KR101320511B1 - Safety sign board for preventing approach - Google Patents

Abstract

The present invention is installed on a shoulder of a breakwater or a coastal or riverside road to prevent a fall of a person due to carelessness or a fall of a vehicle due to carelessness, and moreover, to a safety sign for preventing access that has a more beautiful appearance.
To this end, the access preventing safety signs, the body of the identification sphere of the shape of the cube installed on the breakwater or road shoulder; A first fall hazard wording unit disposed on a first groove of one side of an upper surface of the identification port body; A second fall hazard wording portion disposed in a second groove portion in the front center of the identification port body; A first LED lighting unit embedded in the first groove and configured to project the first fall hazard phrase to the outside; Reflection parts disposed on both front sides of the identification port body and protruding forward and backward; A second LED lighting unit installed at an inner side of the reflector to illuminate the second fall hazard phrase and to reflect the reflected light to the outside through the reflector; A photovoltaic capacitor electrically connected to the first and second LED lighting units and installed in an upper surface of the identification port body to supply electricity; It is characterized in that the third groove formed on each side of the identification port body or formed on the front center upper side of the identification port body, the human body detection and warning unit for detecting the approaching person and notifying the fall prevention warning.

Description

 SAFETY SIGN BOARD FOR PREVENTING APPROACH}

The present invention relates to a safety sign for preventing access, and more particularly, it is installed on the shoulder of a breakwater or a coastal or riverside road to prevent a fall of a person due to carelessness or a fall of a vehicle due to carelessness. The present invention relates to safety signs for preventing access.

In general, protection measures are installed in the sharp curve area of the road to prevent the vehicle from escaping from the sharp curve area of the highway, ring road, coastal road, etc. in which the road is constructed above a certain height. do.

Such a protective measure is formed at a constant height corresponding to the width of the road. The protective measure is mainly formed of concrete, and a light reflector is attached to the inner side to induce safe driving.

These protection measures are designed to respond to unforeseen accidents.In case of hard to see ahead, such as driving at night, during rainy weather, or during heavy fog, especially when driving on a road, the driver may stop the sharp curve ahead. Frequently, people run without awareness and collide with protective measures.

In addition, in the case of a shoulder road of the coastal road or a highway without such a protective measure, there was a problem that a large accident such as a vehicle falls down due to a sudden curve zone or inattention of a driver.

In addition, in the case of conventional breakwaters, harbor moorings, or pontoon pontoon bridges, there are no separate safety signs to prevent the fall, leading to a fall accident due to carelessness during rainfall, snowfall or sunset.

Accordingly, the present invention has been made in view of the above problems, an object of the present invention, is installed on the shoulder of a breakwater, coastal road, riverside road, highway or the like, an infrared sensor type for detecting the approach of people or vehicles By providing a human body or vehicle detection and warning unit to increase the visibility to provide a new concept of access prevention safety signs that can prevent the fall of people due to carelessness or accidents such as a vehicle.

Another object of the present invention is to provide a safety sign for preventing access that can prevent a person from sitting or a bird or animal to climb on the safety sign for preventing access by installing a plurality of polygonal projections on the upper surface of the body of the access preventing safety sign. .

Another object of the present invention is to insert a semi-transparent light diffusion plate in the protective cover for protecting the LED lighting to mitigate the linearity of the LED evenly reflected throughout the fall hazard phrase or to further improve the waterproof and moisture-proof function in the LED module It is to provide safety signs to prevent access.

Another object of the present invention is to project the front and rear in the form of protruding forward and rearward on both sides of the LED lighting, the fall prevention phrases through the light generated from the LED lighting at a long distance is reflected through the reflector can easily check the facility It is to provide a safety sign to prevent more beautiful appearance.

