KR20100031807A - Safety jacket with light emitting diode - Google Patents

Abstract

PURPOSE: A safety jacket including a light emitting diode is provide to specifically distinguish a wearer at a dark place without any light in the night time. CONSTITUTION: A safety jacket including a light emitting diode comprises the following: a waist belt(11) and a shoulder mounting unit(12); a battery(15) attached to the waist belt or the shoulder mounting unit; a LDO(low drop out regulator) outputting the voltage of the battery after lowering; a microprocessor outputting the voltage in a frequency which is decided in advance; a first transistor turned on with the voltage while being connected to the microprocessor; a second transistor turned on with the voltage while being connected to the microprocessor; multiple first light emitting diodes(14) installed to the waist belt or the shoulder mounting unit while electrically connected in between the LDO and the first transistor; and multiple second light emitting diodes installed on the waist belt or the shoulder mounting unit.

Description

Safety jacket with light emitting diodes {SAFETY JACKET WITH LIGHT EMITTING DIODE}

The present invention relates to a safety jacket having a light emitting diode.

A safety jacket is a safety article worn by a traffic officer, an environmentalist, a road construction site, and a construction site worker on the upper body so that a driver or other people can easily identify at night, and includes a waist belt and a shoulder strap, the waist belt and It is composed of a reflector that is attached to the shoulder hanger to reflect light.

Therefore, when the shoulder straps are worn on both shoulders and the waist belt is wrapped around the waist, the wearing is completed, and when the external light is received in the worn state, it is easily reflected by the reflective paper.

However, such a safety jacket has a problem in that it is impossible to identify in a dark place because the reflector must function in light.

Therefore, in the case of the driver, when the headlight light reaches the range of light, the driver's existence is not recognized. Therefore, a traffic accident has occurred due to lack of time and coping with the situation.

In particular, unlike straight roads, curved roads should be more careful because the headlights deviate to the right when the road is bent to the right and left when the road is bent to the right.

SUMMARY OF THE INVENTION The present invention has been made to overcome the above-mentioned problems, and an object of the present invention is to provide a light emitting diode that emits light by itself, thereby having a light emitting diode that can clearly identify the wearer in a dark place where there is no light at night. To provide a safety jacket.

Another object of the present invention is to provide a safety jacket having a light emitting diode capable of keeping the use time of the battery and the lifespan of the light emitting diode as long as possible by repeatedly flashing the light emitting diode by flowing a high current instantaneously.

In order to achieve the above object, the present invention provides a safety jacket consisting of a waist belt and a shoulder hook, comprising: a battery attached to at least one of the waist belt and the shoulder hook; A low drop out regulator (LDO) for lowering and outputting a voltage of the battery; A microprocessor connected to the LDO and outputting a voltage at a predetermined frequency; A first transistor connected to the microprocessor and turned on by the voltage; A second transistor connected to the microprocessor and turned on by the voltage; A plurality of first light emitting diodes electrically connected between the LDO and the first transistor and installed on at least one of the waist belt and the shoulder hook portion; And a plurality of second light emitting diodes electrically connected between the LDO and the second transistor and installed on at least one of the waist belt and the shoulder hook.

The microprocessor may turn on the first transistor and the second transistor in turn so that the first light emitting diode and the second light emitting diode are turned on in turn.

The microprocessor may control the turn-on time of the first transistor and the second transistor to be 3 to 10 milliseconds for 1 second.

The LDO may allow a current higher than a rated current to flow through the first light emitting diode and the second light emitting diode.

At least one of the waist belt and the shoulder hook portion is a back cloth; A flexible circuit board bonded to the back cloth with an adhesive; A light emitting diode electrically connected to the flexible circuit board; And covering the flexible circuit board, the adhesive, and the light emitting diode, and made of transparent vinyl bonded to the back cloth.

As described above, the safety jacket having a light emitting diode according to the present invention includes a light emitting diode that emits light itself, so that the wearer can be clearly identified even in a dark place where there is no light at night.

In addition, the safety jacket having a light emitting diode according to the present invention by repeatedly flashing the light emitting diode by flowing a high current instantaneously, it is possible to maintain a long service life of the battery and the light emitting diode.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

1, a safety jacket with a light emitting diode according to the present invention is shown.

