KR101558421B1 - LED channel signboard - Google Patents

Abstract

The present invention relates to an LED channel signboard. According to an aspect of the present invention, the LED channel signboard includes: a floor having the shape of a character; a side wall which is extended in an upward direction from the external side surface of the floor by a predetermined height; multiple LEDs which are mounted on a surface of flexible circuit substrate, which has the shape of a strip and is extended along the length direction of the internal side surfaces of the side wall to be attached thereon, in the length direction of the flexible circuit substrate; a translucent cover which covers the upper part of the side wall to scatter and transmit the light emitted from the LEDs to the outside; and a reflection plate which is arranged on the upper surface of the floor to reflect the light emitted from the LEDs to the translucent cover.

Description

LED channel signboard {LED channel signboard}

The present invention relates to an LED channel signboard. More particularly, the present invention relates to an LED channel signboard, and more particularly, to an LED channel signboard that directly reflects and / or reflects light emitted from an LED mounted on one side of a band- And is emitted to the outside through a floodlighting cover to be expressed in a surface emitting form.

It is a sign of external advertising that acts as a very important factor to represent the shop in various types of shops such as restaurants and agencies.

Conventional signboards are considered to be the best to decorate larger and more colorful for advertisement effect, and become indispensable and gorgeous, which is a factor of harming the beauty of the city.

Therefore, government and municipal governments are regulating the appearance standards such as the size of signboards, and are strongly encouraging signboards that do not harm the aesthetics and beauty.

To this end, so-called channel signboards have been developed and used, in which characters or shapes corresponding to each other are expressed in units of individual characters / figures.

As an example of the prior art related thereto, a conventional Korean Patent Registration No. 10-1211648 relates to a "image display apparatus for expressing a three-dimensional image", which comprises a first and a second half mirror which are spaced apart from each other in parallel to form a space, The light projected from the side surface is projected to the outside through the reflection process several times, and the image displayed in three dimensions is displayed from the outside. In the related art, light projected from a light emitting device used as a light source is transmitted to the front surface, and a small number of point light sources are displayed as a very large number of point light sources by a large number of reflections. When the point light source is used for light emission , There is an advantage that a stereoscopic feeling and a deep feeling can be added while using a thin thickness character while enhancing the concentration of the character.

However, when the above-mentioned conventional technique is used for a channel signboard made up of several characters such as mutual, it causes rather confusion, and it is difficult to recognize a plurality of characters at a glance, have.

As another example of the prior art, there is a "illuminated signboard using a light emitting diode" of Korean Patent No. 10-0742753. In the related art, light irradiated from the bottom to the top is irradiated onto the entire surface, So that the light is reflected and projected inside and is expressed in a surface light emission form on the front surface.

However, since the prior art requires an illuminant to be illuminated to form a thick layer in order to make the light emitting diode appear as a surface light emission, it is disadvantageous in view of work process and time, and the weight and cost increase.

In addition, although a conventional technique using a light guide plate for surface light emission has been proposed, if the thickness of the light guide plate is small, the problem of deformation of the light guide plate due to heat, impact, There arises a problem that a reduction in luminous efficiency and an increase in manufacturing cost are caused.

Meanwhile, although a method of injecting epoxy to fix the LED to the inside of the conventional channel signboard has been introduced, labor is required to be individually attached to the LED, and a considerable time is required for the epoxy injection process, There is a problem that it damages the appearance and damages the diffusibility of light, such as occurrence of bending or layering on the light emitting surface, and it is very difficult to repair the channel signboard when the circuit is short-circuited due to epoxy or a problem occurs in the LED There was a problem.

Korean Registered Patent No. 10-1211648 (registered on December 06, 2012) Korean Patent No. 10-0742753 (registered on July 19, 2007)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a flexible printed circuit board, And the light emitted from the light emitting diode is emitted to the outside through the light emitting cover.

According to an aspect of the present invention, there is provided a floor having a character shape. A sidewall extending from an outer surface of the floor to a predetermined height at an upper portion thereof; A plurality of LEDs mounted on the inner surface of the side wall in a longitudinal direction of the flexible circuit board on one surface of a band-shaped flexible circuit board extending along the longitudinal direction; A light-emitting cover covering the upper portion of the side wall and irradiating the light emitted from the LED in a scattered form to the outside; And a reflection plate provided on the top surface of the bottom and reflecting the light emitted from the LED to the light emitting cover.