Safety sign for preventing access according to the present invention for achieving the above object, the risk of falling of the first body disposed on the side of the identification groove body of the cube shape and the first side of the upper surface of the identification port body is installed on the breakwater or road shoulder. A stationery portion, a second fall hazard stationery portion disposed in a second groove portion in the front center of the identification port body, a first LED lighting portion embedded in the first recess portion and illuminating the first fall hazard stationery portion; And protruding forwards and backwards on both sides of the front surface of the identification port body, and reflecting the light from the surroundings, and installed on the inner side of the reflecting unit to illuminate the second fall hazard phrase. 2 LED lighting unit and the solar power storage is installed in the circular groove formed on the upper surface of the identification sphere body, supplying electricity to the first and second LED lighting unit A comprise. The solar capacitor is a disk-shaped condensing module plate seated in the circular groove for condensing sunlight, a storage battery installed and fixed inside the circular groove and stores the solar energy focused on the condensing module plate, the condensing module A circular transparent protector for protecting the plate from the outside, a waterproof and moisture proof rubber ring disposed between the lower edge of the transparent protector and the upper edge of the disk-shaped light collecting module plate, and fixed on the light collecting module plate A condensing module protective plate is installed and protects the condensing module plate, and an editorial adhesive plate attached to an upper surface of the condensing module protective plate.

Here, it is preferable that a plurality of polygonal pyramidal protrusions are installed on the upper surface of the identification port body to prevent sitting.

In addition, a separate circular groove is formed in the center of the upper surface of the identification port body, and the solar capacitor is installed therein, and the solar capacitor is mounted in the circular groove and collects a substantially disk-shaped condensing module plate for collecting sunlight. And a storage battery installed and fixed inside the circular groove to store solar energy focused on the light collecting module plate, a circular transparent protector for protecting the light collecting module plate from the outside, a lower edge of the transparent protector, and Waterproofing and moisture proof rubber ring disposed between the upper edge of the disk-shaped light collecting module plate, and an editorial adhesive plate and a light-adhesive module adhesive protection surface interposed up and down sequentially between the light collecting module plate and the transparent protector. It is preferably made to include.

In addition, it is preferable to further include a human body detection and warning portion formed on the front center of the third groove portion or the identification sphere body respectively formed on both sides of the identification sphere body. In addition, the human body detection and warning unit includes a human body detection sensor for detecting an approaching person, and a fall prevention warning unit for detecting when the person detected by the human body detection sensor approaches within a certain distance and notifies the fall prevention warning. It is preferable to make it.

The body detecting sensor may be an infrared sensor, and the fall prevention warning part may be a sound transmitting means for transmitting a fall warning sound, or a beacon for notifying a fall warning with light, or a combination of the sound transmitting means and a warning light. .

In addition, it is preferable that a translucent light diffusion plate is inserted between the first LED lighting unit and the first fall hazard phrase and between the second LED lighting unit and the second fall danger phrase.

In addition, the second LED lighting unit may further include a light amount sensor for automatically intercepting the power supply of the LED lighting unit according to the brightness of the surroundings.

In addition, it is preferable that protruding anchors are installed at both sides of the center lower side of the identification port body and fastened to the bottom surface through anchor bolts or screw bolts.

According to the safety sign for preventing access according to the present invention as described above, installed on the shoulder of a breakwater or a coastal or riverside road, carelessly provided with a human body or vehicle detection and warning unit in the form of an infrared sensor that detects the approach of a person or vehicle. It is possible to prevent the fall of a person due to the fall or the fall of a vehicle, etc., and multiple polygonal projections are installed on the upper surface of the body of the access prevention safety sign. In addition to preventing sitting, the translucent light diffusing plate is inserted into a protective cover to protect the LED light, thereby reducing the linearity of the LED so that it is evenly reflected on the entire fall hazard phrase or the waterproof and moistureproof function of the LED module is provided. There is an effect that can be improved more.

1 is an exemplary view showing an installation state of an access preventing safety sign according to the present invention.
2 is a combined perspective view of the safety sign for preventing access in accordance with the present invention.
3 is an exploded perspective view of the safety sign for preventing access according to the present invention.
Figure 4 is an exploded perspective view of a photovoltaic capacitor of a safety sign for preventing access according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that the present invention may be easily understood by those skilled in the art. .

1 is an exemplary view showing an installation state of an access preventing safety sign according to the present invention, Figure 2 is a perspective view of the combination of an access preventing safety sign according to the present invention, Figure 3 is an exploded disassembly of the access preventing safety sign according to the present invention 4 is a perspective view illustrating an exploded perspective view of a solar capacitor of an access preventing safety sign according to the present invention, which will be described together for convenience.

