JP2008213806A - Light emitting diode triangular warning plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new upright stable water-proof and portable LED triangular warning plate capable of freely changing signal form, being repeatedly charged by using solar energy, and capable of remote-controlling a working field at night by using an IC tab. <P>SOLUTION: Inclined sides of the apex part of the triangular warning plate 1 with LED are detachably coupled to each other, and the inclined sides and the bottom side in both the bottom angles are connected freely to turn with friction and freely to be fixed so that marks and letters of a special form can be easily formed. A solar panel S and an IC tab Tb are installed in the top surface of a second leg part 3, and a magnetic body is installed in the lower surface thereof to charge the power to be consumed by the triangular plate, enabling remote control of the working field. Further, a water-proof effect and signal luminance and upright stability are improved by using a transparent cover comprising a specular face and a square flange type magnetized body with the triangular plate. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

          The present invention relates to an LED triangular warning plate that can be used at night traffic control, traffic accident site or civil engineering site.

Conventionally, in order to prevent secondary accidents such as night traffic accidents, passenger cars and the like are legally required to carry a red reflective triangular plate.
However, when actually used at the accident site, especially under weather conditions such as rainy weather and heavy fog, it is difficult to identify or confirm the light. There was a danger that it was canceled and in some cases could lead to a secondary accident. Therefore, various triangular warning devices with red LEDs have been proposed in order to display and confirm the position or situation of the accident vehicle at night by attaching red LEDs with high brightness to such triangular warning plates. More recently, the latter is freely folded around the connection point between the base and the hypotenuse of this type of triangular plate, and at the same time, fixed at an appropriate angle to form warning lights of various geometric shapes, Triangular warning boards with LEDs have been proposed that ventilate the attention of traffic vehicles or passers-by more.
Utility model registration No. 3055441 JP 2002-309523 Utility model registration No. 3118546

Problems to be solved by the invention

          However, in the technique of Patent Document 1, the bottom side of the triangular plate with LED is fixed to the storage case, and the oblique side thereof is rotatably fixed to the other end of one oblique side pivotally supported by one end of the bottom side. Therefore, when forming a triangular signal, even if it can be formed accurately and easily, when forming a signal of another shape, the multi-end of the hypotenuse fixed to the base Since the other hypotenuse must be fixed at the desired angle, it is difficult to overcome the gravity of the hypotenuse in proportion to the number of uses with just the contact friction force of the rotatable connecting means. Has the disadvantage that it cannot be fixed and maintained by friction.

        On the other hand, in the technique of Patent Document 2, in order to improve the difficulty of forming a geometric signal on the bottom side due to the frictional force of such a simple connection means, the connection means between the bottom side and the hypotenuse is connected to a bolt. In addition to the simple connecting means of the nut, it is possible to rotate and fix both hypotenuses with respect to the bottom by adjusting the tightening strength, and geometric shapes that are appropriately formed depending on the operation of these hypotenuses, It is characterized by the fact that it is constructed so as to prevent traffic accidents by alerting the passing vehicle and passersby by specific light signals such as symbols or characters, so that the purpose of the desired period can be achieved. However, every time the signal shape is changed, there is a problem that the connecting means has to be loosened or tightened.

        Therefore, in the patent document 3, the present applicant makes the folding LED triangular plate that can change this kind of signal shape a power-saving circuit, and at the same time, connects the respective hypotenuses and bases between these two sides. It is connected by a powerful locking mechanism that has a pair of face-to-face contact parts that have a special friction surface, and can be rotated when the slant is loaded, and can be fixed at the place when the load is released. We proposed an LED triangle plate constructed as described above and succeeded in improving the shortcomings of this type of signal shape-changing LED triangle plate.

        The present invention further improves this kind of LED triangular plate, physically enhances its light emission brightness and waterproofness, and at the same time, can efficiently enhance its charging function and signal function as well as remotely. It is an object to provide a triangular plate of this kind that can improve work efficiency by intensively managing a plurality of work sites and accident sites, and at the same time, can accomplish the work safely.

Means for solving the problem

In order to solve such problems, the LED triangular plate of the present invention has a folding storage and special shape forming mechanism that uses the technique of the above-mentioned Patent Document 3 of the present applicant, but as a further mechanism. First of all, it is characterized in that a transparent triangular waterproof bag with a reflecting plate for enhancing the luminance and waterproofness of an optical signal is used in combination.
That is, this bag is composed of a transparent part on the front surface and a light reflecting surface part having a mirror surface such as an aluminum foil adhering surface or a vapor deposition surface on the inner surface of the bag, and the transmitted optical signal is the bag. It is characterized by being constructed so that the rear side goes straight without leaking and is waterproof when it rains.