The safety jacket having a light emitting diode according to the present invention has a waist belt 11 and a shoulder strap portion 12 which is worn on both shoulders so that the waist belt 11 does not flow down, and the waist belt 11 and the shoulder strap portion ( A plurality of light emitting diodes 14 spaced at regular intervals throughout the region 12, a 9V battery 15 for supplying operating power to the light emitting diodes 14, the battery 15 and the light emitting diodes 14; The operation switch 16 for connecting or disconnecting the electrical connection between the) and the waist belt 11 or the shoulder portion 12 is made of a battery compartment 17 attached to the stitching.

In this case, the waist belt 11 maintains a state surrounded by the waist, and the Velcro tape 11a may be sewn on both ends to adjust the tightening degree appropriately to the waist circumference of the wearer. And the shoulder portion 12 is connected to both ends of the front and rear of the waist belt 11, respectively, and is formed in a shape that can be worn on both shoulders.

The operation switch 16 may be disposed anywhere, but in consideration of the convenience of operation, it may be disposed at a position where the hand can be easily reached.

The battery compartment 17 is a pocket with a lid to accommodate the battery 15 and to prevent the battery from being pulled out there.

Looking at the operation of the present invention configured as described above are as follows.

First, the shoulder straps 12 are worn on both shoulders, and the waist belt 11 is securely wrapped around the waist with Velcro tape 11a so as to feel some pressure on the waist.

On the other hand, when working at night in the worn state as described above, by operating the operation switch 16 to turn on.

Then, the operating power of the battery 15 is supplied to the light emitting diode 14, the light emitting diode 14 emits light.

At this time, there is no light in the surroundings, so that the wearer can be clearly identified even in a dark place, while the wearer can secure safety from dangers such as a traffic accident.

FIG. 2 is a cross-sectional view taken along the line 2-2 of FIG. 1. Although only the structure of the shoulder portion in Figure 2, but also the waist belt has the same structure.

As shown in FIG. 2, a back cloth 17, a flexible printed circuit board 19 bonded to the back cloth 17 with an adhesive 18, a light emitting diode electrically connected to the flexible printed circuit board 19, and Covering the flexible circuit board 19, the adhesive 18 and the light emitting diode 14, it comprises a transparent vinyl 20 bonded to the back cloth (17).

The back cloth 17 is easily folded as a soft general cloth. Of course, the back cloth 17 may be a resin material, not a cloth material.

The flexible circuit board 19 is a circuit board 19 that can be easily bent and adhered to the back cloth 17 with an adhesive 18. Of course, the flexible printed circuit board 19 may be attached to the back cloth 17 by sewing instead of the adhesive 18. In addition, a conductive pattern is formed on the flexible circuit board 19 so that the light emitting diodes 14 can be electrically connected. In addition, when it is difficult to form the flexible printed circuit board 19 long, a plurality of flexible printed circuit boards 19 may be connected to each other using a connector.

The light emitting diode 14 is surface mounted or penetrated through the flexible printed circuit board 19. The light emitting diode 14 is preferably a high brightness light emitting diode to increase the recognition rate.

The transparent vinyl 20 protects the flexible circuit board 19, the adhesive 18, and the light emitting diode 14 from the external environment, and at the same time, the light of the light emitting diode 14 is easily radiated to the outside. The transparent vinyl 20 may be attached or attached to the back cloth 17 by adhesive or sewing. In addition, the transparent vinyl 20 may be translucent and may be coated with a luminous material or a phosphor to increase the night or day recognition rate.

3 is a circuit diagram showing a driving circuit for driving a safety jacket having a light emitting diode according to the present invention.

The driving circuit of the safety jacket according to the present invention includes a battery (not shown), a low drop out regulator (LDO) U2, microprocessors U1 and U4, a first transistor Q1, and a second transistor. Q2, a plurality of first light emitting diodes CR1 and CR2, and a plurality of second light emitting diodes (not shown). In the following description, the circuit code is used instead of the reference numeral 14 of the light emitting diode.

The battery may be a disposable battery or a rechargeable rechargeable battery, but is not limited thereto. Here, the battery actually outputs a voltage of 9V.

The LDO U2 is connected to the battery and outputs the voltage of the battery lowered. Of course, the LDO (U2) is output by stabilizing the voltage. Here, the diode D1 may be connected between the battery and the LDO U2 to prevent the circuit from operating when the user combines the battery in the reverse direction. In addition, the capacitors C1, C2, and C4 connected to the LDO U2 prevent oscillation and stabilize the input voltage or the output voltage. In the drawing, the output terminal VCC connected to the LDO U2 becomes a power supply terminal for supplying power to the microprocessors U1 and U4 or the light emitting diodes CR1 and CR2 which will be described later.