Preferably, the side walls are formed by laminating at least two or more plate-like materials along the height direction.

Preferably, the side wall further includes a light blocking layer on the outer side.

Preferably, the reflection plate is formed to have a difference in relative height between a center of the reflection plate formed at the intermediate position between the both side walls and a peripheral portion of the reflection plate formed close to the both side walls.

Preferably, the reflection plate is characterized in that the reflection plate surface is subjected to bending treatment for diffuse reflection.

Preferably, at least one end of the reflection plate is formed to extend outwardly of the light emitting space defined by the bottom and the side wall.

Preferably, the light blocking layer is formed such that both side ends of the reflection plate extend upward.

Preferably, the channel signboard according to an embodiment of the present invention further comprises a light interception case insertable on the outer side of the side wall.

Preferably, at least one side of at least one of the side wall and the light-transmissive lid is provided with a light-emission control film for controlling the light transmission amount.

According to the present invention, a band-shaped flexible circuit board on which a plurality of LEDs are mounted is attached to the inner side surface of the LED channel signboard, so that the LED channel signboard can be easily manufactured, It does not look like a light source, and it has an advantage that the characters of the LED channel sign can be clearly recognized when viewed from the outside.

Particularly, according to the present invention, it is advantageous that the point light source can be seen as a surface light emission without being exposed to the outside, even if the opacity of the light projecting panel is not high.

In addition, the present invention is advantageous in that the LED can be irradiated only to a required portion, thereby making it possible to produce a variety of luminous effects.

In addition, the present invention has an advantage that it is easy to attach the LED to the channel signboard, and it is easy to repair and replace when a problem occurs.

In addition, the present invention is advantageous in that a high heat dissipation effect can be obtained without attaching a separate heat dissipating member to the LED channel sign, and a complicated heat dissipating structure is not required to be applied.

1 is a partially exploded perspective view of an LED channel signboard according to an embodiment of the present invention.
2 is a cross-sectional view of an LED channel signboard according to an embodiment of the present invention.
3A and 3B are cross-sectional schematic views of an LED channel signboard according to an embodiment of the present invention.
4 is a cross-sectional schematic diagram of an LED channel signboard according to another embodiment of the present invention.
5 is a cross-sectional schematic diagram of an LED channel signboard according to another embodiment of the present invention.
6 is a cross-sectional view of an LED channel signboard according to another embodiment of the present invention.
7 is a cross-sectional view of an LED channel signboard according to another embodiment of the present invention.
8 is an exploded perspective view of an LED channel signboard according to another embodiment of the present invention.
9 is a cross-sectional view of an LED channel signboard according to another embodiment of the present invention.
10 is a cross-sectional schematic diagram of an LED channel signboard according to another embodiment of the present invention.
11 is a cross-sectional schematic diagram of an LED channel signboard according to another embodiment of the present invention.
12 is a perspective view of an LED channel signboard according to another embodiment of the present invention.

The present invention may be embodied in many other forms without departing from its spirit or essential characteristics. Accordingly, the embodiments of the present invention are to be considered in all respects as merely illustrative and not restrictive.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises", "having", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, components, Steps, operations, elements, components, or combinations of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and a duplicate description thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the terminology used in the present invention, the term 'character' refers to a character / vowel of Hangul, an individual spelling of English, a number, a symbol, etc., and the unit constituent part of the logo is included in the scope of the present invention ' do.

In the following description, the drive control circuit, the power supply circuit, and the like for driving the LED can be used with a general circuit module, and a separate description will be omitted.

FIG. 1 is a partially exploded perspective view of an LED channel signboard according to an embodiment of the present invention, and is an embodiment of an LED channel signboard in the form of a letter 'g'. 2 is a cross-sectional view of an LED channel signboard according to an embodiment of the present invention.

The LED channel signboard of the present embodiment is configured such that the light emitted from the LED 31 mounted on the band-shaped flexible printed circuit board 30 attached to the inner side of the side wall 20 is reflected by the reflection plate 50, So that the shape of the character is displayed in the form of surface light emission.

1 and 2, the LED channel signboard of the present embodiment includes a floor 10, a side wall 20 extending upward from the outer side of the floor 10 to a predetermined height, And includes a plurality of LEDs 31, a reflection plate 50, and a floodlight cover 40 for irradiating light.

