JPH0755580Y2 - Backlit sign - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large internally illuminated signboard installed outdoors for advertisement, display, etc.

[0002]

2. Description of the Related Art Generally, in this type of internally illuminated signboard, an outer peripheral edge portion of a rectangular acrylic resin face plate is fitted into a peripheral groove holding portion of a rectangular frame body, and face plates are provided on front and rear faces of the frame body, respectively. A lighting device mounted and provided inside the frame illuminates the illumination light from behind the face plate. Because of the large size of this internally illuminated signboard, the face plate is deflected by strong wind pressure when it is exposed to strong winds or gusts, and is dislocated from the frame or damaged, or it is damaged by hitting the lighting equipment inside the frame. It is easy to do.

Conventionally, in order to prevent this, the thickness of the face plate is increased, or a reinforcing plate made of acrylic resin is further attached to the back face of the face plate to increase the strength of the face plate.

[0004]

However, although such a conventional one increases the strength of the face plate so as to withstand strong winds and gusts, there is a limit, and the face plate bends during a gust of a typhoon, and the frame body There is a problem in that it may be dislocated from or damaged, or it may be damaged by hitting a lighting device inside the frame. In addition, the face plate is heavy in weight, the workability is poor, and the cost is high. Further, when the reinforcing plate is attached to the back surface of the face plate, there is a problem that the effect of the signboard is lowered due to the shadow of the reinforcing plate caused by the illumination light.

An object of the present invention is to provide an internally illuminated signboard that solves the above conventional problems.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a face plate flexure preventive tool in a frame body to prevent the flexure of the faceplate inside due to wind pressure as much as possible, and to make the flexure preventive tool transparent. This prevents the generation of shadows due to light.

That is, in the internally illuminated signboard of the present invention, the outer peripheral edge portion of the translucent synthetic resin face plate is held by the peripheral edge holding portion of the frame body, and the face plates are attached to the front and rear surfaces of the frame body. The lighting fixtures are attached to the fixed supports, and the illumination light is emitted from the back of the face plate, respectively, and the flexible synthetic resin anti-deflection tool corresponding to the central part of the face plate or the peripheral part of the central part The anti-deflection tool has receiving portions at both ends of the rod-shaped body, the rod-shaped body is attached to the support body substantially horizontally in the front-rear direction of the frame body, and the receiving portion faces the face plate with a gap. It was made.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In the drawings, 1 is a frame, 2 is a face plate, 3 is a support, 4 is a lighting fixture, and 5 is a deflection preventing tool.

The frame 1 is formed by framing a frame material made of metal or the like, and is generally a quadrangular frame.
A groove-shaped holding portion 11 for holding the face plate 2 is provided on the inner peripheral edge of the frame body 1. The holding portions 11 are provided on the inner peripheral edge portions on the front and rear sides of the frame body 1.

The face plate 2 is made of a translucent synthetic resin such as acrylic resin or polycarbonate resin. The face plate 2 has advertisements, displays, etc. on its surface, and the outer peripheral edge portion is fitted and held in the holding portion 11 of the frame body 1 as shown in FIG. The face plates 2 are attached to the front and rear surfaces of the frame body 1 so as to face each other.

The support 3 is for mounting the lighting fixture 4 and the deflection preventing tool 5 in the frame 1. The support 3 is generally a vertical crosspiece, and is spanned in the frame 1 in the vertical direction at appropriate intervals. The support body 3 is fixed in the frame body 1 so as to be located substantially in the center between the facing face plates 2. In addition, the support 3 is not necessarily limited to the above vertical crosspiece,
It may be a plate-like body that divides the inside of the frame body 1 into two parts.

As the luminaire 4, a fluorescent lamp is generally used, and a plurality of luminaires are attached to the front and rear surfaces of the support 3 facing the face plate 2. This luminaire 4 illuminates illumination light from behind the face plate 2. The mounting of the lighting fixture 4 and the support 3 is not particularly limited, and a conventional method of appropriately using a mounting tool may be adopted.