As shown, the safety sign (1) for preventing access according to the present invention, the hexahedron-shaped identification port body 10 is installed on the side of the breakwater (2) or the road (3), and the identification port of the body (10) A first fall hazard phrase 20 disposed in the first groove 11 on one side of the upper surface, a first LED lighting unit 22 for revealing the first fall hazard phrase 20, and the identification sphere body The second fall hazard phrase 30 disposed in the second groove 12 of the front center of the front side of the 20, and the reflective portion disposed on both sides of the front of the identification port body 10 and protrudes forward and backward ( 40 and a second LED lighting unit 50 installed on the inner side of the reflecting unit 40 to illuminate the second fall hazard phrase 30, and are electrically connected to the LED lighting unit 50. The solar capacitor 60 is installed on the upper surface of the identification port body 10 and the identification port of the body 10 to supply the It is arranged in the third groove 13 on both sides and is composed of a human body detection and warning unit 70 for detecting a person approaching and notifying a warning sound such as fall prevention.

First, in the illustrated example, the safety sign 1 for preventing access according to the present invention is installed on the shoulder of the breakwater 2 or the road 3 to be installed for the purpose of preventing the fall of a person or a vehicle, but is installed in a parking lot or the like. It can be installed in the form of a stop or a block jaw so as to detect the parking of the, of course, can also be installed on the side of the road frequented by wild animals to prevent collision with the vehicle due to the unauthorized crossing of animals. In addition, in addition to the breakwater or road described above, it can be installed in coastal or riverside roads, harbor (ship) mooring, fish farm bridges, and can be installed in bicycles (motor drives), taxiways, bridges (bridges), and fall or crash. Of course, it can be installed in any place to detect.

The identification sphere body 10 is a substantially hexahedral shape, preferably made of a synthetic resin material, but is not limited to the material in the present invention can be made of a variety of materials, such as plastic or aluminum alloy. In addition, it can be produced in various colors according to the characteristics of the installation site and the needs of the consumer.

In addition, the identification sphere body 10 having a substantially hexahedral shape may be installed in a structure in which five surfaces of the top plate, the side plate, and the front and rear surfaces are assembled according to the fastening element, but five surfaces may be installed depending on the application purpose. It can also be manufactured in one body. At this time, in the case of manufacturing integrally, it is possible to inject cement mortar or the like into the interior of the device to be more robust.

In the illustrated example, the anchor plate or screw bolt (not shown) through the anchor 80 protruding to the lower side of the side plate to form a fastening fixed to the bottom surface.

On the other hand, the first groove 11 is formed in the longitudinal direction in the front of the upper surface plate, which is the upper surface of the identification port body 10, the first fall hazard phrase 20 may be disposed and installed.

Here, in the illustrated example, the first fall hazard phrase 20 is described on both sides of the ad text, the center "falling danger access prohibition" is described.

In this way, various system (or guidance) texts can be posted for each facility or danger section in the first fall hazard phrase 20, and the advertisements are attracted to collect a certain part of the installation cost, thereby reducing safety. It is possible to expand the facilities.

On the other hand, the character is inserted into the first fall hazard phrase 20, in addition to the phrase "fall risk", insert a name that fits the characteristics of the section, for example, attention to wildlife, do not step down, stop, etc. Of course, the back can be inserted.

In addition, a cover portion 21 of a transparent material is formed to protect the first fall hazard phrase 20 in which the advertisement and the risk phrase are written.

In addition, the first LED lighting portion 22 for illuminating the first fall hazard phrase 20 on the lowermost inner side surface of the first groove portion 11 is embedded in a rod shape long in the longitudinal direction, the upper side As the first fall hazard phrase 20 and the transparent cover 21 is formed sequentially.

On the other hand, the first LED lighting unit 22 is electrically connected to the light collecting module plate 62 of the solar capacitor 60 to be described later to receive the solar power stored in the light collecting module plate 62. .

In addition, a plurality of scratch preventing protrusions 24 are formed on the upper side of the cover part 21 of the transparent material so as to prevent scratches from occurring in the cover part.

Meanwhile, a translucent light diffusing plate 23 is inserted between the rod-shaped first fall hazard wording unit 20 and the first LED lighting unit 22 to mitigate the linearity of the LEDs so that the first fall risk wording unit 20 is provided. It is possible to make the whole light evenly or to improve the waterproof and moistureproof function in the LED module.

The light diffusing plate may have a structure in which the light diffuser is applied in a powder form in a matrix resin, or the light diffuser and the pigment are uniformly dispersed in a sheet form.

