KR100694867B1 - The luminous signboard to use reflected of led - Google Patents

Abstract

A luminescent sign using LED's reflected light is disclosed. The present invention is characterized by the use of the LED as a light emitting means in the light emitting sign, in particular the method of installing the LED. The present invention combines the LED in parallel with the power supply line to form an LED light emitting unit, the LED light emitting unit is simply installed in the interior of the sign and at the same time the LED element provides light toward the inner wall of the object for the purpose of light emission, By emitting a sign by light reflected from the wall, the amount of LED is reduced, and the LED's focus is prevented from appearing at the light emitting surface.

In addition, the sign using the LED according to the present invention can reduce the thickness of the sign due to the installation of the LED and do not use a separate circuit board for supplying power, thereby reducing the production cost and production time It has an effect. As a result, the present invention can produce a sign that generates the desired brightness while reducing the amount of expensive LEDs as much as possible, and thus can expand the spread of the sign using the LED in the sign and save energy by supplying a sign using the LED. It works.

Flexx Sign, Channel Sign, LED, Reflected Light, Bus License Plate, Epoxy Resin

Description

Light emitting sign using LED's reflected light {THE LUMINOUS SIGNBOARD TO USE REFLECTED OF LED}

1 is a view showing a light emitting sign using a conventional fluorescent lamp as a light emitting means.

2 shows an example of a channel-shaped sign.

3 is a view showing an example of a sign using neon.

Figure 4 is a view showing a light emitting frame of the light emitting sign using the reflected light of the present invention LED.

5 is a view showing the LED light emitting unit according to the light emitting sign using the reflected light of the present invention LED.

6 is a view showing the ease of installation of the LED light emitting unit according to the light emitting sign using the reflected light of the present invention LED.

Figure 7 is a view showing the installation of the LED light emitting unit according to the light emitting sign using the reflected light of the present invention LED.

8 is a view for explaining in detail the installation state of the LED light emitting unit according to the present invention.

9 is a view conceptually showing a flexx signboard according to the present invention;

10 is a view showing a light leakage preventing frame according to the present invention.

11 is a view showing that the light leakage preventing frame is attached to the light emitting frame according to the present invention.

Figure 12 is a view showing a cross section of the signboard using a light leakage prevention frame in a flexx sign according to the invention.

13 is a view conceptually showing the configuration of a channel-shaped signboard according to the present invention;

14 is a view showing an example of installation of a channel-shaped signboard according to the present invention.

15 is a view showing an application example of the bus license plate of the sign according to the present invention.

16 is a view showing a light emission control unit for controlling the LED light emitting unit according to the present invention.

*** Brief description of the reference numerals for the main parts of the drawings ***

1: sign 2: fluorescent lamp

3: panel sign 4: neon sign

10 light emitting frame 11 wall

12: bottom surface 13: white silk paint

15: light leakage preventing frame 20: LED light emitting unit

21: LED 22: power supply line

23: light emission controller 30: constant voltage supply

40: flexible board 42: light emitting surface

50: panel plate 60: epoxy resin layer

70: sulfide prevention layer 200: light emitting bus license plate

The present invention relates to a light emitting sign using LED (Light-Emitting-Diode), which is a light emitting device. In particular, a plurality of signs are formed in a frame having a shape corresponding to a character or a figure which is a part for emitting light in a sign. An LED is provided and relates to a light emitting sign using the reflected light of the LED.

A signboard is usually called a signboard, and is a cover letter written in a name, product name, or business item in order to attract the attention of various people in a store, company, or institution. In addition to the signboards that are written in front of the store, the signboards, protruded signs, rooftop signs, in-vehicle ads, signboards, advertising towers, neon signs, and telephone poles are now very diverse.

Such signs can be classified into a letter sign called a flex sign and a channel sign if they are largely classified based on their shape.

The flexx signage is a signboard that maximizes the advertising effect with various graphics and pictures by including a light emitting device inside the frame formed in a retractable form in the most general form commonly seen in the surroundings and having a high light transmittance. Signboard is a signboard that attaches three-dimensional letters, patterns, etc. to the wall individually.

FIG. 1 is a view showing a light emitting sign that is a front sign and is a flex sign. Generally, the signboard of the type shown in FIG. 1 includes a light emitting device that emits light by electric energy inside the sign 1 in order to make the sign 1 stand out at night. The light emitting device to be used mostly uses the fluorescent lamp 2 as shown.