The deflection preventing tool 5 is made of a transparent synthetic resin such as acrylic resin, polycarbonate resin or polyvinyl chloride. The deflection preventing tool 5 has receiving portions 52 having a diameter larger than that of the rod-shaped body 51 at both ends of the rod-shaped body 51. The rod-shaped body 51 has an appropriate cross section such as a circle or a square. The receiving portion 52 receives the face plate 2 so as not to bend due to wind pressure, and is formed into a container shape having a wide opening such as a bowl shape as shown in FIG. 3, and the bottom portion of the container is connected to the rod-shaped body 51. ing. Since the receiving portion 52 is positioned so as to face the face plate 2 as described later, when the receiving portion 52 is formed in a container shape having a wide opening such as a bowl shape as shown in FIG.
Even if it comes into contact with, it becomes a line contact and the shadow of the receiving portion 52 due to the illumination light is not generated, which is preferable. The receiving portion 52 may be in the shape of a plate piece or the like.

One or a plurality of the deflection preventing tools 5 are provided in the frame body 1 corresponding to the central portion of the face plate 2 where it easily bends or the peripheral portion of the central portion. As shown in FIGS. 1 and 2, the deflection preventing tool 5 has a rod-shaped body 51 attached to the support body 3 substantially horizontally in the front-back direction of the frame body 1, that is, in the direction substantially orthogonal to the face plate 2. For example, when the supporting body 3 is a vertical crosspiece, the intersection of the rod-shaped body 51 and the supporting body 3 may be fixed by a suitable fitting such as a band. In addition, the receiving portion 52 includes the face plates 2 and 5
Receiving part 5 with illumination light that is opposed to each other with a gap of about mm
The shadow of 2 does not occur.

It should be noted that the number of the deflection preventing tools 5 may be appropriately set according to the shape and size of the face plate 2 so that the face plate 2 does not bend inward even when the face plate 2 receives wind pressure. In addition, FIG. 4 shows an example in which the internally illuminated signboard of the present invention is used by being attached to the upper end of the column 6.

[0016]

As described in detail above, in the internally illuminated signboard of the present invention, the deflection preventing tool is provided inside the frame corresponding to the central portion of the face plate or the peripheral portion of the central portion, and the rod-shaped body of the deflection preventing tool is the frame. It is attached to the support body almost horizontally in the front-back direction of the body, and the receiving parts at both ends of the rod-shaped body face the face plate with a gap, so when faced with strong wind or gust, the face plate receives wind pressure. Also, the face plate is less likely to bend inward, so that the face plate can be prevented from coming off or being damaged, and the bending of the face plate does not damage the lighting equipment inside the frame. Moreover, since the face plate does not become heavy unlike the conventional case, the construction is easy and the cost can be reduced.

Further, since the anti-deflection tool is made of transparent synthetic resin and the both end receiving portions of the anti-deflection tool are opposed to the face plate with a gap therebetween, a shadow of the anti-deflection tool due to illumination light is generated. Moreover, the effect as a signboard is not impaired.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of an internal lighting signboard of the present invention.

FIG. 2 is a cross-sectional view showing an embodiment of the internally illuminated signboard of the present invention.

FIG. 3 is a perspective view showing an example of an anti-deflection tool for an internally illuminated signboard according to the present invention.

FIG. 4 is a perspective view showing an example of mounting the internally illuminated signboard of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 11 Holding part 2 Face plate 3 Support 4 Lighting fixture 5 Deflection preventive tool 51 Rod-shaped body 52 Receiving part

Claims (1)

[Scope of utility model registration request] 1. An outer peripheral edge portion of a transparent synthetic resin face plate 2 is held by a peripheral edge holding portion 11 of the frame body 1, and face plates 2 are attached to front and rear surfaces of the frame body 1 and fixed in the frame body 1. The lighting fixtures 4 are attached to the supported supports 3 so that the illumination light is emitted from the back of the face plate 2, respectively, and the deflection preventive device 5 made of transparent synthetic resin is provided in the frame body 1 at the central portion or central portion of the face plate 2. The deflection prevention tool 5 is provided corresponding to the peripheral portion, and the deflection prevention tool 5 is a rod-shaped body 51.
Of the rod-shaped body 51 is attached to the support body 3 substantially horizontally in the front-rear direction of the frame body 1, and the receiving portion 52 faces the face plate 2 with a gap. Illuminated signboard.