the following description, the light guide display unit 2 is composed of the light guide panel 8 and the locking tool 11 attached to one end of the light guide panel 8. The locking tool 11 has a pair of flange pieces 11a at the side edges of the portion that is press-fitted into one end edge of the light guide panel 8. By inserting both flange pieces 11a into the guide member 7, the light guide display section 2 is provided. Is held so that it can be inserted and removed freely.

The light guide panel 8 is formed in a rectangular shape by a transparent acrylic plate 12, and a white reflecting sheet 13 made of a non-translucent material is provided on one side of the light guide panel 8 and emitted on the other side while scattering light. Semi-transparent diffusion sheets 14 are attached to each other. The surface of the diffusion sheet 14 facing the acrylic plate 12 is provided with a "big hit" character. The light guide panel 8
6 are prepared with some other indications (such as "lucky table") as shown in FIG. 6, and are selectively used according to the situation.

Further, in this embodiment, the reflection sheet 13 is also attached to the other peripheral edge of the acrylic plate 12 excluding the edge facing the light source section 1 so that light does not leak from these. Furthermore, as shown in FIG. 5, on the surface of the acrylic plate 12 on which the reflection sheet 13 is attached, a mesh pattern 15 of white dots for diffusing light to the opposite surface is silk-printed. The spot pattern 15 is attached to the light source unit 1 as well.
Is arranged roughly so that it becomes denser as it gets farther away, which allows light to be uniformly emitted to the entire area of the surface on the diffusion sheet 14 side. Although not shown in the drawing, in order to protect the reflection sheet 13 and the diffusion sheet 14, the entire light guide panel 8 is housed in a transparent acrylic casing. As another protection means, the surfaces of both sheets 13 and 14 may be coated with resin.

Next, the operation of this embodiment will be described. When a specific pachinko machine is in a so-called "big hit" state, an employee attaches the light guide display unit 2 to the guide member 7 in order to inform the customer in the store of this.
First, the flange piece 11a of the locking tool 11 is inserted from above the guide member 7. When the bottom plate 9 is inserted, the limit switch 10 is pushed by the lower end of the locking tool 11, and each lamp 6 is turned on by a lighting circuit (not shown). Then, the light from each lamp 6 enters from the side edge of the acrylic plate 12, spreads in the acrylic plate 12, is reflected by each reflection sheet 13, and is emitted from the entire front surface through the diffusion sheet 14. As a result, the characters "big hit" emerge, and the fact that the jackpot is in effect is reported (see FIG. 6).

Further, when the jackpot state is completed, the light guide panel 8 is removed from the guide member 7. For this purpose, the light guide panel 8 is moved upward and the locking member 11 is pulled from the guide member 7. You can get out.

Further, the open table which has been hit by a jackpot on that day is replaced with the light guide panel 8 on which "Lucky stand" is displayed. In this case also, the light guide panel 8 is simply replaced. Therefore, it is possible to easily change to another display.

That is, in this embodiment, the light guide display section 2 can be attached to or removed from the light source section 1 by inserting the locking tool 11 provided on the light guide panel 8 into the guide member 7. You can Therefore, since the light guide panel 8 displaying the desired content can be selected and replaced, the information does not become rigid unlike the conventional art.
Enables flexible information transmission. Moreover, in such a case, since only the light guide display section 2 needs to be replaced, it is not necessary to replace the entire surface light source unit each time, and the mounting work is easy and the cost is excellent. In addition, the light guide panel 8
The locking tool 11 and the locking tool 11 may be configured to be separable, and only the light guide panel 8 may be replaced. Needless to say, the above effect can be obtained even in such a case.

The present invention is not limited to the above-mentioned embodiments, but can be modified and implemented as follows, for example, and these embodiments also belong to the technical scope of the present invention. (1) In this embodiment, the light guide panel 8 is configured to be detachable by inserting the locking tool 11 into the guide member 7, but other fixing means may be used as long as it is detachable. For example, a resin clip may be integrally formed on the light guide panel, and the resin clip may be elastically press-fitted into and engaged with the hole on the light source section side, or may be a hanging method.

(2) Further, in this example, the case where the light guide display portion 2 is mounted at a right angle to the mounting surface (curtain plate) 3 is shown, but it may be assembled along the mounting surface. Also in this case, it goes without saying that the light guide display section is premised on being removable from the light source section.

(3) In this example, the case where the invention is applied to a pachinko hall is shown. However, in addition to this, for example, at the reception and the like, indications such as "during reception" and "reception completed" are displayed by changing the light guide display section. It can also be used for transmitting various other different information.

(4) In this example, characters and the like are used for the diffusion sheet 1.
Although it is described in No. 4, it may be described in the surface of the reflection sheet facing the acrylic plate, the side surface of the acrylic plate, or the casing (not shown).

(5) In this example, the light guide panel 8 on which a plurality of different characters are displayed is prepared, and the light guide panel 8 is changed according to the situation. May be provided so as to be attachable to and detachable from the acrylic plate, and the reflection sheet or the diffusion sheet may be replaced with one in which different characters or the like are written depending on the situation.

(6) In this embodiment, the light guide panel 8 is
A reflection sheet 13 is attached to one side surface of the acrylic plate 12, and light incident from one side edge is reflected by the reflection sheet 13.
Although the light is emitted from the side surface opposite to the above, the light guide panel is configured by stacking two acrylic plates with the reflection sheet sandwiched therebetween, and the light is emitted from both side surfaces respectively. It may be. In such a case, it is possible to visually recognize the characters from both sides by attaching a diffusion sheet having characters or the like on both sides of the light guide panel. In addition, the present invention can be variously modified and implemented without departing from the scope of the invention.

[Brief description of drawings]

FIG. 1 is a perspective view showing the whole of the present embodiment.

FIG. 2 is a plan sectional view showing a mounting portion.

FIG. 3 is a vertical cross-sectional view showing a light guide panel.

FIG. 4 is a cross-sectional view showing a light guide panel.

FIG. 5 is a plan view showing a spot pattern of a light guide panel.

FIG. 6 is a perspective view showing a state where a light guide display unit is attached to a guide member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Light source part 2 ... Light guide display part 12 ... Acrylic plate (light guide plate) 13 ... Reflective sheet 14 ... Diffusion sheet

Claims (1)

[Claims] 1. A light source section fixed to a fixing member, a diffusion sheet and a reflection sheet being laminated on both side surfaces of the light guide plate, and the light source extending inward from the one end edge of the light guide plate. Edge light type surface light source, comprising: a light guide display unit that emits light incident from a light source through a diffusion sheet, the light guide display unit being detachably provided in the light source unit. A display device using the device.