        Furthermore, an IC tab for the Global Orientation Measurement System (GPS) is attached to an appropriate place on the three sides of the signal section of the triangular plate, and the place of use is displayed via an artificial satellite. The second feature is that the site or accident site is specified and managed remotely.

In addition, as a third feature, the LED triangular plate of the present invention is connected to a dry battery on the lower surface of a solar panel having an appropriate light receiving surface on the upper surface of a rotatable second cruciform leg portion for upright stability. A charging terminal that can be used is installed, and an appropriate optical sensor is used to charge at sunshine and to discharge at sunset to automatically transmit an optical signal.
Therefore, a new and efficient foldable and signal-shaped LED that can be recharged in the daytime and automatically lit at the time of sunset by combining a rechargeable battery and a light sensor in an unattended work site or accident site. A triangular plate can be provided.

        In addition, an appropriate magnetic body is attached to the lower surface of the second leg portion other than the solar panel terminal, and due to its gravity, the triangular plate is kept upright and, for example, adsorbed to the vehicle body or the loading platform, Alternatively, a metal plate that adsorbs such a magnetic material is formed in a suitable shape and carried, installed at the installation location of this triangular plate and adsorbed, and its upright transmission posture is stabilized. Is another feature.

The invention's effect

        In addition to the effect described in Patent Document 3, the triangular warning plate with LED of the present invention having such features has the position of the work site or accident site, the name of the worker, the work content, etc., depending on the mounted IC tab. While it can be remotely managed and directed remotely, its waterproof transparent reflective cover allows it to radiate without damaging its light signal brightness, not to mention the waterproof effect even in rainy weather, The warning effect can be improved.

        Furthermore, due to the action of the solar panel of the appropriate area mounted on the upper surface of the second leg for upright stability and the light sensor provided in the charging circuit, the power is charged during sunshine and at sunset. A magnetic body that is configured to automatically emit and stop an optical signal after being discharged, eliminates the need for battery replacement, signal switching, and the like, and also serves as a weight attached to the lower surface of the second leg. Depending on the condition, it can be adsorbed on the car body or the cargo bed, or it can be adsorbed on a metal base of an appropriate shape that adsorbs this magnetic substance, even in bad weather, on the car body, on the cargo bed or on the ground. Thus, the optical signal can be continuously sent.

The best mode for carrying out the present invention is based first on the implementation of the technique of the applicant's patent document 3, and the following additional technique is added to this technique to Stabilize the floodlight, stabilize the floodlight posture in bad weather, check the installation work position of each signal light from a remote location, centrally manage the work in each location, and improve the work efficiency of each At the same time, it is configured to ensure the safety of workers. That is, (1): The conventional triangular plate with LED is made foldable, and the signal shape can be changed geometrically or symbolically.
(2): The above triangular plate is covered with a transparent cover of the same shape, and the inside of the back surface is covered with a mirror surface so that the transmitted optical signal can be transmitted efficiently through the transparent front without leaking backward. At the same time, it should be constructed so that it is waterproof even in rainy weather.
(3): A solar panel with an appropriate area is mounted on the upper surface of the rotatable second leg portion of the triangular plate, and when it is sunshine, the built-in battery is charged and at the same time, depending on the case, light According to the sensor, etc., the battery is discharged at the same time as sunset, and the light signal is automatically transmitted.
(4) A magnetic body of an appropriate size is attached to the lower surface of the rotatable second leg portion instead of the weight to stabilize the upright posture of the triangular plate, and at the same time, a metal such as a vehicle body or a loading platform It is constructed so that it can be installed in a stable posture on either the vehicle body or the ground by adsorbing to a part or combining a suitable accompanying metal pedestal and adsorbing a triangular plate on it.
(5): A GPS measurement IC tab is attached to an appropriate location on the triangular plate, for example, the upper surface of the second leg or each side of the optical signal transmission, and a specific signal is transmitted from each installation or work position. In addition, the remote management from the centralized management department via the artificial satellite, always configured to be able to work safely and accurately by grasping the work place and the situation of the workers.
Specific preferred embodiments will be described in detail below with reference to the drawings.

