KR20060114631A - Bright light emitting signboard - Google Patents

Abstract

A high brightness light emitting signboard is provided to manufacture the light emitting signboard easily by simplifying structure, and to improve visibility at a long distance by emitting light at high brightness. A high brightness light emitting signboard includes a signboard body having a side wall formed along an edge and a reflection plate formed in an inner bottom, a band type flexible substrate arranged along the side wall of the signboard body and provided with plural light emitting diodes protruded and arranged at regular intervals, a transparent epoxy resin layer formed in the signboard body to be as wide as the flexible substrate to lay the light emitting diodes, a backlight module(8) formed in the transparent epoxy resin layer to emit light from the light emitting diode and the reflecting plate, and a display panel formed in the backlight module to indicate characters and figures. The backlight module includes a light guide plate(9) guiding light from the light emitting diode, an expansion film(10) formed in the light guide plate to diffuse light from the light guide plate, and upper and lower prisms(11,12) perpendicularly emitting light from the display panel by refracting light from the expansion film.

Description

Bright light emitting signboard

1 is a view showing an installation state of a general road sign.

2 is a cross-sectional view of a high brightness luminous sign according to the invention taken along line II-II of FIG.

Figure 3 is an exploded perspective view of a high brightness luminous sign according to the present invention.

4 is a schematic cross-sectional view illustrating the structure of the backlight module shown in FIGS. 2 and 3.

5 is a view showing a state in which a high-luminance light emitting sign according to the present invention is applied to a road sign.

6A and 6B schematically show a state in which substrates are installed when a sign has a relatively large area.

(Explanation of symbols for the main parts of the drawing)

1: high brightness luminous signs 2: body

3: main body side wall 4: flexible substrate

5 reflector 6 light emitting diode

7: transparent epoxy resin layer 8: backlight module

9: light guide plate 10: diffusion sheet

11: lower prism 12: upper prism

13: display panel 14: solar cell

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to high brightness luminous signs, and more particularly to high brightness luminous signs, such as road signs or signs that can be easily identified at night using a high brightness luminous diode and can be more simply manufactured.

Generally, road signs are milestones provided at each point of the road to provide drivers or pedestrians with safe driving and accurate road information, and store signs provide shop information such as store names, contact numbers, etc. to customers. In particular, in the case of road signs for identification of roads or mutual names at night, various signs and characters are displayed on the reflector with fluorescent paint so that the contents can be easily identified by drivers or pedestrians. Illumination means such as fluorescent lamps are provided inside to be lit at night so that the surroundings can be easily identified at dark night.

On the other hand, the Republic of Korea Patent Registration No. 10-433716, to improve the visibility of the guide display or direction indication perforated on the sign, so that the contents of the sign can be easily identified at night, the guidance of the road in the form of letters or figures of various shapes on the surface An incision groove formed by laser cutting and marking of the indication or direction is formed, and a high-brightness electroluminescent sheet is coated on the transparent film on the front of a fixed size plate with a transparent acrylic plate, and a plurality of circuit boards are attached to the back of the fixing plate. LED display unit consisting of LED cell of epoxy resin material to which light emitting diodes are fixed and light diffusing material is added, solar cell unit which collects solar heat to obtain electricity, charging circuit unit to charge electric energy obtained from solar cell unit, and electric energy Battery unit for storing the control circuit for controlling the flashing light emission of the LED cell, A road sign composed of an illuminance sensor unit is disclosed.

However, the conventional road sign as described above has a configuration in which a plurality of panels including the LED display cell overlap each other, as can be seen from the figure, so that the structure is relatively complicated and light emitted from the LED display cell is The luminance is reduced by passing through the plurality of panels, and there is a problem in that information provided to the sign cannot be accurately recognized at a distance.

Accordingly, an object of the present invention is to provide a high-brightness luminous signage having a relatively simple configuration and improved visibility to accurately recognize information provided to the signage at a long distance by emitting light with high brightness.

The object as described above comprises: a sign body having side walls provided along edges and provided with a reflecting plate at an inner bottom; A band-shaped flexible substrate disposed in the shape of the main body along the sidewalls of the main body and provided at regular intervals on the inner side such that a plurality of light emitting diodes protrude toward the center; A transparent epoxy resin layer provided on the body by the width of the flexible substrate so as to fill the light emitting diodes; A backlight module provided on the transparent epoxy resin layer to emit light from the light emitting diode and the reflector to the outside with high brightness; It can be achieved by the high-luminance light-emitting signs according to the invention, characterized in that it comprises a display panel provided on the backlight module and displays information in the form of letters and figures.