The fluorescent lamp 2 is installed in the interior of the sign (1) a number of other accessories such as a ballast for driving the fluorescent lamp 2 is also installed. Therefore, as the size of the sign 1 increases, the number of fluorescent lamps 2 used greatly increases, thereby increasing the power consumption, and the hassle and frequent cost of replacing the fluorescent lamps 2 which have reached the end of their life. There is a problem that occurs and a lot of waste fluorescent lamps containing environmental pollutants.

2 is a view showing a channel plate. As can be seen from the channel shaped signboard 3 of 'M light' conceptually shown in FIG. 2, the channel shaped signboard 3 has characters or figures in three-dimensional shapes, and in the installation of the wall surface, each three-dimensional shape is adhesive. Or by coupling means, or fix the coupling frame to the wall to be installed, and combines each of the three-dimensional shape to the coupling frame coupled to the wall.

The channel board 3 as described above has many advantages, such as having a luxurious image without damaging the aesthetics of the building, but because it does not self-illuminate at night, in general, at night, the lighting is directly illuminated or at the back of the channel board. Indirectly, the channel board is visible to the naked eye. Therefore, there is a problem that the ability to discriminate at night, and there is a problem that the appearance of the building worsens due to the installation of lighting devices.

Figure 3 shows a signboard using neon as a protruding sign. The neon sign 4 conceptually shown in FIG. 3 turns on the neon tube with a neon transformer to produce a change in character or color with a flasher or dimmer. The neon tube is filled with neon gas by installing cylindrical electrodes at both ends of the elongated glass tube. When the high-pressure exchange of thousands to tens of thousands of volts is applied to the neon tube, the inner gas sequentially ionizes and emits light.

Such neon signs 4 vary in color depending on the gas enclosed in the neon tube, mercury gas is cyan, argon is purple, helium is rose, nitrogen is yellow, oxygen is orange, or two or more gases are mixed or Various colors can be obtained by coloring glass tubes.

Such neon sign 4 has a significant effect as a dynamic advertising means at night, but a large amount of power consumption wastes a lot of electrical energy, there is a problem that emits environmental pollutants at the time of disposal because it contains environmentally harmful gas.

In addition, the weight of the neon transformer is considerable, there is a problem falling from the place where the neon signboard is installed, and there are frequent problems caused by this.

In order to overcome the problems of the conventional signage as described above, there are many designs and inventions using LEDs, which are new light emitting devices.

However, due to the structural characteristics of the LED, it is difficult and time consuming to produce a sign using the LED. In particular, when a large amount of LED is installed, the manufacturing price of the person is higher than that of the conventional sign.

In addition, although the luminance is very high at the center of the LED, that is, the light emitting point of the LED, the luminance sharply decreases toward the periphery, which causes a problem of focusing on the light emitting surface when the LED is used as the light emitting means.

The present invention was devised to overcome the above-described problems, and at the same time, it is possible to install LEDs without using circuit boards required for the installation and power supply of LEDs, and at the same time, it is easy to manufacture sign products. The purpose of the present invention is to provide a light emitting sign that reduces the cost and reduces the thickness of the sign by using the circuit board and eliminates the phenomenon of focusing on the light emitting surface of the sign.

In order to achieve the technical problem to be achieved by the above invention, the present invention has the following configuration and features.

In the flexx signboard consisting of a light emitting surface and a signboard, fixedly installed in the interior space of the flexx signboard, forming a space therein in a predetermined three-dimensional shape, the front surface is open, the inner side of the wall and bottom surface of the white silk A light emitting frame coated with paint; An LED light emitting unit configured on a plurality of LEDs adjacent to an inner side of a wall of the light emitting frame and lying down so that the front of the LED faces the inner wall; And a constant voltage supply unit configured to receive an external AC power and convert it into a DC power supply to supply the DC power to the LED light emitting unit. That is, the present invention is installed in the light emitting frame inside the flexx signage to emit a signboard at night.