At this time, preferred heat-resistant transparent matrix resin is a silicone resin, polymethyl pentene resin, polyether sulfon resin, polyether imide resin, polyarylate resin Or polymethyl methacrylate resins, and the amount of these matrix resins added is in the range of 50 to 99% by weight, preferably 82 to 97% by weight, based on the total weight of the composition. Examples of the light diffuser include silicone resin (refractive index 1.43), polyacrylate (polyacrylate: 1.49), polyurethane (refractive index 1.51), polyethylene (refractive index 1.54), polypropylene (polypropylene) 1.46), homopolymers such as nylon (refractive index 1.54), polystyrene (refractive index 1.59), polymethylmethacrylate (refractive index 1.49), polycarbonate (polycarbonate: refractive index 1.59) and copolymers thereof Organic light diffusing agents such as these; Silica (refractive index 1.47), alumina (refractive index 1.50 to 1.56), glass (refractive index 1.51), calcium carbonate (CaCO3: refractive index 1.51), talc (talc: refractive index 1.56), mica (mica: 1.56) Inorganic light diffusing agents such as barium sulfate (BaSO 4: refractive index 1.63), zinc oxide (ZnO: refractive index 2.03), cesium oxide (CeO 2: refractive index 2.15), titanium dioxide (TiO 2: refractive index 2.50∼2.71), iron oxide (2.90), Or any mixture thereof, but preferred is an organic light diffusing agent, most preferred is polymethylmethacrylate in terms of high transparency, and by appropriate light diffusion intended not to add the same kind as the matrix resin. This is necessary in terms of ensuring sufficient excitation of the phosphor.

The light diffuser described above has an average particle diameter of 0.2 to 30 µm, preferably 0.5 to 5 µm, and specifically 1.0 to 3.5 µm. 0.5 to 10 weight%, specifically 1.0 to 3.0 weight%.

On the other hand, a separate circular groove (not shown in the figure) is formed in the center of the upper plate that is the upper surface of the identification sphere body 10, the solar capacitor 60 is installed.

The photovoltaic capacitor 60 has a light collecting module plate 62 for converting and storing solar energy into electrical energy and is inserted into the circular groove (not shown in the drawing), and the light collecting module plate 62 is installed. A circular transparent protector 61 is provided for protecting from the outside.

The circular transparent protector has a rounded surface, such as a convex lens, so that rain falling in rainy weather flows naturally, and projections 65 are formed on the upper side thereof to protect the device.

The solar capacitor 60 is electrically connected to the first and second LED lighting units 22 and 50 which will be described later, and receives the solar power stored in the light collecting module plate 62. (50) can be supplied.

When the solar capacitor 60 is described in more detail, a light collecting module plate 62 having a substantially disc shape, which is mounted in the circular groove and collects solar light, is fixedly installed inside the circular groove, and the light collecting module plate ( A storage battery 64 for storing solar energy collected at 62, a circular transparent protector 61 for protecting the light condensing module plate 62 from the outside, and a lower edge of the transparent protector 61; And a waterproof and moisture proof rubber ring 63 disposed between the upper edge of the disk-shaped light collecting module plate 62.

The solar capacitor 60 including the transparent protector 61 is fastened and fixed through the fastening bolt 66.

In addition, the creative adhesive plate 67 and the light collecting module protective plate 68 may be sequentially interposed between the light collecting module plate 62 and the transparent protector 61, as shown in FIG. 4. The condensing module protective plate 68 is fixedly coupled to the four pillars 69 formed on the plate 62 with a bolt or the like, and the editorial adhesive plate 67 is adhered thereto with an adhesive or the like. The electronic component of the light collecting module plate 62 may be protected from direct sunlight by the light collecting module protection plate 68, and additional advertisement insertion may be performed by attaching an editorial adhesive plate 67 on the upper surface thereof.

Meanwhile, the light collecting module plate 62 is provided with a solar cell module, a plurality of LEDs, and a light amount sensor in the form of a substrate. Since the light collecting module plate is a well-known technology, a detailed description thereof will be omitted.

In addition, a plurality of triangular pyramidal protrusions 90 for seating prevention are installed in the entire area except for the circular transparent protector which covers and protects the solar capacitor 60 on the upper plate of the identification port body 10. It is designed to prevent these sittings and birds or animals from climbing. The triangular pyramidal protrusion 90 is preferably installed through a known insert injection method, but the present invention does not limit the method. In addition, the illustrated example shows a triangular pyramid shape, but the shape of a conical, square or pentagonal polygonal shape is also possible, and if the shape is pointed to prevent sitting, the shape of the present invention is not limited.