The backlight module may include a light guide plate which functions to guide light provided from the light emitting diode to the outside, a diffusion film provided on the light guide plate to diffuse light from the light guide plate, and refracting light passing through the diffusion film. It includes a lower and upper prism for emitting in a direction perpendicular to the display panel.

The light emitting diodes are preferably white light emitting diodes.

In the above, the reflecting plate has a shape in which the central portion protrudes toward the light guide plate rather than the edge portion.

In the above, the flexible substrate may be disposed upright on the reflector 5 at a predetermined distance.

The information provided on the display panel is road information or shop information.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a view showing the installation state of a general road sign, Figure 2 is a cross-sectional view of a high-luminance light sign according to the invention taken along line II-II of Figure 1, Figure 3 is a high brightness light sign according to the present invention Exploded perspective view.

As shown in Figs. 1 to 3, the high brightness luminous signs 1 according to the invention comprise a plate-shaped road sign body 2 in which side walls 3 are formed along the outer circumferential edge. The body 2 is made of aluminum so as to have a light weight and a certain strength, and is made of a circle, triangle or rectangle according to the function of the road sign.

As shown in more detail in FIGS. 2 and 3, a reflecting plate 5 is provided on the inner bottom of the main body 2, and the reflecting plate 5 has an inner surface of the main body 2 having a mirror surface or The reflective sheet can be made by attaching. According to the invention a band-shaped flexible substrate 4 like FR 4 is arranged along the side wall 3 of the body 2. Such a flexible substrate 4 can be installed along the inner sidewall 3 of the sign of round, square and triangular shape by its flexible nature. Therefore, the high brightness luminous sign 1 according to the present invention can be easily installed even in the case of having a circular, triangular or square shape as described above by adopting the flexible substrate 4.

Light emitting diodes, for example white light emitting diodes 6, are provided at regular intervals on the inner side of the flexible substrate 4 along the side wall 3 such that they project toward the center of the body 2. The light emitting diodes 6 may be turned on by an AC power source or a DC power source using a solar cell. The flexible substrate 4 can be fixed to the main body 2 by providing a transparent epoxy resin layer 7 between the side walls 3 of the main body 2. By providing the transparent epoxy resin layer 7 in the main body 2 by the width of the flexible substrate 4, the flexible substrate 4 is embedded in the transparent epoxy resin layer 7.

In addition, the transparent epoxy resin layer 7 is filled in the space formed by the flexible substrate 4 as shown in FIG. 2 by the width of the flexible substrate 4 so that the flexible substrate 4 is transparent. Not only can it be firmly fixed to the main body 2 by the epoxy resin layer 7, but also the damage of the light emitting diodes 6 from flow or external shock can be prevented. As described above, the flexible substrate 4 is installed along the side wall 3 of the main body 2, and the plurality of light emitting diodes 6 provided on the flexible substrate 4 are transparent epoxy resin layer 7. When it is firmly fixed by, the backlight module 8 is provided on the epoxy resin layer 7 for emitting light emitted from the light emitting diode 6 at high luminance.

As shown in FIG. 4, the backlight module 8 includes a light guide plate 9 having a function of guiding light provided from the light emitting diode 6 to the outside, a diffusion film 10 provided on the light guide plate 9, and a lower portion thereof. And upper prisms 11 and 12. The light guide plate 9 guides the light emitted from the light emitting diode 6 to the outside, that is, toward the display panel 13 at an angle of approximately 18 to 20 占 as is well known. At this time, not only the light emitted from the light emitting diode 6 but also the light reflected from the reflecting plate 5 provided on the bottom of the main body 2 are also guided by the light guide plate 9 to the display panel 13 at the above angle. This light guide plate 9 is made of an acrylic transparent plate as is well known.

As described above, light provided from the light emitting diode 6 and reflected from the reflecting plate 5 and guided to the outside by the light guiding plate 9 at an angle of approximately 18 to 20 ㅀ is provided on the light guiding plate 9. It is deflected at an angle of 50 degrees by the diffuse reflection function of the film 10, is refracted at an angle of approximately 90 degrees while passing through the lower and upper prisms 11 and 12, and almost diverges outward from the display panel 13 when it is emitted. The light is emitted at a right angle from the surface of the display panel 13. On the other hand, the diffusion film 10 may be omitted by adding a diffusion function to the light guide plate 9.

The backlight module 8 as described above can be firmly fixed in the main body 2 by filling a transparent epoxy resin in the gap between the side walls 3 of the main body 2. On the backlight module 8 provided in the transparent epoxy resin layer 7, a display panel 13 made of a transparent polyacrylic plate is provided. The display panel 13 is also firmly attached to the main body 2 by filling an epoxy resin in the gap between the side walls 3 of the main body 2. The display panel 13 is provided with a fluorescent reflective sheet in the form of letters and figures for indicating information such as roads and trade names.

