KR200361074Y1 - Message transfer apparatus using floodlinghting - Google Patents

Abstract

According to the present invention, a message transmitting apparatus includes a plurality of light guide plates to form a message light emitting display panel, wherein each front surface of each of the light guide plates is engraved with each message, and a light source control circuit is mounted on each lower side of the light guide plates. After arranging the light sources on the printed circuit board, and fixing the printed circuit board and the light sources together with a bracket for supporting the light guide plates, the light source control circuit controls the light sources to blink to the front of the light guide plate of the message display panel. Engraved messages are three-dimensionally floodlit.

Description

MESSAGE TRANSFER APPARATUS USING FLOODLINGHTING}

The present invention relates to a message delivery device, and more particularly to a message delivery device using a light-transmitting method.

Nowadays it is very important to deliver a message to a person, and various methods and devices for message delivery have been developed and used. In particular, emotional or image message delivery adds to the appeal.

Therefore, there will be a lot of response if you implement a light-transmitting message delivery device using a light guide plate so that the emotional, already existing, message delivery appeal can be doubled.

Accordingly, an object of the present invention is to provide a message transmission device using a light guide plate.

Another object of the present invention is to provide a light-transmitting message transmission device using a light guide plate capable of displaying various colors and dynamic messages.

In accordance with the above object, the present invention, in the transmissive message delivery device, a plurality of light guide plates to form a message light emitting display panel, each of the light guide plate intaglio forming each message, each of the light guide plate On the lower side, the light sources on the printed circuit board on which the light source control circuit is mounted are arranged and then fixedly integrated into a bracket for supporting the light guide plates together with the printed circuit board and the light sources. The light source controller controls the light sources to blink. A message engraved in front of a light guide plate of the message light emitting panel may be three-dimensionally light-emitting display.

1 is a perspective view of a transmissive message transmission device according to an embodiment of the present invention,

2 and 3 is an example of the configuration of the message floodlight panel 4 according to an embodiment of the present invention,

4 is an example of implementation of a light-transmitting message transmission device according to an embodiment of the present invention

5 is a plan view of FIG. 4;

6A and 6B are cross-sectional configuration diagrams of a recessed groove in which the V groove and the bottom plane of the engraved message are scratched;

7A and 7B are views illustrating a light propagation state in a light guide plate having a V-groove and a recessed groove in which a bottom plane is scratched;

8 is a side cross-sectional view of a message delivery device equipped with an enclosure transparent case as another embodiment of the present invention;

9 is a block diagram of a light source control apparatus according to an embodiment of the present invention.

<< Explanation of symbols for main part of drawing >>

2a, 2b, 2c: LGP 4: message floodlight

6a, 6b, 6c: light source 8: printed circuit board

10: holder 12: bracket

40: V groove 42: Floor plane scratch indentation groove

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same elements in the figures are represented by the same numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a perspective view of a transmissive message transmission device according to an embodiment of the present invention, Figures 2 and 3 is an example of the configuration of a message transparent display panel 4 according to an embodiment of the present invention.

In addition, FIG. 4 is a diagram illustrating an implementation of the light transmission type message transmission device according to an embodiment of the present invention, and shows a state in which the message light transmission panel 4 is mounted on the main body 30. 5 is a plan view of FIG. 4.

According to an exemplary embodiment of the present disclosure, an apparatus for transmitting a light message includes stacking a plurality of light guide plates, for example, three light guide plates 2a, 2b, and 2c to configure one message light emitting display panel 4, wherein the light guide plates 2a, 2b, 2c) Each message is engraved on each front surface as in the example shown in FIGS. 2 and 3.

Specifically, for example, a non-smoking mark shape 20 is engraved on the left side of the front surface of the first LGP 2a among the LGPs 2a, 2b, and 2c of FIG. 2, and the second LGP 2b is formed. An 'non-smoking' character 22 is engraved horizontally on the upper part of the front surface, and an 'NO SMOKING' character 24 is formed engraved on the lower part of the front light guide plate 2c. The example of FIG. 3 is a case in which a message light emitting display panel is composed of two light guide plates, in which a 'GO' character shape is formed on one of two light guide plates, and a 'STOP' character shape is formed on another front surface.

The light guide plates 2a, 2b, and 2c serve to guide light emitted from a light source, and are mainly used for LCD backlights. As the light guide plate is also applied in the present invention, the transparent acrylic resin material is most used, and the mechanical strength is high, so that it is not broken or deformed, and is light and strong in chemical resistance, and has a high visible light transmittance. The refractive index of the light guide plate is approximately 1.49 to 1.62, and a refractive index of 1.49 is mainly used for the light guide plate.