In addition, in order to increase the luminance, the light emitting frame is brought into close contact with the open front surface of the light emitting frame and the inner surface of the light emitting surface so that the boundary line between the light emitting portion and the non-light emitting portion of the light emitting surface due to leakage of light from the light emitting frame leaks. To prevent the visible phenomenon, the two faces are formed in a 'b' shape vertically, one side is attached to the outer side of the wall so that the wings are formed on the open front of the light emitting frame, the other side is light leakage attached to the inner side of the light emitting surface Prevention frame; characterized in that it further comprises. That is, the light emitting frame for providing light and the light emitting surface through which the light passes are well adhered to make the boundary between the light emitting surface and the non-light emitting surface clear so that the letter or shape desired for light emission is clarified.

In addition, the LED light emitting unit is characterized in that a plurality of LEDs are coupled in parallel to the power supply line consisting of (+) power line and (-) power line side by side at a predetermined interval. Therefore, the time and cost for installing the LED in the light emitting frame can be reduced.

At this time, the LED light emitting unit is an interval between the LEDs coupled in parallel is 10mm or more and 30mm or less; it provides an optimal brightness.

The LED light emitting unit may include a light emission control circuit configured to control an LED blinking part of the LED light emitting part by receiving a power supply from the constant voltage supply part. In addition to light emission, a flexible board may be provided that emits light in various patterns.

In addition, the present invention provides a channel-shaped signboard, which forms a space therein in a predetermined three-dimensional shape, the front surface is open, the inner surface of the wall surface and the bottom surface is a panel-shaped signboard coated with white silk paint; An LED light emitting unit configured on a plurality of LEDs adjacent to an inner side of a wall of the panel-shaped board and installed so that the front of the LED faces the inner wall; An epoxy resin layer filled in the inside of the panel-shaped board having the LED light emitting part and including a fluorescent dye for emitting a predetermined color; And a constant voltage supply unit configured to receive an external AC power and convert it into a DC power supply to supply DC power to the LED light emitting unit. In other words, the panel-shaped signboard according to the present invention emits the signboard itself, not the external indirect lighting.

 In addition, the epoxy resin layer to have a specific color to provide a channel-shaped signboard having a specific color during the day.

In addition, the LED light emitting unit is characterized in that a plurality of LEDs are coupled in parallel to the power supply line consisting of (+) power line and (-) power line side by side at a predetermined interval. Therefore, it is possible to reduce the time and cost of installing the LED in the panel frame.

At this time, the LED light emitting unit is characterized in that the spacing between the LED coupled in parallel is 10mm or more and 30mm or less; it provides an optimal brightness in the channel-shaped signboard.

In addition, the epoxy resin layer containing the fluorescent pigment further comprises a sulfidation prevention layer made of acrylic resin to the outside of the panel-shaped signboard frame; characterized in that the sulfide phenomenon caused by the contact with the epoxy resin layer and the atmosphere; Prevent it at the source.

The LED light emitting unit may further include a light emitting control circuit configured to control the blinking of the LEDs constituting the LED light emitting unit. The LED light emitting unit may receive a power supply from the constant voltage supply unit to control the blinking of the LEDs of the light emitting unit. It is possible to provide a channel-shaped signboard that emits light in various patterns as well as simple light emission.

Hereinafter, a light emitting sign using reflected light of the present invention will be described in detail with reference to the accompanying drawings.

4 is a view showing a light emitting frame of a light emitting sign using the reflected light of the present invention LED. The illustrated figure conceptually shows a light emitting frame 10 installed in the flex sign indicating the English letter 'M'. As shown in FIG. 4 (a), the front surface is opened and sealed to form a space therein. Is produced. That is, it has a three-dimensional shape of letters or figures for which light emission is desired, and the light emission shape is the same as the shape of the open surface of the light emitting frame. 4 emits light in the shape of the letter 'M'.

As shown in FIG. 4 (b), the inside of the light emitting frame 10 is coated with a white silk paint for reflecting light emitted from the LED to the wall 11 and the entire bottom surface 12. That is, the entire inner surface of the light emitting frame 10 is coated with a white silk paint reflects the light from the LED.

5 is a view showing an LED light emitting unit according to a light emitting sign using the reflected light of the present invention LED. As shown in FIG. 5, the LED light emitting unit according to the present invention includes a power supply line 22 and a power supply line 22 formed with parallel (+) power lines and (−) power lines at predetermined intervals at predetermined intervals. Is made by combining. That is, the LED light emitting unit 20 according to the present invention is driven by a DC power source, each LED 21 is connected in parallel.