The microprocessors U1 and U4 are connected to the LDO U2 and output a predetermined voltage (gate voltage) at a predetermined frequency. Here, the microprocessors U1 and U4 are provided with substantially two, which play the same role. Therefore, even if there is only one microprocessor, there is no problem in the operation disclosed in the present invention. However, in the present invention, the reason why the two microprocessors U1 and U4 are provided is to prepare for a case in which procurement for any one of the microprocessors is not performed smoothly. That is, the microprocessor adopted in the present invention is a microprocessor having different manufacturing companies and performing the same function. Even if procurement of one company is difficult, a microprocessor of another manufacturing company is adopted to quickly provide a driving circuit to the government. Can deliver.

The first transistor Q1 is connected to the microprocessors U1 and U4 and receives a predetermined voltage. That is, the first transistor Q1 is an N-channel power trench MOSFET, for example, and a gate terminal thereof is connected to the microprocessors U1 and U4. The drain terminal is grounded, and a plurality of first light emitting diodes CR1 and CR2 are connected in series between the source terminal and the power supply terminal VCC. The power supply terminal VCC is an output terminal VCC of the LDO U2. Here, the first light emitting diodes CR1 and CR2 are substantially installed in the shoulder strap 12 or the waistband 11 of the safety jacket.

The second transistor Q2 is also connected to the microprocessors U1 and U4 to receive a predetermined voltage. That is, the second transistor Q2 is an N-channel power trench MOSFET, for example, and a gate terminal thereof is connected to the microprocessors U1 and U4. The drain terminal is grounded, and a plurality of second light emitting diodes (not shown) are connected in series between the source terminal and the power supply terminal. The power supply terminal VCC is an output terminal VCC of the LDO U2. Here, the second light emitting diode is substantially installed in the shoulder strap 12 or the waistband 11 of the safety jacket.

As described above, a plurality of first light emitting diodes CR1 and CR2 are connected in series between the LDO U2 and the first transistor Q1, and at the same time, the waist belt 11 and the shoulder strap 12 are connected to each other. Is installed on. For example, the plurality of first light emitting diodes CR1 and CR2 may be installed in a row or multiple rows on the left side of the safety jacket.

In addition, as described above, a plurality of second light emitting diodes are connected in series between the LDO U2 and the second transistor Q2, and are installed in the waist belt 11 and the shoulder hanger 12. For example, the plurality of second light emitting diodes may be installed in a row or in a row on the right side of the safety jacket.

The microprocessors U1 and U4 sequentially turn on the first transistor Q1 and the second transistor Q2 so that the first light emitting diodes CR1 and CR2 and the second light emitting diode are turned on in turn. You can do that. For example, at some point in time, the microprocessors U1 and U4 may turn on the first light emitting diodes CR1 and CR2 installed on the left side of the safety jacket and turn off the second light emitting diodes installed on the right side of the safety jacket. . Subsequently, the microprocessors U1 and U4 may turn off the first light emitting diodes CR1 and CR2 installed on the left side of the safety jacket and turn on the second light emitting diodes installed on the right side of the safety jacket. In this manner, the first and second light emitting diodes respectively installed on the left and right sides of the safety jacket can emit light, thereby further increasing the recognition rate. However, since the first light emitting diode and the second light emitting diode have afterglow, the observer observing it is shown that the first light emitting diode and the second light emitting diode are turned on almost simultaneously.

Substantially, the microprocessors U1 and U4 control the turn-on time of the first transistor Q1 and the second transistor Q2 to be 3 to 10 milliseconds for 1 second. Therefore, the first light emitting diodes CR1 and CR2 and the second light emitting diode are turned on for 3 to 10 milliseconds for 1 second. More specifically, the plurality of first light emitting diodes CR1 and CR2 coupled to the left side of the safety jacket is turned on for about 3 to 10 milliseconds per second. The plurality of second light emitting diodes coupled to the right side of the safety jacket is then turned on for approximately 3-10 milliseconds during the next one second. In this manner, the first light emitting diode and the second light emitting diode continue to emit light repeatedly. However, as described above, the first light emitting diode and the second light emitting diode are seen to be turned on at about the same time because of the afterglow effect.