The light guide plates 2a, 2b, and 2c according to an embodiment of the present invention are used for transmitting a light-transmitting message, and each thickness is composed of about 3 to 5 mm, which will be described in detail below. This causes the message to be engraved on the front of the light guide plate and projected to the front. The intaglio message representation consisting of the light guide plate thickness and the intaglio depth of the message enables three-dimensional representation of the message.

As shown in FIG. 1, the light sources 6a, 6b, and 6c are disposed on the printed circuit board 8 on which the light source control circuit is mounted on the lower side of each of the light guide plates 2a, 2b, and 2c. 2b, 2c) along the lower side of the side by side arranged to provide. In other words, the fastening means for fastening the bracket 12 supporting the light guide plates 2a, 2b, 2c to the printed circuit board 8 and the light sources 6a, 6b, 6c, and supporting the light guide plates 2a, 2b, 2c. Assemble and assemble together.

Cold Cathode Fluorescent Lamps (CCFLs) and High Brightness LEDs (Light Emitting Diodes) can be used as the light sources 6a, 6b, and 6c.In the case of Cold Cathode Fluorescent Lamps, they are linear light sources and point light sources for High Brightness LEDs. . Therefore, when the light source is implemented as a high-brightness LED that is a point light source, as shown in FIG. 5, the number of LEDs are arranged side by side along the lower surface of each light guide plate 2a, 2b, and 2c to have a printed circuit board 8. Mount on. When implementing a light source as a cold cathode fluorescent lamp (CCFL), which is a linear light source, an inverter, a driving device, must be used, and the holder 10 shown in FIG. Must be used). The reflecting plate surrounds the cold cathode fluorescent lamp to collect the scattered light to the light guide plate entrance surface to maximize the lamp efficiency. When the light source is a high brightness LED, since the light of the high brightness LED has straightness, it is not necessary to use the holder 10 as a reflecting plate, and the employment of the holder 10 is also optional. Therefore, high-brightness LEDs are more preferable as the light sources 6a, 6b, 6c.

When expressing the message as shown in FIG. 3 in multicolor, the high brightness LEDs 6a of the first LGP 2a are made red, the high brightness LEDs 6b of the second LGP 2b are made blue, The high brightness LEDs 6c of the third light guide plate 2c may be implemented in white. Accordingly, when each of the high brightness LEDs 6a, 6b, and 6c emits light, a non-smoking mark shape 20 is formed on the front surface of the first light guide plate 2a. Red light is visible through the intaglio of the second light guide plate (2b) and the visible 'non-smoking' character of the front of the second light guide plate (2c) blue light is visible through the inscription, 'NO SMOKING' character on the front of the third light guide plate (2c) White light is projected through the intaglio of the shape 24 to be visible.

On the back of the printed circuit board 8 provided with the light sources 6a, 6b, and 6c, a light source control circuit (70 in FIG. 9) in the block configuration of FIG. 9 is mounted, and the light sources 6a, 6b and 6c. Blinking control to cause the message lightly formed on the front surface of the predetermined light guide plate of the message light emitting display panel 4 to be three-dimensional display.

According to an embodiment of the present invention, the light sources 6a, 6b, and 6c of the corresponding light sources 6a, 6b, and 6c may be implemented in a single color or a mixed color, respectively, in the light guide plates 2a, 2b, and 2c. When the light source control circuit (70 of FIG. 9) selectively selects each light source sequentially, crosses, and uniform flashes, the message engraved on each light guide plate is transmitted in various colors, three-dimensionally and dynamically. .

4 is a diagram illustrating an implementation of a light transmitting type message transmitting device according to an embodiment of the present invention, and includes a main body 30 that supports and mounts a lower portion of the message light emitting display panel 4 configured as shown in FIG. 1. The main body 30 is supported by the pedestal 32 on both sides, and one side of the main body 30 supplies power to the light source control circuit (70 in FIG. 9) mounted on the printed circuit board 8 of FIG. Power line 34 is connected.

9 is a block diagram of a light source control apparatus according to an embodiment of the present invention, the power supply unit 60 for supplying power through the power supply line 34 of FIG. 4 and the light source control mounted on the printed circuit board 8. The circuit 70 is included. The light source control circuit 70 controls the flashing driving of the light sources 6a, 6b, and 6c with the power of the power supply unit 60, and the light sources 6a and 6b under the control of the light source driving control unit 62. And a light source driver 64 for driving 6c.

When the light-transmitting message transmission device according to an embodiment of the present invention is used for a vehicle or the like, the light quantity detecting unit 66 is further provided in the configuration of FIG. 9 to be driven when it is dark, such as at night. The light quantity detector 66 may be configured of a photoconductive element such as a CdS cell. The light quantity detection unit 66 detects the amount of ambient light and outputs it to the light source driving control unit 62, and the light source driving control unit 62 is only when the amount of ambient light detected by the light amount detecting unit 66 is less than the preset light amount. Flashing driving of the light sources 6a, 6b, 6c is controlled.