In this case, the interval between the LEDs 21 is higher as the use of the LEDs 21 increases, so that the brightness of the light emitting surface becomes bright. However, since the gap does not appear in the intervals of 10 mm or more and 30 mm or less, it is preferable to be connected to the intervals. Do.

That is, when the interval between the LEDs 21 is less than 10mm, the usage of the LEDs 21 is excessive, and when the intervals between the LEDs 21 are more than 30mm, there is a problem that the luminance of the light emitting surface is sharply dropped.

The LED light emitting unit 20 as described above has a high ease of installation as shown in FIG. The utilization of the LED light emitting unit 20 according to the present invention will be described in detail with reference to FIG.

6 is a view showing the ease of installation of the LED light emitting unit according to the light emitting sign using the reflected light of the present invention LED. As shown in (a), (b), and (c) of FIG. 6, even when the light emitting frame 10 is a triangle, a quadrangle, or a decagon, the LED light emitting unit 20 can be easily installed as shown. There is a number. This is possible because it does not use the circuit board for installing the LED in the present invention can be installed in any light emitting frame 10 that can be produced any character, figure, and the like.

7 is a view showing the installation of the LED light emitting unit according to the light emitting sign using the reflected light of the present invention LED. As shown in FIG. 7, the LED light emitting unit 20 installed in the light emitting frame 10 is driven by an external AC power source 110V to 220V, and at this time, the power supply line of the LED light emitting unit 20 uses DC power. It is coupled to the output terminal of the constant voltage supply unit 30 that converts to a power source and supplies a voltage from 5V to 48V.

That is, the LEDs constituting the LED light emitting unit 20 are driven by a DC power source.

8 is a view for explaining in detail the installation state of the LED light emitting unit according to the present invention. 8 is for explaining the installation form of the LED in detail is the most characteristic technical matters in the present invention.

That is, the installation of the LED light emitting part 20 is installed on the surface coated with the white silk paint 13 on the wall 11 and the bottom 12, wherein the LED 21 is adjacent to the wall 11 and the front It is installed to face the wall (11).

That is, the light emitted from the LED 21 is reflected by the white silk paint 13 applied to the wall surface 11 and the bottom surface 12.

9 is a view conceptually showing a flexx signboard according to the present invention. 9 shows the flexure sign according to the present invention, and the light emitting frame 10 described with reference to FIGS. 4 to 8 inside as a light emitting means in a signboard consisting of a signboard frame 40 and a light emitting surface 42. Is installed.

In more detail, when the letter 'M' emits light as shown, the LED light emitting part is installed in the light emitting frame 10 having the same letter 'M' shape, and the LED light emitting part is provided to the constant voltage supply part 30 receiving the AC power. Connect. As a result, the light emitting frame 10 may emit light by LEDs. In other words, it is possible to perform the light emitting means of the flexx signage.

Here, the light emitting surface 42 made of synthetic resin having high transmittance is combined as shown. In this case, the light emitting surface 42 may allow the light emitting area to have a shape and a specific color of the letter 'M' to indicate the letter 'M' during the day and to emit the letter 'M' at night.

10 is a view showing a light leakage preventing frame according to the present invention. The light leakage preventing frame 15 shown in FIG. 10 is to increase the clarity of the signboard by preventing light from leaking out. As shown in the figure 'b', one surface is attached to the light emitting frame and the light is emitted. A face 152 is attached to the face 42 and both faces are formed vertically. Hereinafter, an installation example of the light leakage preventing frame 15 will be described in detail with reference to FIG. 11.

11 is a view showing that the light leakage preventing frame is attached to the light emitting frame according to the present invention. As shown in FIG. 11, the light leakage preventing frame 15 is attached to the light emitting frame 10 representing the letter 'M', and is attached to the outside of the wall horizontally with the open front surface. Therefore, the open surface of the light emitting frame 10 and the surface 152 attached to the light emitting surface 42 of the light leakage preventing frame 15 are located on the same plane.

That is, the light leakage preventing frame 15 forms a wing in the light emitting frame 10 to increase adhesion to the light emitting surface 42.

12 is a cross-sectional view of a signboard using a light leakage preventing frame in the flexx signage according to the present invention. As shown in FIG. 12, the other side surface 152 of the light leakage preventing frame 15 having one side attached to the light emitting frame 10 installed inside the flexure signage frame 40 is the inside of the light emitting surface 42. Is attached. Therefore, the light emitting surface 42 and the light emitting frame 10 are in close contact with the light leakage preventing frame 15 to prevent the light provided from the LED from leaking out. The border becomes clear, which in turn increases the sharpness of the Flexx sign.