The bottom 10 is configured to have a character shape, so that the lower surface of the LED channel signboard of the present embodiment is shielded from the outside. For example, the floor 10 may be attached directly to the exterior wall of the building, or may be attached via an intermediate frame or intermediate panel.

The bottom 10 may be formed of various known materials used for channel signboards. For example, it can be made of a synthetic resin material such as PC (Poly Carbonate) or a metal material such as lightweight aluminum, and can be variously applied to waterproof and / or durable materials and heat resistant materials emitted from LEDs .

The side wall 20 corresponds to a support portion of the LED channel signboard of the present embodiment where an LED that emits light is attached.

3A and 3B are cross-sectional schematic views of an LED channel signboard according to an embodiment of the present invention. In the present invention, the 'cross-sectional view' means a cross-sectional view in which an optical path is expressed together.

3A, the side wall 20 may be formed of an opaque material to prevent light and / or reflected light from being transmitted through the opposite side wall 20 and being emitted to the outside, Alternatively, as another example, it is also possible to form the light-transmissive material through the side wall 20 as shown in FIG. 3B.

In other words, the side wall 20 may be formed of an opaque material that can not be transmitted light so that light is not projected to the side surface of the channel signboard, and may be formed of a material similar to or similar to the transparent cover 40 (Semitransparent material) so that light can be projected onto the upper surface of the channel signboard (that is, the upper surface of the light-emitting cover 40) as well as the side surface, It is possible.

The side wall 20 may be formed of an opaque material. In order to increase light efficiency by reflecting light when the light reaches the opposite side wall 20, (Not shown) may be further provided.

The side wall 20 can be made of various known materials used for the channel signboard. For example, synthetic resin materials such as PC, acrylic, and PVC can be used. Glass materials and metal materials can also be used as side walls.

The LED 31 is mounted along the longitudinal direction of the flexible circuit board 30 on one side of the band-shaped flexible circuit board 30 extending along the longitudinal direction on the inner surface of the side wall 20. The band-shaped flexible circuit board 30 may be an LED module composed of a known commercial product (for example, LINEARlight Flex LED module manufactured by Osram) or a band-shaped flexible circuit board manufactured in accordance with the present embodiment .

The flexible circuit board 30 is an electronic component formed by forming a conductor (for example, copper or the like) having a good electrical conductivity on an insulator. The flexible circuit board 30 can bend easily and can solve the rigidity of a conventional printed circuit board. The advantage is strong.

The LED 31 according to an embodiment of the present invention can be formed by being bent and being integrally formed by being mounted on the flexible circuit board 30 to express the curved surface of the LED channel signboard, And LED channel signboards are easily constructed and manufactured. The occurrence of corrosion problems due to rain, moisture, and the like can be minimized while repairing and replacing the LEDs 31 can be facilitated in the event of a problem.

For example, the flexible circuit board 30 is provided with a connecting device (not shown) for fitting the two or more flexible circuit boards 30 in an arm-button manner, And an LED light source of a desired length can be integrally manufactured without interruption. It is of course also possible to connect two or more flexible circuit boards 30 through a conventional solder connection.

Further, the flexible circuit board 30 can be easily attached to the inner surface of the side wall 20 by using a heat-resistant double-sided tape, for example, , It is possible to supply LEDs which are light in weight, can adhere well to materials such as synthetic resin, metal, and glass, and have excellent heat radiation effect.

For example, the flexible circuit board 30 may be configured such that two or more bands are attached to the inner side of the side wall 20 up and down when the size of the LED channel sign is large and the channel height is high .

The light-transmitting lid 40 covers the upper portion of the side wall 20, so that the light emitted from the LED 31 is radiated to the outside in a scattered form.

The light-transmitting lid 40 is preferably made of a material capable of transmitting light. For example, acrylic, PVC, PC, or the like can be used. The light-transmitting lid 40 may further include a light diffusing agent for allowing light to be diffused therein. For example, the light diffusing agent is a special crystal obtained by heat-treating a crystal of calcium carbonate (CP) and calcium phosphate (CP) as a main component, and has excellent light diffusibility and uniformly diffuses the entire surface. The light-diffusing agent may be mixed with the light-emitting cover 40, or may be formed on the surface of an acryl or the like by a method such as coating, or may be attached in a sheet form.

The light-transmitting lid 40 may be formed of a material such as PVC or PC when the thickness of the light-emitting lid 40 is thin, The light diffusing agent or the like may be added to at least one side so that the point light source is not expressed directly on the outside.