In addition, the LDO U2 allows a current higher than the rated current to flow through the first light emitting diodes CR1 and CR2 and the second light emitting diode. In fact, in the present invention, although the rated current of the first light emitting diodes CR1 and CR2 and the second light emitting diode is 20 mA or less, a current of approximately 150 mA is applied to the first light emitting diodes CR1 and CR2 and the second light emitting diode. It was made to flow. However, since the turn-on time of the first light emitting diodes CR1 and CR2 and the second light emitting diode is very short, approximately 3 to 10 milliseconds, the first light emitting diodes CR1 and CR2 and the second light emitting diode are not damaged. Did. Of course, since a very high current flows, the luminance of the light emitted from the first light emitting diode and the second light emitting diode is high, and due to the afterglow effect, the first light emitting diode and the second light emitting diode are turned on almost simultaneously. It became.

4A and 4B are waveform diagrams showing the relationship between the turn-on time and the battery voltage of the light emitting diode in the safety jacket with the light emitting diode according to the present invention.

First, as shown in FIG. 4A, when the turn-on time of the light emitting diode is set to about 7 milliseconds per second, the flashing efficiency reaches approximately 90%. In addition, since the turn-on time of the light emitting diode was only 7 milliseconds, the voltage drop of the battery occurred very small, and sufficient time was given to recover to the original similar voltage. Thus, there was little drop in the battery voltage at the next blink. By applying voltage and current to the light emitting diode in such a short time, the usable time of the battery becomes relatively long. In addition, since the light emitting diode is turned on for a short time, the lifespan of the light emitting diode is extended.

However, as shown in FIG. 4B, when the turn-on time of the light emitting diode is set to approximately 500 milliseconds per second, the flashing efficiency drops to approximately 50%. Further, since the turn-on time of the light emitting diode is 500 milliseconds, the voltage drop of the battery occurs relatively large, and also insufficient time to recover to the original similar voltage, so that the phenomenon of the drop of the battery voltage becomes larger at the next blink. By applying voltage and current to the light emitting diode for such a long time, the usable time of the battery is relatively short, and the life of the light emitting diode is also shortened.

What has been described above is only one embodiment for implementing a safety jacket having a light emitting diode according to the present invention, the present invention is not limited to the above embodiment, as claimed in the following claims Without departing from the gist of the present invention, those skilled in the art to which the present invention pertains to the technical spirit of the present invention to the extent that various modifications can be made.

1 is a perspective view showing a safety jacket with a light emitting diode according to the present invention.

FIG. 2 is a cross-sectional view taken along the line 2-2 of FIG. 1.

3 is a circuit diagram showing a driving circuit for driving a safety jacket having a light emitting diode according to the present invention.

4A and 4B are waveform diagrams showing the relationship between the turn-on time and the battery voltage of the light emitting diode in the safety jacket with the light emitting diode according to the present invention.

Claims (5)

In the safety jacket consisting of a waist belt and a shoulder hook, A battery attached to at least one of the waist belt and the shoulder hook; A low drop out regulator (LDO) for lowering and outputting a voltage of the battery; A microprocessor connected to the LDO and outputting a voltage at a predetermined frequency; A first transistor connected to the microprocessor and turned on by the voltage; A second transistor connected to the microprocessor and turned on by the voltage; A plurality of first light emitting diodes electrically connected between the LDO and the first transistor and installed on at least one of the waist belt and the shoulder hook portion; And, And a plurality of second light emitting diodes electrically connected between the LDO and the second transistor and installed on at least one of the waist belt and the shoulder hook. The method of claim 1, And the microprocessor turns on the first transistor and the second transistor in turn so that the first light emitting diode and the second light emitting diode are turned on in turn. The method of claim 1, And the microprocessor controls the turn-on time of the first transistor and the second transistor to be 3 to 10 milliseconds for 1 second. The method of claim 1, The LDO is a safety jacket having a light emitting diode, characterized in that for the first light emitting diode and the second light emitting diode to flow a current higher than the rated current. The method of claim 1, At least one of the waist belt and the shoulder hook portion Back cloth; A flexible circuit board bonded to the back cloth with an adhesive; A light emitting diode electrically connected to the flexible circuit board; And, A safety jacket having a light emitting diode covering the flexible circuit board, the adhesive and the light emitting diode, and comprising a transparent vinyl bonded to the back cloth.

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