13 is a view conceptually showing the configuration of a channel-shaped signboard according to the present invention. According to the present invention, in a panel-shaped signboard, a space is formed in a predetermined three-dimensional shape and the front surface is open, and the inner surface of the wall and bottom surface is coated with a white silk paint. The LED light emitting part 20 formed in a plurality of LEDs adjacent to the inside of the wall surface of the frame 50 and laid down so that the front of the LED faces the inner wall surface is filled in the interior of the signboard in which the LED light emitting part is installed and has a predetermined color. Epoxy resin layer 60 containing a fluorescent dye for emitting light and a constant voltage supply unit for receiving the external AC power is converted into a direct current power supply to supply a direct current power to the LED light emitting unit.

Here, the epoxy resin layer containing the fluorescent dye may further include a sulfidation prevention layer 70 made of an acrylic resin to the outside of the light emitting frame.

13 illustrates an embodiment of a panel shaped signboard having a rectangular shape. The LED light emitting unit 20 is formed in the panel shaped signboard 50 having a rectangular light emitting surface as illustrated in FIG. 13. It is installed as described in Figures 5 to 8.

Subsequently, the epoxy resin layer 60 is filled with the epoxy resin containing fluorescent dye in the panel-shaped interplate frame 50 in which the LED light emitting part 20 is installed.

In this case, the epoxy resin layer 60 including the fluorescent dye includes a fluorescent dye emitting a predetermined color and has a specific color when emitting light. Therefore, the epoxy resin layer 60 in the channel board provides a channel board having a specific color during the day and at the same time provides a channel board that emits light in a specific color at night.

However, the epoxy resin layer 60 has a very small reaction shrinkage in curing, does not generate volatiles, excellent electrical and mechanical properties, high water intake stability, excellent water resistance, chemical resistance, abrasion resistance, and is used for adhesion between different materials. Although there is an advantage that can be caused by the chemical reaction with the air there is a problem causing the yellowing (Yellowing) that the surface color of the epoxy resin layer 60 changes to yellow.

Therefore, finish by adding a sulfidation prevention layer 70 as a finish. That is, the channel board according to the present invention is preferably manufactured as described above, and the constant voltage supply unit is coupled to emit light.

In the present invention, the channel shaped frame 50 is the same as the light emitting frame 10 described in FIG.

14 is a view showing an installation example of the channel plate according to the present invention. FIG. 14 illustrates a channel-shaped signboard according to the present invention. When all letters are 'M light', each letter may be individually emitted, and color may be selectively emitted. The light emitting color of the LED, which is a light emitting means, may be used, but it is preferable to use an epoxy resin including fluorescent dye as described with reference to FIG. 13.

That is, each of the characters constituting the channel-shaped signboard can have a unique color, so it functions as a channel-shaped signboard having a specific color during the day, and at the same time, it functions as a channel-shaped signboard emitting light in the specific color at night.

15 is a view showing an application example of the bus license plate of the sign according to the present invention. 15 illustrates an example of applying the present invention to a bus license plate. In the case of the current bus license plate, it is difficult to identify the number of the bus at night, and thus there is a problem that is hardly recognizable especially in rainy weather.

Therefore, when the present invention is applied to the bus number plate, the number of the bus may emit light as shown in the drawing, thereby increasing the discriminating power of the bus. In addition, when applied to a bus license plate, large vehicles use DC 24V as a power source, so the LED light emitting unit is directly driven by the vehicle power supply, so it can be used without a constant voltage supply unit.

16 is a view showing a light emission control unit for controlling the LED light emitting unit according to the present invention. 16 is a light emission control circuit for controlling the flashing of the LED constituting the LED light emitting unit 20 is a light emitting control unit 23 for controlling the LED flashing of the LED light emitting unit receives a power supply from the constant voltage supply unit 30 It is shown to include more.

That is, as shown in FIG. 16, the LED light emitting unit 20 receives the on / off signal, that is, power from the light emission control unit 23, and blinks in time, thereby enabling light emission in various patterns.