In addition, between the plurality of triangular pyramidal protrusions 90 formed on the identification sphere body 10 may be formed a logo or mark or a specific figure of the enforcement organization.

On the other hand, the second groove portion 12 is formed in the center of the front and rear of the identification port body 10, the second fall hazard phrases 30 may be disposed and installed.

In the second fall hazard phrase 30, the phrase "fall hazard" is largely described, and although not shown, the advertisement and the danger phrase are described, and the protection of the second fall hazard phrase 30 is described. In order to form a separate transparent cover.

Here, an eave portion (not given a drawing number) is provided in the longitudinal direction on the upper surface of the second groove portion 12 into which the second fall hazard phrase portion 30 is inserted, and both sides are reflected. The portion 40 is protruded.

The eaves may be elongated in the longitudinal direction to prevent rainwater or the like from flowing into the second grooves 12.

In addition, the human body sensor unit 71 is installed in the center of the elongated portion (not shown in the figure) elongated in the longitudinal direction to detect the approach of an object, that is, a person, an animal or a vehicle. have.

The fall prevention warning unit 72 is installed next to the human body detection sensor unit 71 to detect an approaching person (or an animal or a vehicle) and to notify a warning sound such as fall prevention.

The reflector 40 is disposed on both sides of the identification port body 10 in a form protruding forward and rearward, and is formed in the longitudinal direction back and forth, left and right of the main body of the identification port body 10 even at a long distance. Fall prevention phrases through the light generated from the LED lighting unit 50 is reflected through the reflecting unit 40 can be easily confirmed the facility.

The reflector 40 has a retroreflective body attached to its surface for easy identification so as to maintain and improve identification even at sunset. The reflector 40 is formed toward a light source such as a headlamp or a flashlight of a vehicle. In consideration of light sources of various angles of incidence, it is preferable to form the light in the form of an image below.

On the other hand, the second LED lighting unit 50 is installed on the inner side of any one of the two reflecting portions 40 formed on both sides of the front face of the identification port body 10, the LED module 51 and the LED It is formed with a translucent or transparent protective cover 52 to protect the module 51 is to reveal the second fall hazard phrase (30).

In addition, the second LED lighting unit 50 is electrically connected to the light collecting module plate 62 of the solar capacitor 60 to receive the solar power stored in the light collecting module.

Here, the LED module 51 of the first LED lighting unit 50 is the LED module 51 is installed in a form in which the LED is inserted into the front of one side of the reflector 40 vertically when the sunset without pedestrian light source When the light of the LED module 51 automatically reflects the reflecting portion at the time, the viewer can easily identify.

In addition, although not shown, the second LED lighting unit 50 may further include a light amount sensor so as to automatically control the power supply of the second LED lighting unit 50 according to the surrounding brightness. As described above, when the ambient light of the second LED lighting unit 50 is dark due to the installation of the light quantity detecting sensor, the LED of the second LED lighting unit 50 is automatically turned on under the control of a controller (not shown), and the surrounding is bright. In this case, the LED which is automatically turned on under the control of the controller (not shown) is disturbed.

On the other hand, the protective cover 52 for protecting the LED is inserted into a translucent light diffuser (not shown) to mitigate the linearity of the LED to evenly illuminate the entire second fall hazard phrases 30 or waterproof in the LED module And it is possible to further improve the moisture-proof function.

As described above, the light diffusing plate may have a structure in which the light diffuser is applied in powder form in the matrix resin, or the light diffuser and the pigment are homogeneously dispersed in a sheet form.

On the other hand, on both sides of the identification sphere body 10, the third groove 13 is formed, respectively, the human body detection and warning unit 70 is built-in, it is covered by a transparent cover to be protected.

The human body detecting and warning unit 70 includes a human body detecting sensor 71 detecting an approaching person or an animal, and a person or animal detected by the human body detecting sensor 71 under the control of a controller (not shown). The fall prevention warning unit 72 is configured to detect the case of approaching within a certain distance and to notify a warning sound such as fall prevention.