The high-luminance luminous signs 1 according to the present invention having the structure as described above are made of fluorescent reflective sheets for letters and figures for indicating information such as roads and trade names, and thus, in the daytime, Similarly, the information provided on the display panel 13 can be identified, and in the case of night, the information provided on the display panel 13 can be identified by the light emitting diodes 6 emitting light.

On the other hand, as described above, the light emitting diodes 6 used as a light source in the high-luminance light-emitting sign 1 according to the present invention are supplied with power directly from a power line or from a storage battery in which power is stored by a solar cell. Can be. This power supply selection can be determined depending on where and in what purpose the high brightness luminous signs according to the invention are used.

For example, when used as a signboard of a shop in a city or as a road sign, it may take a method in which power is directly supplied from a power line so that power can be supplied and disconnected by an on / off operation of a switch. As shown in 5, when used as a road sign installed in a place where worker's access is not easy, such as a highway, the light emitting diodes 6 are connected to the ambient light by using a solar cell 14, a storage battery, an illuminance sensor, and the like. Therefore, it can be configured to automatically turn on and off. Since this power supply scheme is well known, it is omitted herein for clarity of explanation.

On the other hand, the reflecting plate 5 for reflecting the light emitted from the light emitting diode 6 to the light guide plate 9 is because the light emitting diodes 6 are provided adjacent to the side wall 3 of the main body 2, the display panel ( The central portion of the reflecting plate 5 may be projected toward the light guide plate 9 rather than the edge portion so as to compensate for the difference in brightness between the edge portion and the central portion of 13) so as to have a uniform brightness as a whole.

Since it is limited to irradiate a portion where light emitted from the light emitting diodes 6 as described above is located at a distance exceeding approximately 50 cm, light emitted from the light emitting diodes 6 is displayed on the display panel 13. 6A and 6B, the flexible substrate 6 is disposed so as to stand upright on the reflecting plate 5 at a predetermined distance, that is, at least 50 cm, as shown in FIGS. 6A and 6B. Light emitted from the plurality of light emitting diodes 6 provided in 4) allows the sign 1 to be irradiated uniformly throughout.

The flexible substrate 4 preferably has a thickness of about 0.3 mm or less, so that the substrates 4 located in the middle part of the sign 1 are as invisible as possible from the outside. Therefore, even in the case of a sign having a relatively large area, the display portion of the sign 1 can be displayed with a uniform brightness as a whole without partially dark portions, so that the driver or customers can recognize the information accurately.

According to the high brightness light emitting sign according to the present invention having the structure as described above, while the light emitting diodes are arranged along the side wall of the main body having the side wall, the backlight module is provided to the main body, while the sign is provided on the backlight module. In addition, the present invention has a relatively simple configuration and is easy to manufacture, and the visibility can be improved so that the driver or customers can accurately recognize the information provided in the signage from a long distance by emitting light with high brightness.

Claims (7)

A sign body 2 having a side wall 3 provided along an edge and provided with a reflecting plate 5 at an inner bottom; One or more band-shaped flexible members disposed along the sidewalls 3 of the main body 2 in the shape of the main body 2 and provided at regular intervals on the inner surface such that the plurality of light emitting diodes 6 protrude toward the center. The substrate 4; A transparent epoxy resin layer (7) provided on the main body (2) by the width of the flexible substrate (4) to fill the light emitting diodes (6); A backlight module (8) provided on said transparent epoxy resin layer (7) for dissipating light from said light emitting diode (6) and said reflecting plate (5) to the outside with high brightness; And a display panel (13) provided on the backlight module (8) and displaying information in the form of letters and figures. 2. The light guide plate (9) according to claim 1, wherein the backlight module (8) is provided on the light guide plate (9) and functions on the light guide plate (9) to guide the light provided from the light emitting diode (6) to the outside. A diffusion film 10 for diffusing the light, and lower and upper prisms 11 and 12 for diffusing the light from the display panel 13 at right angles by refracting the light passing through the diffusion film 10. High brightness luminous signs characterized in that. The high brightness light sign of claim 1, wherein the light emitting diodes (7) are white light emitting diodes. 3. The high luminance light-emitting sign of claim 2, wherein the reflecting plate (5) has a shape in which the central portion protrudes toward the light guide plate (9) rather than the edge portion. 5. A high brightness light sign according to claim 1, characterized in that the flexible substrate (4) is arranged upright on the reflecting plate (5) at predetermined distances. 5. The high brightness luminous sign according to claim 1, wherein the information provided on the display panel is road information. The high brightness luminous sign according to claim 1, wherein the information provided on the display panel is shop information.

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