        The triangular plate (1) with LED of the present invention includes a fixed leg (2) (hereinafter referred to as a first leg) and a rotatable upright posture stabilizing leg (3) as described in Patent Document 3 of the present applicant. ) (Hereinafter referred to as the second leg) and two hypotenuses on the bottom part (A) fixed on the pair of leg parts by friction fixing type connecting members (8) and (9) with disc springs, respectively. One end of each of the parts (B) and (C) is rotatably and fixedly connected, and the other ends of the two connected sides are elastically detachable by a bushing-like elastically actuated hook (7). The power supply unit (10) mounted in the bottom plate (4) of the bottom side (C) is operated by the start switch (11) to transmit a red light signal as necessary. It is based on the composition.

        Also, these bases and hypotenuses (A), (B), and (C) are each a base (6) on which a suitable number of red LEDs are mounted on plastic bottom plates (4), (4), and (4) of appropriate strength. ) (6) (6) is mounted, and the red reflectors (5), (5) and (5) with a U-shaped cross-section are coated and fixed thereon, and as described above, each vertex is elastically operated. A triangular hook is formed by a mold hook (7) and a friction fixed type coupling member (8) (9).

        Furthermore, in the bottom plate (4) of the bottom side (A), a power supply unit (10) containing two AA batteries, a terminal (T) for solar panel (S) and leads described later. And a terminal (13) of a plug (15) connected via a wire (14), further connected to the battery part, and lit in a switchable manner with the LEDs on the respective sides by the start switch (11). A white LED for illumination (12) is attached.

Circuit diagrams of these bottom sides and oblique sides (A), (B), and (C) are shown in FIGS.
The circuit shown in FIG. 3 includes a switch circuit including a predetermined number of transistors (17), a capacitor (18), and a resistor (19) only on the base (A), and is connected in parallel by specifying the time constant. Are configured to define the flash cycle of the LED groups (20), (20), (20),.
As described above, this circuit is configured such that when the current supplied from the battery power supply unit (10) is supplied to the emitter terminal (21) of the transistor via the switch (11), the LED (20) is provided at a predetermined cycle. (20)... Are synchronously flashed and transmitted, and when this switch piece is switched to the terminal (22) of the white LED illumination circuit (D), the red LED light emission signal portion is turned off and used for illumination. The white LED (12) is turned on to illuminate the surrounding area.

        The circuit shown in FIG. 4 is configured so that the switch circuit is connected in each of the sides (A), (B), and (C), and the flash cycle of the LED of each circuit is tuned. If the flash cycle is slightly delayed in sequence, the signal flashes as if it flows from the bottom (A) to (C), which can further increase the signal effect. However, the circuit becomes slightly complicated and slightly expensive, as described above. is there.

        Such a red signal flashing circuit is configured to be energized by a normal dry battery (16) housed in the power supply unit (10). Instead of a rechargeable battery, the solar panel (S) can be used to charge the power generated during sunshine and discharge the LED red signal at the same time as sunset. In addition, it is advantageous that the switching between charge and discharge is automatically performed by an optical sensor provided in the circuit.

        On the other hand, this kind of LED triangular plate (1) is rotatable in the (r) direction under the first leg (2) that fixes the same to the bottom of the triangular triangular plate (1). In order to stabilize upright signal portions of various shapes formed by the hypotenuses (B) and (C) with reference to the base (A), The second leg portion (3) is appropriately rotated and intersects the first leg portion (2), and is particularly configured to prevent the tipping in the front-rear direction due to wind pressure or the like.

        On these legs, a box-shaped bottom plate (4) of the bottom side (A) is mounted. Inside the bottom plate, a power supply unit (10), a white LED for illumination (12), a solar panel In addition to the connection terminals (13) and the like, the switch circuit portion and the bottom LED substrate connected to these portions are accommodated, and the bottom plate itself is also attached to the red reflector (5). Therefore, it is covered.

Such a bottom part (A) is also provided at the opposite end parts of the oblique side parts (B) and (C) having the same structure and the friction fixed connection member (8) and (9) with a disc spring, which will be described later. Accordingly, an elastically actuated hook (7) is attached to the other apex of both of them so that they can be connected or separated with one touch.
Accordingly, these hypotenuse parts (B) and (C) are released from the engagement by the elastically actuated hook (7), so that the arrow points with the friction fixed coupling members (8) and (9) as axes. Both are rotated 180 degrees in the directions of (α), (α ′), (β), and (β ′), and can be fixed at a desired point between them as necessary. Each side is fixed at a position, and various LED light signals such as triangular, X, left-pointing arrow, right-pointing arrow, or block type are formed and transmitted to easily and reliably pay attention to traveling vehicles and passers-by. Can be aroused.