In an embodiment of the present invention, a message engraved in the light guide plates 2a, 2b, and 2c is formed into a V-groove or a recessed groove in which the bottom plane is scratched so as to be transmitted.

6A is a cross-sectional configuration diagram of the V groove 40 of the engraved message, and FIG. 6B is a cross-sectional configuration diagram of the bottom plane scratched recess 42 of the engraved message.

In FIG. 6A, the V groove 40 is grooved at 40 ° ± 10 °, and the front surface of the V groove 40 is carved at a depth corresponding to about 1/4 of the thickness of the light guide plates 2a, 2b, and 2c (3 to 5 mm). The inventors have confirmed through experiments that the most preferable value for light transmission. An example formed of the V groove 40 of FIG. 6A is the 'non-smoking' character 22 or the 'NO SMOKING' character 24 of FIG. 2.

In FIG. 6B, the bottom groove-indented groove 42 is etched to a depth corresponding to about 1/4 of the thickness of the light guide plates 2a, 2b, and 2c (3 to 5 mm), which is the most preferable value for front light projection. The experimenter confirmed through the experiment. An example of the bottom surface scratched recessed groove 42 of FIG. 6B is the smoking cessation mark shape 20 shown in FIG. 2. Engraving a message with a light guide plate 3 to 5 mm thick to a quarter depth of thickness also makes the message stereoscopic.

7A and 7B illustrate a light propagation state in a light guide plate having a V groove 40 and a recess groove 42 in which the bottom plane is scratched.

Referring to FIG. 7A, when the light incident on the light guide plate is totally reflected to the diagonal line of the V groove 40 carved in front of the light guide plate, the incident angle theta_1 incident on the scratched diagonal line is smaller than the critical angle for the total reflection so that the total reflection is performed. Refraction occurs and is refracted at an angle of refraction theta_2 greater than the angle of incidence theta_1 and is projected to the front of the light guide plate (Snell's law n1theta_1 = n2theta_2, where n1 is the refractive index of the light guide plate and n2 is the refractive index of air).

Similarly, referring to FIG. 7B, when light incident and totally reflected in the light guide plate proceeds to the scratch surface of the bottom surface scratch recess groove 42 carved in front of the light guide plate, the incident angle theta_1 is smaller than the critical angle for total reflection, thereby not being total reflection. Refraction occurs and is refracted at the angle of incidence theta_2 greater than the angle of incidence theta_1 and transmitted to the front of the light guide plate (Snell's law n1theta_1 = n2theta_2, where n1 is the refractive index of the light guide plate and n2 is the refractive index of air).

As described above, in the embodiment of the present invention, the engraving on the front of the light guide plate allows the message to be transmitted more clearly.

8 is a side cross-sectional view of a message delivery device equipped with an enclosure transparent case 50 as another embodiment of the present invention. The enclosure transparent case 50 of FIG. 8 is preferably used in a dark acrylic type for the purpose of blocking external ultraviolet rays for outdoor use. The enclosure transparent case 50 is inserted on the main body 30 on which the message transmissive display panel 4 is mounted, and receives the message transmissive display panel 4 to block external ultraviolet rays.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be determined by the described embodiments, but should be determined by the equivalent of utility model registration claims and utility model registration claims.

As described above, the present invention constitutes a light emitting display panel by overlapping a plurality of light guide plates, and each message is engraved on the front surface of each of the light guide plates so that the light is transmitted to the front surface of the light guide plate with various color light sources. Enable message presentation.

Claims (7)

In the projection type message transmission device, A plurality of light guide plates are stacked to form a message light emitting display panel, and each message is engraved on a front surface of each of the light guide plates, and light sources on a printed circuit board on which a light source control circuit is mounted are arranged on a lower side of each of the light guide plates. The printed circuit board and the light sources are fixed together with a bracket for supporting the light guide plates. The light source control circuit controls the light sources to flash to control the light sources. Floodlight message transmission device characterized in that. The apparatus of claim 1, wherein each of the light guide plates has a thickness of about 3 to 5 mm. The apparatus of claim 2, wherein the intaglio forming message of each of the light guide plates is formed by engraving a recess in which the V groove and the bottom plane are scratched. 4. The apparatus of claim 3, wherein the V-groove is grooved at 40 ° ± 10 ° and carved into a depth corresponding to about one quarter of the thickness of the light guide plate. The device of claim 3, wherein the recessed groove in which the bottom plane is scratched is carved to a depth corresponding to about 1/4 of the thickness of the light guide plate. The apparatus of claim 1, further comprising: a main body supporting a lower portion of the message light emitting display panel. The apparatus of claim 1, further comprising a light amount detecting unit configured to detect an amount of ambient light and output the light amount to the light source control circuit unit.