The reflector 50 is provided on the top surface of the bottom 10 and reflects the light emitted from the LED 31 to the transparent cover 40.

Although the reflective plate 50 of the present invention is expressed by the word 'plate', it is not limited to a plate form, and various shapes capable of reflecting light can be used, and a plate or layer such as a semi-use paint layer, And the like.

4 to 5 are cross-sectional schematic views of the LED channel signboard according to each embodiment of the reflection plate 50. FIG.

4, the reflection plate 50 includes a central portion of the reflection plate 50 formed at an intermediate position between the both side walls 20, a reflection plate 50 formed close to the both side walls 20, The relative height of the peripheral portion may be different.

For example, the reflector may have a center portion of the reflector higher than a peripheral portion of the reflector, and the light may be reflected more upwardly, and the same light effect may be obtained with a smaller light source. For example, the reflector may be formed in a shape of an isosceles triangle having a central portion at an angle of 5 to 20 degrees with respect to the upper surface of the bottom, and the angle may be appropriately changed in consideration of the width of the LED channel signboard , The center portion may be formed in a rounded shape.

According to another embodiment of the present invention, the reflector may have a lower central portion than the peripheral portion of the reflector. In this case, the reflector may have a sufficient space compared with the reflector.

In another embodiment, the reflector 50 may be bent so that the surface of the reflector 50 is irregularly reflected.

For example, when the concave and convex portions are formed on the surface of the reflection plate 50, the irregularity can increase the effect of diffusing the light emitted from the LED 31.

4, the central portion of the reflection plate 50 may be formed to be higher than the peripheral portion of the reflection plate 50, and the irregularities may be formed on the entire or a part of the reflection plate 50. [

In another embodiment, the reflection plate 50 may have at least one groove formed on the surface of the reflection plate 50 for diffusing reflection. As shown in FIG. 5, the light emitted from the LED 31 may be reflected by the groove formed in the reflection plate 50 to be seen as a light emitting surface. 5, the recess may be provided on the reflector 50 in a direction horizontal to the longitudinal direction of the flexible circuit board 30, and may extend in a direction perpendicular to the longitudinal direction of the flexible circuit board 30 It is also possible to provide, for example, a grid-like groove.

For example, the reflection plate 50 may be formed by bending a metal plate to form irregularities or recesses.

3A and 3B are schematic representations of a state in which light is transmitted through the side wall 20 and / or the floodlight 40. FIGS. 4 and 5 illustrate a state in which light is reflected through the reflector 50 Which is expressed in the internal space. 4 to 5, the light may also be transmitted through the side wall 20 and / or the light-emitting cover 40, and the light-emitting state through the side wall may be similarly applied to other embodiments.

6 is a cross-sectional view of an LED channel signboard according to another embodiment of the present invention.

At least one end of the reflection plate 50 may extend outside the light emitting space formed by the bottom 10 and the side wall 20.

For example, as shown in FIG. 6, the reflection plate 50 may be formed such that both end portions thereof are bent downward to partially or completely cover the outer surface of the bottom 10, Or may be formed so as to partially or entirely cover the outer side surface of the semiconductor device.

By increasing the area of the reflector 50 extending outwardly and being cooled by the air, it is possible to increase the heat radiating effect without providing a separate heat radiating member.

FIG. 7 is a cross-sectional view of an LED channel signboard according to another embodiment of the present invention, FIG. 8 is an exploded perspective view of an LED channel signboard according to another embodiment of the present invention, and FIG. Sectional view of the LED channel signboard according to the present invention.

The side walls 20 may be formed by laminating at least two or more plate-like materials along the height direction.

For example, the side wall 20 may be formed so that the LED channel signboard according to an embodiment of the present invention appears more clearly as a surface emitting light, while if it is to be formed tightly to secure an internal space for processing, So that they can be stacked and formed.

When the inner space is deepened, it is difficult to process the raw material into a desired shape by laser or NC or the like, or it takes a long processing time. However, the side wall 20 is formed by processing and laminating a thin plate- The side wall 20 having a desired thickness can be formed by a simple and simple process.

In this case, the side wall 20 may further include a light blocking layer 60 on its outer side.

When the side wall 20 is formed by laminating two or more layers of plate-like materials along the height direction as shown in the above-described embodiment and Figs. 7 to 8, the gap of each layer of the side wall 20 A light blocking layer 60 may be further formed on the outer surface of the light blocking layer 60 so as to prevent light from leaking from the light blocking layer 60. The light blocking layer 60 may be provided in a direction perpendicular to the layers of the side walls 20 , So that light does not leak.