        In order to transmit such various optical signals, in the present invention, the bottom part (A) and the oblique side parts (B) and (C) which are rotated and fixed with respect to the bottom part (A) are provided with respective lead wires ( (Not shown) and waterproofly connected in the bottom plate (4) and the red reflector (5), and from the power supply unit (10) through the substrate (6) in the bottom side to the substrates (6) and (6) in the left and right oblique sides. It is configured to energize and transmit an LED red signal of a desired shape.

Each of the connecting members (7), (8), and (9) of the LED triangular plate (1) electrically and mechanically connected as described above is an elastically actuated hook for fixed connection at any one point. The two points must be composed of a pivotable friction-fixing type connecting member, but the mounting position of these is not limited. For example, the elastically actuated hook member has an oblique side (B) (C). The connecting member (7) may be used, or the connecting member (8) or (9) between the bottom side and the hypotenuse (A) (B) or (C) may be used.
However, in the following explanation, (7) of these connecting members will be described as elastically actuated hooks, and (8) and (9) will be described as friction fixed connecting members.

        FIG. 6A shows the details of the elastically actuated hook (7), but this member is preferably made of an inexpensive synthetic resin such as hard vinyl chloride, and has a protrusion (such as a detent for a fishing hook). 25) and the split groove (28) are illustrated as a bushing-like piece with a flat head provided on the body (24).

In the connecting operation of the member (7), first of all, this member is press-fitted into the interconnecting hole at the apex of the triangular plate from the red reflector (5) side of one oblique side (C) of the LED triangular plate. As shown in the figure, the return projection (25) larger than the inner diameter of the connecting hole penetrates the red reflector (5) by the elastic action of the split groove (28), and the bottom plate (B) of the opposite oblique side (B) 4) Enter the through hole (26) of the box (H).
Therefore, when the box part (H) of the bottom plate (4) is pressed from the direction of the arrows (F) and (F '), the split groove (28) is compressed in the (f) and (f') directions, and the detent protrusion (25) ) Pass through the through hole (26), and the box (H) of the bottom plate (4) is sandwiched at the position of (H ') and connected to each other in a state of overlapping the oblique side (C).

        In order to release the hypotenuses (B) and (C) coupled as described above to create an optical signal having a desired symbol, character, or figure, first, the tip of the split groove (27) of the hook member (7) is provided. (F) Compressed in the direction (f ′), the outer periphery is reduced, and the outer periphery of the return snap projection (25) is also made thinner than the hole inner diameter of the bottom plate box part (H ′) of the oblique side part (B). After removing this bottom plate box part (H ') from the shoulder of the return projection (25), returning it to the original (H) state and removing it, as described below, the friction fixing connected to the other end The mold connecting member (8) or (9) is rotated and fixed to a desired position with respect to the fixed base (A) to form a desired shape, a desired symbol, and the like, and an optical signal is transmitted.

        That is, as shown in FIG. 6 (B), this member (8) or (9) has a pair of high-hardness metal plates (29) (29) having high wear resistance and having opposite surfaces. , Comprising a combination of a single disc spring (33), a pair of double nuts (34), (34), and a single clamping bolt (31). In some cases, the pair of high-hardness metal plates (29) The pair of high-hardness metal plates, each having a suitable elasticity between at least one leather synthetic resin, a rubber plate, etc., having appropriate elasticity between and 29 (29) In (29), as indicated by (s) (s'), the bottom plate (4) and the oblique side (B) of the reflector (5) of the oblique side (A) of the LED triangular plate (1) It consists of a structure fixed between the bottom plates (4).

        Due to such a structure, the fastening bolt part (31) of this connecting member has a reflecting plate (5) (fixed surface) on the bottom side (A) and a bottom plate (4) (movable surface) on the oblique side (C). Through the pair of high-friction high-hardness metal plates (29) and (29), depending on the disc spring (33), double nuts (34) and (34), and the bolt portion (32). The movable surface can be freely rotated with respect to the fixed surface by tightening firmly and depending on the high frictional force of the metal surfaces (35) (35) facing each other on the bolt body (30). It is configured to block.