The type of the human body sensor 71 is composed of a transmitter (light emitter) and a receiver (receiver), and when the infrared beam is blocked, an infrared sensor for detecting an approach of a person or an animal is immediately preferred. A wireless human body thermal sensor and the like can also be used, and the present invention is not limited thereto.

Here, as described above, the human body detection sensor (infrared ray detection sensor) 71 is installed while maintaining a constant interval on the front and both sides of the identification sphere body 10 within a range of people or animals within a certain distance Upon arrival, the returning infrared beam is automatically cut off and at the same time, the controller detects this and warns the user through the fall prevention warning unit 72.

Since the human body sensor 71 in the form of an infrared sensor is a well known technology, further description thereof will be omitted.

On the other hand, the fall prevention warning unit 72 may be in the form of a beacon or a warning light for notifying the fall warning by light, or a combination of them.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed embodiments, but various changes and modifications may be made without departing from the spirit and scope of the present invention. And this is also within the scope of the present invention.

1: safety signs for preventing access according to the present invention
10: identification body 11: first groove
12: the second groove 13: the third red
20: first fall hazard phrase 21: cover portion of the transparent material
22: first LED lighting unit 23: light diffusion plate
24: scratch prevention projections 30: second fall hazard phrases
40: reflecting unit 50: second LED lighting unit
51: LED module 52: protective cover
60: solar capacitor 61: circular transparent protector
62: disk-shaped light collecting module plate 63: rubber ring for waterproof and moisture proof
64: storage battery 65: projection
66: fastening bolt 67: editorial adhesive plate
68: condensing module board protection and editorial adhesive side
70: human body detection and warning unit 71: human body detection sensor
72: fall prevention warning section 80: anchor
90: triangular pyramid protrusion

Claims (8)

Cube-shaped identification body installed on the breakwater or road shoulder,
A first fall hazard wording unit disposed on the first groove of one side of the upper surface of the identification port body;
A second fall hazard wording portion disposed in a second groove portion in the front center of the identification port body;
A first LED lighting part embedded in the first groove part and illuminating the first fall risk wording part;
A reflection part disposed to protrude forward and backward on both front sides of the identification port body and reflecting light from the surroundings;
A second LED lighting unit installed at an inner side of the reflecting unit to illuminate the second fall risk phrase;
Is installed in a circular groove formed on the upper surface of the identification port body, and comprises a solar capacitor for supplying electricity to the first and second LED lighting,
The solar capacitor
A light collecting module plate of a disk shape seated in the circular groove to collect sunlight;
A storage battery installed and fixed inside the circular groove and storing solar energy focused on the light collecting module plate;
A circular transparent protector for protecting the light collecting module plate from the outside;
Waterproof and moisture-proof rubber ring disposed between the lower edge of the transparent protector and the upper edge of the disk-shaped light collecting module plate,
A light collecting module protection plate fixedly installed on the light collecting module plate to protect the light collecting module plate;
Safety sign for preventing access characterized in that it comprises an editorial adhesive plate attached to the upper surface of the light collecting module protective plate. The method of claim 1,
Safety sign for preventing access, characterized in that a plurality of polygonal projections for preventing seating is installed on the upper surface of the identification port body. delete The method of claim 1,
Further comprising a third groove portion formed on both sides of the identification sphere body or a human body detection and warning portion formed on the front center upper side of the identification sphere body,
The human body detection and warning unit
A human body detecting sensor for detecting a person approaching,
And a fall prevention warning unit configured to detect a fall detection warning when a person detected by the human body detecting sensor is approached within a predetermined distance and to notify a fall prevention warning. 5. The method of claim 4,
The human body detection sensor is an infrared sensor, and the fall prevention warning part is a sound transmitting means for transmitting a fall warning sound or a warning light indicating a fall warning with light, or a combination thereof, characterized in that the safety signs. The method of claim 1,
A translucent light diffusion plate is inserted between the first LED lighting unit and the first fall hazard phrase and between the second LED lighting unit and the second fall danger phrase, respectively. The method according to claim 6,
The second LED lighting unit further includes a light quantity detecting sensor for controlling the power supply of the LED lighting unit automatically according to the surrounding brightness. The method of claim 1,
Safety signs for preventing access, characterized in that the protruding anchor is installed on both sides of the lower side of the identification port body is fastened to the bottom surface through the anchor bolt or screw bolt.

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