For example, the light blocking layer 60 may be formed by bending a metal plate to form an LED channel signboard of the present embodiment, and then fitting the LED channel signboard to surround the outer side face of the LED channel signboard. Alternatively, It is also possible to attach it to the outer surface of the channel signboard. As another example, the light blocking layer 60 may be formed by applying a paint capable of blocking light or attaching a conventional aluminum foil tape or the like.

As shown in FIG. 9, the light blocking layer 60 may be formed by extending both side ends of the reflection plate 50 upward.

By forming both end portions of the reflection plate 50 so as to extend, it is possible to simultaneously obtain the effect of increasing the heat radiation effect while preventing light leakage.

10 is a cross-sectional schematic diagram of an LED channel signboard according to another embodiment of the present invention.

As shown in FIG. 10, the side wall 20 may further include a light blocking case 70 that can be inserted into the outer side of the side wall 20 by insertion.

The light shielding case 70 may be provided to prevent light leakage or to dissipate heat. The light blocking layer 70 is formed to prevent leakage of light through the side wall 20 and to open the bottom of the light blocking layer 70, And the bottom surface is closed so that the LED channel signboard of the present embodiment is inserted and fixed as a whole. When the same channel signboard is requested to be produced by the same advertiser, the light shielding case 70 is fabricated to fit the light shielding case 70 according to the place and period of installation, and the LED channel signboard is inserted, It is possible to appropriately cope with the problem.

FIG. 11 is a cross-sectional schematic view of an LED channel signboard according to another embodiment of the present invention, and FIG. 12 is a perspective view of an LED channel signboard according to another embodiment of the present invention.

A light-emission control film 80 may be provided on one side of at least one of the side wall 20 and the light-emitting lid 40 to adjust the light transmission amount.

The sidewall 20 or the light-emitting lid 40 is provided with the light-emission control film 80 in consideration of design and / or luminous efficiency, so that light is emitted only at a desired site.

For example, the light-directing control film 80 may be a paint or a sheet made of synthetic resin such as metal such as thin aluminum film, carbon, or polyurethane, and may be applied to a portion where light is not transmitted, Or the like.

The light control layer 80 may be formed of a material that absorbs light so that the light emitted from the LED does not penetrate through the light control layer 80, It can be used not only as the light is blocked to the position of the light-emission control film 80, but also as a reflection film for reflecting the light to other portions.

Although the present invention has been described with reference to the preferred embodiments thereof with reference to the accompanying drawings, it will be apparent to those skilled in the art that many other obvious modifications can be made therein without departing from the scope of the invention. Accordingly, the scope of the present invention should be interpreted by the appended claims to cover many such variations.

10: bottom 20: side wall
30: Flexible circuit board 31: LED
40: Floodlight cover 50: Reflector
60: light blocking layer 70: light blocking case
80:

Claims (9)

A floor having a character shape;
A sidewall extending from an outer surface of the floor to a predetermined height at an upper portion thereof;
A flexible printed circuit board extending along the longitudinal direction on the inner side surface of the side wall and being folded and integrally formed in the curved surface representation of the LED channel signboard, A plurality of LEDs;
A light-emitting cover covering the upper portion of the side wall and irradiating the light emitted from the LED in a scattered form to the outside; And
And a reflector provided on an upper surface of the bottom and reflecting the light emitted from the LED to the light emitting cover,
Wherein the side wall is formed of at least two layers of laminated synthetic resin materials made of any one of PC, acrylic, and PVC along the height direction,
Wherein the side wall has a light blocking layer on its outer side and the light blocking layer is formed such that both side ends of the reflection plate extend outwardly of the light emitting space formed by the bottom and the side wall and extend upwardly. .
delete delete The method according to claim 1,
Wherein the reflector plate is formed to have a difference in the relative height between the center of the reflector plate formed at the intermediate position between the both side walls and the periphery of the reflector plate formed close to the both side walls.
The method according to claim 1,
Wherein the reflector has a bent surface for diffusing the reflector surface.
delete delete The method according to claim 1,
Further comprising a light intercepting case which can be installed on an outer surface of the side wall in an insertion manner.
The method according to claim 1,
And a light emission control film for adjusting a light transmission amount is provided on one side of at least one of the side wall and the light-emitting lid.

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