        Due to such a structure, the hypotenuses (B) and (C) of the LED triangular plate (1) have a force greater than a predetermined force on the bottom (A), that is, a friction force of the rough surfaces (35) and (35). It is rotated only by the force applied to the movable surface (4), and in the case of less than that, since it is fixed without rotating with respect to the fixed surface, (α) (α ′) (β) in FIG. It can be freely rotated and fixed in the direction of (β ′) up to 180 degrees with respect to the base (A), and various figures, characters, and signals shown in FIG. 7 can be formed, Various optical signals can be transmitted according to these shaped bodies.

The light signal of such an LED triangular plate is a conventional fastening member (8) or (9) comprising a bolt (37), a sandwich plate (38), a washer (40) and a thumbscrew (41) in FIG. In this case, the sandwiching plate (38) is made of a material having a high hardness, and as shown in FIG. The contact surfaces (42) on the bottom plate (B) and (C) side (movable part side) are fixed at appropriate positions, and it is advantageous to use a washer (40) having a strong elasticity such as a spring washer. is there.
However, with this means, when the number of tightening, loosening and rotating of both hypotenuses, that is, the number of times of character or symbol signal shaping, the fixing force (frictional force) of both contact surfaces is weakened and finally it cannot be fixed completely. Therefore, the inconvenience that the pinch plate (38) or the washer (40) or the wing nut (41) must be replaced with a new one frequently occurs.

        Thus, this kind of LED triangular plate (1) can be removed by one-touch removing the connecting member (7) attached to the intersection of the two oblique sides (B) or (C) as necessary. Turn a predetermined angle in the direction of the arrow (α) (α ′) or (β) (β ′) to rotate and shape the signal, symbol, character or shape of the triangle, X, arrow, etc. In addition, it can be fixed and can be warned or informed by the optical signal, and the attention of the traveling vehicle or passerby can be strongly evoked because of the specificity of the signal.

        In addition, such a triangular plate with LED (1) takes into consideration the manufacturing cost and the frequency of use of the triangular plate when used as equipment for passenger cars, etc., except for all-weather and long-term civil engineering products. In general, the triangular plate of the present invention has a transparent optical signal emitting surface, and a mirror surface or an aluminum surface is deposited on the inner side of the back surface. Alternatively, a plastic cover (Cv) having an attached reflecting surface (R) is used in combination with the triangular plate in a humid place or in dense fog, rainy weather, etc., and used for its waterproofness and for enhancing the brightness of the transmitted signal. Are considered.

As shown in FIG. 5, the cover (Cv) is formed of a transparent plastic bag having a triangular front surface having a predetermined thickness, and a chuck (43) is provided at a portion corresponding to the hypotenuse (B) or (C) of the triangular plate. The entire triangular plate (1) is configured to be accommodated in the bag with almost the entire surface opened. At the same time, the light signal passes straight through the transparent film on the entire surface at the time of lighting. Light diffused in all directions is reflected in the front direction by the mirror surface on the inner surface of the bag to supplementarily increase the luminance of the optical signal.
Of course, this cover can be used not only in rainy weather but also in dense fog and fine weather, but it is needless to say that its use is limited only to the transmission of triangular signals. It is a place.
The support (2 ′) of the first leg (2) provided below the base (A) of the triangular plate is inserted through the opening provided near the lower end (44) of the cover (C). Since the inner triangular plate body is supported, the second leg portion (3) freely rotates in the direction of 360 ° to 360 ° (f) in the cutout portion of the inner bottom of the cover. It intersects with the first leg at an angle so that the triangular plate can be supported stably.

Further, in a vehicle having a large loading platform such as a truck or a wagon or a vehicle compartment, a metal platform (F) made of a magnetic material adsorption plate such as iron having a relatively wide base as shown in FIG. Installed in a square place, insert both legs (2) and (3) of the triangular plate into the square groove (H), and adsorb the magnetic body (Mg) provided in the lower part in the groove to light up, It can be configured to notify and warn the passing car or passerby of the position or the accident situation from the loading platform or the passenger compartment.
Of course, the magnetic body (Mg) can be directly adsorbed on the vehicle body, but the surface of the vehicle body is a curved surface and the coating may be peeled off at the time of removal.
In particular, the signals on the three sides (A), (B), and (C) of the warning plate installed on the cargo bed are effective because they can reach a relatively far distance. Due to the quality base (S) and relatively wide flange part (b), it can be mounted stably, and if fixed with bolts, etc., there is a benefit that it can be stably installed in an appropriate place such as a cargo bed. is there.
Alternatively, the triangular plate may be adsorbed on the metal base (F) as shown in FIG. 8B with the first leg (2) and the second leg (3) crossed, and installed in an appropriate place such as the ground. In this case, the groove (H) must be provided with an orthogonal groove (H ′).