As a result, the light emission control unit 23 is composed of a light emission control circuit for turning on / off the power to flash the time difference by continuously turning on / off the LED light emitting unit 20. At this time, the light emission control circuit of the light emission control unit 23 is not limited to any specific circuit but corresponds to a general light emission control circuit.

Although the present invention described above has been described in detail only with respect to specific examples described in the present specification, it is apparent to those skilled in the art that various modifications and changes are possible within the technical scope of the present invention, and such modifications and modifications are defined in the appended claims. Belonging is natural.

As described above, the light emitting sign using the reflected light of the LED of the present invention has a macro effect of reducing the consumption of electrical energy by using the LED as a light emitting means, saving energy, reducing maintenance costs and suppressing the emission of environmental pollutants. In addition, the LED is installed on the side to eliminate the focus of the LED from the light emitting surface of the sign by using the reflected light and the side light, and the sign using the LED by drastically reducing the use of the LED in the production of the sign. Significantly reduce the manufacturing cost of the product, and because it does not use a circuit board for installing the LED, it is possible to manufacture a sign with a relatively thin thickness, and to increase the ease of installation of the LED and greatly reduce the working time. have.

Claims (10)

In the flex signboard consisting of a light emitting surface and a signboard, A light emitting frame fixedly installed in the interior space of the flexx signage, forming a space therein in a predetermined three-dimensional shape, the front surface of which is open, and the inside of the wall and the bottom being coated with white silk paint; A plurality of LEDs are connected in parallel at predetermined intervals to a power supply line consisting of a (+) power line and a (-) power line arranged side by side along the inner wall of the light emitting frame, and the bulb portion of the LED is the inner wall surface of the light emitting frame. An LED light emitting unit disposed to be laid on the bottom surface of the light emitting frame so as to face the light emitting unit; And Light receiving sign using the reflected light of the LED, characterized in that it comprises a; a constant voltage supply unit for receiving the external AC power is converted to a DC power supply to supply the DC power to the LED light emitting unit. The method of claim 1, wherein the light emitting frame The 'b' shape is formed vertically with the two surfaces for vertically contacting the open front surface of the light emitting frame and the inner surface of the light emitting surface, and one surface is attached to the outside of the wall of the light emitting frame so that side wings are formed on the front surface of the light emitting frame. The other surface is a light emitting sign using the reflected light of the LED, characterized in that it further comprises; a light leakage prevention frame attached to the inner surface of the light emitting surface. delete The method of claim 3, wherein the LED light emitting unit Light emitting sign using the reflected light of the LED, characterized in that the spacing between the LEDs coupled in parallel is 10mm or more and 30mm or less. The method of claim 1, wherein the LED light emitting unit A light emitting sign using the reflected light of the LED further comprises a; LED light-emitting control circuit comprising a light emitting control circuit for controlling the flashing of the LED constituting the light emitting unit to control the blinking of the LED by receiving power from the constant voltage supply. In the channel board, A channel-shaped interpanel forming a space therein in a predetermined three-dimensional shape, the front surface of which is open, and the inside of the wall and the bottom being coated with white silk paint; A plurality of LEDs are connected in parallel at predetermined intervals to a power supply line consisting of a (+) power line and a (-) power line arranged side by side along the inner wall of the light emitting frame, and the bulb portion of the LED is the inner wall surface of the light emitting frame. An LED light emitting unit disposed to be laid on the bottom surface of the light emitting frame so as to face the light emitting unit; And An epoxy resin layer filled in the signboard in which the LED light emitting unit is installed and including a fluorescent dye for emitting a predetermined color; And Light-emitting sign using the reflected light of the LED, characterized in that consisting of; constant voltage supply unit for supplying the DC power to the LED light emitting unit by receiving an external AC power input to convert to DC power. delete The method of claim 7, wherein the LED light emitting unit Light emitting sign using the reflected light of the LED, characterized in that the spacing between the LED coupled in parallel is 10mm or more and 30mm or less. According to claim 6, wherein the epoxy resin layer containing the fluorescent dye is Light-emitting sign using the reflected light of the LED further comprises a; sulfide prevention layer made of acrylic resin in the outer direction of the channel-shaped signboard. The method of claim 6, wherein the LED light emitting unit And a light emitting controller configured to control the blinking of the LED constituting the LED light emitting unit, the light emitting controller controlling the blinking of the LED by receiving power from the constant voltage supply unit.

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