        Furthermore, as shown in FIG. 2, the ubiquitous IC tab (Tb) attached to an appropriate place of the triangular plate with LED of the present invention, for example, one end of the second leg (3), specifies the radio wave transmitted by each. Then, for example, it is mounted on (A), (B), (C),... Such as a road work vehicle or a highway accident countermeasure vehicle, and this is used at each work place as shown in FIG. The specific radio wave of each triangle plate to be transmitted is transmitted via the artificial satellite (As) or directly to the management office (O), and the work position, work or accident situation is reported sequentially, and also in the office These information is displayed on the map (M) by radio waves of the global orientation measurement system sent from the artificial satellite, and the positions of the workers (A1) (B1) (C1). Identify and grasp the appropriate instruction commands as necessary Can be configured to, for example civil engineering work, traffic accident processing work, at the scene of a traffic enforcement work, it is possible to use this instrument or system to extremely merit.

        It is a front perspective view of the triangular warning board with LED of this invention.         It is drawing which shows the one aspect | mode of the board | substrate electric circuit of the triangular warning board of FIG.         It is a rear view of the triangular warning plate of FIG.         It is drawing which shows the other aspect of the board | substrate electric circuit of the triangular warning board of FIG.         It is a partially cut front view which shows the usage condition of the waterproof cover for triangular warning boards of this invention, and the cover for optical signal reinforcement.         It is an operation relation explanatory view showing each operation of connection of the three sides of the triangular warning board of the present invention, separation, rotation, and fixation.         2 is a schematic diagram showing the shape of an optical signal that can be formed by the triangular warning plate of the present invention.         It is explanatory drawing which shows the adsorption | suction auxiliary tool of the triangular warning plate of this invention, and those combined use.         It is GPS utilization explanatory drawing for pinpointing the use position of the triangular warning board of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Triangular warning board with LED of this invention 2 Fixing leg 3 Rotating upright posture stabilization leg 4 Signal part bottom board 5 Signal part red reflector 6 LED board 7 Elastic operation type hook 8 Friction fixed type connection member 9 Friction fixed type connection Member 10 Power supply part 11 Switch piece 12 White LED
13 Solar panel connection terminal S Solar panel Tb IC tab Mg Magnet A Triangular plate bottom side B with LED Triangular plate oblique side C with LED Triangular plate oblique side with LED

Claims (4)

      It is an upright stable type triangular plate consisting of three plastic box-like LED light emitting signal parts with reflectors, and the apex angle connecting part is elastically detachable, and the base angle of each hypotenuse is In the folding LED triangular warning plate that can be rotated and fixed by 180 degrees, the first leg fixed to the bottom light emitting signal part has a solar panel and an IC tab of a desired area at the lower part. A battery that is rotatably supported by second leg portions each having a magnetic body that also serves as a weight on the upper surface, and is rechargeable via a connection terminal on the lower surface of the second leg portion. The radio waves transmitted from the IC tab are specified and registered for each user of the triangular plate, and the radio waves are received via the artificial satellite or not, and the installation and use status of the triangular plate can be monitored remotely. LED triangular warning board, characterized by management.       2. The light signal of the LED triangular warning plate is automatically switchable at a specific illumination level at sunset and rising sun by using an optical sensor provided at an appropriate position of the base circuit. LED triangle warning board.       The plastic triangle bag having the same shape as the assembled shape of the LED triangular warning plate according to claim 1, wherein the front surface is transparent and the inner surface of the rear surface is mirror-finished, covers the assembled triangular plate, and has a waterproof effect and an optical signal reflecting effect. A combination of these two, characterized in that it is structured to strengthen       A rectangular bowl having a longitudinal groove substantially equal to the shape and size of the first leg of the LED triangular warning plate according to claim 1 and a short width groove intersecting at the center of the groove on the back. With the first and second legs of the triangular plate overlapping with each other, or with the legs open at a right angle, they are attracted and fitted into the groove to further stabilize the upright posture. A combination of these two, characterized in that

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